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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label45_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:36:02,553 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:36:02,555 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:36:02,567 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:36:02,568 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:36:02,569 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:36:02,571 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:36:02,573 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:36:02,575 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:36:02,577 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:36:02,578 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:36:02,578 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:36:02,581 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:36:02,582 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:36:02,584 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:36:02,585 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:36:02,593 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:36:02,595 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:36:02,598 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:36:02,600 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:36:02,601 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:36:02,602 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:36:02,605 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 08:36:02,618 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 08:36:02,646 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:36:02,646 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:36:02,647 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:36:02,647 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:36:02,647 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:36:02,648 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:36:02,648 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:36:02,648 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:36:02,648 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:36:02,648 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:36:02,648 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:36:02,649 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:36:02,649 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:36:02,649 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:36:02,650 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:36:02,650 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:36:02,650 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:36:02,650 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:36:02,650 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:36:02,650 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:36:02,652 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:36:02,652 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:36:02,652 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:36:02,652 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:36:02,653 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:36:02,653 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:36:02,653 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:36:02,653 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:36:02,653 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:36:02,653 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:36:02,654 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:36:02,654 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:36:02,654 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:36:02,654 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:36:02,654 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:36:02,654 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:36:02,707 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:36:02,720 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:36:02,722 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:36:02,724 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:36:02,724 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:36:02,725 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label45_true-unreach-call.c [2018-10-27 08:36:02,781 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/25fc876f3/ecf3dcbb57fe4622b8c01bca2746f069/FLAGb20807187 [2018-10-27 08:36:03,427 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:36:03,428 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label45_true-unreach-call.c [2018-10-27 08:36:03,450 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/25fc876f3/ecf3dcbb57fe4622b8c01bca2746f069/FLAGb20807187 [2018-10-27 08:36:03,471 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/25fc876f3/ecf3dcbb57fe4622b8c01bca2746f069 [2018-10-27 08:36:03,483 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:36:03,487 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:36:03,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:36:03,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:36:03,494 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:36:03,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:36:03" (1/1) ... [2018-10-27 08:36:03,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5412784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:03, skipping insertion in model container [2018-10-27 08:36:03,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:36:03" (1/1) ... [2018-10-27 08:36:03,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:36:03,639 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:36:04,637 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:36:04,641 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:36:05,106 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:36:05,130 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:36:05,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:05 WrapperNode [2018-10-27 08:36:05,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:36:05,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:36:05,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:36:05,132 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:36:05,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:05" (1/1) ... [2018-10-27 08:36:05,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:05" (1/1) ... [2018-10-27 08:36:05,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:36:05,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:36:05,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:36:05,640 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:36:05,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:05" (1/1) ... [2018-10-27 08:36:05,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:05" (1/1) ... [2018-10-27 08:36:05,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:05" (1/1) ... [2018-10-27 08:36:05,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:05" (1/1) ... [2018-10-27 08:36:05,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:05" (1/1) ... [2018-10-27 08:36:05,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:05" (1/1) ... [2018-10-27 08:36:05,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:05" (1/1) ... [2018-10-27 08:36:05,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:36:05,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:36:05,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:36:05,947 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:36:05,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:36:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:36:06,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:36:06,021 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:36:06,021 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:36:06,021 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:36:06,021 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:36:06,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:36:06,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:36:06,022 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:36:06,022 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:36:22,250 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:36:22,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:36:22 BoogieIcfgContainer [2018-10-27 08:36:22,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:36:22,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:36:22,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:36:22,256 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:36:22,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:36:03" (1/3) ... [2018-10-27 08:36:22,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1961139a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:36:22, skipping insertion in model container [2018-10-27 08:36:22,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:36:05" (2/3) ... [2018-10-27 08:36:22,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1961139a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:36:22, skipping insertion in model container [2018-10-27 08:36:22,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:36:22" (3/3) ... [2018-10-27 08:36:22,260 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label45_true-unreach-call.c [2018-10-27 08:36:22,272 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:36:22,282 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:36:22,301 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:36:22,345 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:36:22,345 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:36:22,345 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:36:22,345 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:36:22,345 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:36:22,346 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:36:22,346 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:36:22,346 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:36:22,381 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-27 08:36:22,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-27 08:36:22,391 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:36:22,392 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] [2018-10-27 08:36:22,395 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:36:22,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:36:22,401 INFO L82 PathProgramCache]: Analyzing trace with hash 363269502, now seen corresponding path program 1 times [2018-10-27 08:36:22,404 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:36:22,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:36:22,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:36:22,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:36:22,466 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:36:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:36:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:36:22,989 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:36:22,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:36:22,990 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:36:22,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:36:23,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:36:23,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:36:23,016 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-27 08:36:33,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:36:33,165 INFO L93 Difference]: Finished difference Result 2166 states and 4013 transitions. [2018-10-27 08:36:33,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:36:33,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-10-27 08:36:33,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:36:33,221 INFO L225 Difference]: With dead ends: 2166 [2018-10-27 08:36:33,222 INFO L226 Difference]: Without dead ends: 1556 [2018-10-27 08:36:33,234 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 [2018-10-27 08:36:33,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2018-10-27 08:36:33,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1068. [2018-10-27 08:36:33,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-10-27 08:36:33,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1850 transitions. [2018-10-27 08:36:33,365 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1850 transitions. Word has length 57 [2018-10-27 08:36:33,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:36:33,366 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1850 transitions. [2018-10-27 08:36:33,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:36:33,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1850 transitions. [2018-10-27 08:36:33,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-27 08:36:33,375 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:36:33,375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:36:33,376 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:36:33,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:36:33,377 INFO L82 PathProgramCache]: Analyzing trace with hash 448805847, now seen corresponding path program 1 times [2018-10-27 08:36:33,377 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:36:33,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:36:33,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:36:33,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:36:33,380 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:36:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:36:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:36:33,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:36:33,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:36:33,691 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:36:33,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:36:33,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:36:33,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:36:33,693 INFO L87 Difference]: Start difference. First operand 1068 states and 1850 transitions. Second operand 6 states. [2018-10-27 08:36:42,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:36:42,411 INFO L93 Difference]: Finished difference Result 3059 states and 5419 transitions. [2018-10-27 08:36:42,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:36:42,418 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-10-27 08:36:42,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:36:42,435 INFO L225 Difference]: With dead ends: 3059 [2018-10-27 08:36:42,436 INFO L226 Difference]: Without dead ends: 1997 [2018-10-27 08:36:42,441 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 [2018-10-27 08:36:42,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2018-10-27 08:36:42,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1975. [2018-10-27 08:36:42,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2018-10-27 08:36:42,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3181 transitions. [2018-10-27 08:36:42,536 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3181 transitions. Word has length 133 [2018-10-27 08:36:42,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:36:42,537 INFO L481 AbstractCegarLoop]: Abstraction has 1975 states and 3181 transitions. [2018-10-27 08:36:42,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:36:42,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3181 transitions. [2018-10-27 08:36:42,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-27 08:36:42,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:36:42,542 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:36:42,542 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:36:42,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:36:42,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1245309791, now seen corresponding path program 1 times [2018-10-27 08:36:42,543 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:36:42,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:36:42,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:36:42,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:36:42,545 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:36:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:36:42,872 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:36:42,907 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:36:42,908 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:36:42,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:36:42,908 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:36:42,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:36:42,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:36:42,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:36:42,909 INFO L87 Difference]: Start difference. First operand 1975 states and 3181 transitions. Second operand 6 states. [2018-10-27 08:36:50,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:36:50,796 INFO L93 Difference]: Finished difference Result 4880 states and 7834 transitions. [2018-10-27 08:36:50,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:36:50,800 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-10-27 08:36:50,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:36:50,823 INFO L225 Difference]: With dead ends: 4880 [2018-10-27 08:36:50,824 INFO L226 Difference]: Without dead ends: 2911 [2018-10-27 08:36:50,832 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 [2018-10-27 08:36:50,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2018-10-27 08:36:50,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2880. [2018-10-27 08:36:50,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-10-27 08:36:50,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3936 transitions. [2018-10-27 08:36:50,930 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3936 transitions. Word has length 137 [2018-10-27 08:36:50,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:36:50,931 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states and 3936 transitions. [2018-10-27 08:36:50,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:36:50,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3936 transitions. [2018-10-27 08:36:50,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-27 08:36:50,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:36:50,936 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:36:50,937 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:36:50,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:36:50,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1452513378, now seen corresponding path program 1 times [2018-10-27 08:36:50,937 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:36:50,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:36:50,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:36:50,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:36:50,939 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:36:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:36:51,198 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:36:51,198 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:36:51,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:36:51,198 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:36:51,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:36:51,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:36:51,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:36:51,200 INFO L87 Difference]: Start difference. First operand 2880 states and 3936 transitions. Second operand 4 states. [2018-10-27 08:37:04,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:37:04,518 INFO L93 Difference]: Finished difference Result 6629 states and 9248 transitions. [2018-10-27 08:37:04,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:37:04,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2018-10-27 08:37:04,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:37:04,540 INFO L225 Difference]: With dead ends: 6629 [2018-10-27 08:37:04,540 INFO L226 Difference]: Without dead ends: 3755 [2018-10-27 08:37:04,552 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 [2018-10-27 08:37:04,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3755 states. [2018-10-27 08:37:04,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3755 to 3755. [2018-10-27 08:37:04,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3755 states. [2018-10-27 08:37:04,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5086 transitions. [2018-10-27 08:37:04,638 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5086 transitions. Word has length 167 [2018-10-27 08:37:04,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:37:04,639 INFO L481 AbstractCegarLoop]: Abstraction has 3755 states and 5086 transitions. [2018-10-27 08:37:04,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:37:04,640 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5086 transitions. [2018-10-27 08:37:04,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-27 08:37:04,643 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:37:04,644 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, 2, 2, 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] [2018-10-27 08:37:04,644 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:37:04,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:37:04,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1272782136, now seen corresponding path program 1 times [2018-10-27 08:37:04,645 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:37:04,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:37:04,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:37:04,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:37:04,646 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:37:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:37:04,911 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-27 08:37:04,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:37:04,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 08:37:04,912 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:37:04,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:37:04,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:37:04,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:37:04,913 INFO L87 Difference]: Start difference. First operand 3755 states and 5086 transitions. Second operand 3 states. [2018-10-27 08:37:13,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:37:13,277 INFO L93 Difference]: Finished difference Result 10149 states and 13801 transitions. [2018-10-27 08:37:13,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:37:13,288 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2018-10-27 08:37:13,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:37:13,316 INFO L225 Difference]: With dead ends: 10149 [2018-10-27 08:37:13,317 INFO L226 Difference]: Without dead ends: 6400 [2018-10-27 08:37:13,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:37:13,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6400 states. [2018-10-27 08:37:13,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6400 to 6400. [2018-10-27 08:37:13,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6400 states. [2018-10-27 08:37:13,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6400 states to 6400 states and 8052 transitions. [2018-10-27 08:37:13,486 INFO L78 Accepts]: Start accepts. Automaton has 6400 states and 8052 transitions. Word has length 221 [2018-10-27 08:37:13,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:37:13,486 INFO L481 AbstractCegarLoop]: Abstraction has 6400 states and 8052 transitions. [2018-10-27 08:37:13,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:37:13,487 INFO L276 IsEmpty]: Start isEmpty. Operand 6400 states and 8052 transitions. [2018-10-27 08:37:13,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-27 08:37:13,493 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:37:13,493 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, 2, 2, 2, 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] [2018-10-27 08:37:13,494 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:37:13,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:37:13,494 INFO L82 PathProgramCache]: Analyzing trace with hash -998255095, now seen corresponding path program 1 times [2018-10-27 08:37:13,494 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:37:13,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:37:13,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:37:13,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:37:13,495 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:37:13,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:37:14,202 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 100 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:37:14,203 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:37:14,203 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:37:14,204 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 245 with the following transitions: [2018-10-27 08:37:14,205 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1066], [1068], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1231], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:37:14,254 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:37:14,255 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:37:15,037 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:37:15,040 INFO L272 AbstractInterpreter]: Visited 115 different actions 115 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 08:37:15,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:37:15,082 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:37:15,863 INFO L227 lantSequenceWeakener]: Weakened 235 states. On average, predicates are now at 75.66% of their original sizes. [2018-10-27 08:37:15,863 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:37:16,094 INFO L415 sIntCurrentIteration]: We unified 243 AI predicates to 243 [2018-10-27 08:37:16,094 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:37:16,098 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:37:16,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 08:37:16,098 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:37:16,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:37:16,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:37:16,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:37:16,100 INFO L87 Difference]: Start difference. First operand 6400 states and 8052 transitions. Second operand 6 states. [2018-10-27 08:38:04,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:38:04,498 INFO L93 Difference]: Finished difference Result 13230 states and 16564 transitions. [2018-10-27 08:38:04,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:38:04,498 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 244 [2018-10-27 08:38:04,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:38:04,520 INFO L225 Difference]: With dead ends: 13230 [2018-10-27 08:38:04,521 INFO L226 Difference]: Without dead ends: 6836 [2018-10-27 08:38:04,535 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 244 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 08:38:04,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6836 states. [2018-10-27 08:38:04,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6836 to 6834. [2018-10-27 08:38:04,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6834 states. [2018-10-27 08:38:04,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6834 states to 6834 states and 8497 transitions. [2018-10-27 08:38:04,667 INFO L78 Accepts]: Start accepts. Automaton has 6834 states and 8497 transitions. Word has length 244 [2018-10-27 08:38:04,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:38:04,668 INFO L481 AbstractCegarLoop]: Abstraction has 6834 states and 8497 transitions. [2018-10-27 08:38:04,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:38:04,668 INFO L276 IsEmpty]: Start isEmpty. Operand 6834 states and 8497 transitions. [2018-10-27 08:38:04,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-10-27 08:38:04,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:38:04,676 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:38:04,676 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:38:04,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:38:04,677 INFO L82 PathProgramCache]: Analyzing trace with hash 248035201, now seen corresponding path program 1 times [2018-10-27 08:38:04,677 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:38:04,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:38:04,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:38:04,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:38:04,678 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:38:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:38:05,082 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-27 08:38:05,082 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:38:05,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:38:05,083 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:38:05,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:38:05,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:38:05,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:38:05,084 INFO L87 Difference]: Start difference. First operand 6834 states and 8497 transitions. Second operand 4 states. [2018-10-27 08:38:16,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:38:16,300 INFO L93 Difference]: Finished difference Result 16800 states and 21272 transitions. [2018-10-27 08:38:16,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:38:16,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 287 [2018-10-27 08:38:16,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:38:16,334 INFO L225 Difference]: With dead ends: 16800 [2018-10-27 08:38:16,334 INFO L226 Difference]: Without dead ends: 10406 [2018-10-27 08:38:16,356 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:38:16,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10406 states. [2018-10-27 08:38:16,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10406 to 10389. [2018-10-27 08:38:16,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10389 states. [2018-10-27 08:38:16,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10389 states to 10389 states and 12671 transitions. [2018-10-27 08:38:16,552 INFO L78 Accepts]: Start accepts. Automaton has 10389 states and 12671 transitions. Word has length 287 [2018-10-27 08:38:16,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:38:16,553 INFO L481 AbstractCegarLoop]: Abstraction has 10389 states and 12671 transitions. [2018-10-27 08:38:16,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:38:16,553 INFO L276 IsEmpty]: Start isEmpty. Operand 10389 states and 12671 transitions. [2018-10-27 08:38:16,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-10-27 08:38:16,564 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:38:16,564 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:38:16,565 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:38:16,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:38:16,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1889614879, now seen corresponding path program 1 times [2018-10-27 08:38:16,565 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:38:16,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:38:16,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:38:16,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:38:16,566 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:38:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:38:17,031 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 160 proven. 142 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-27 08:38:17,031 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:38:17,031 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:38:17,032 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 297 with the following transitions: [2018-10-27 08:38:17,032 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1066], [1068], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1227], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:38:17,037 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:38:17,037 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:38:18,184 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:38:18,184 INFO L272 AbstractInterpreter]: Visited 98 different actions 294 times. Merged at 8 different actions 23 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-27 08:38:18,190 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:38:18,191 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:38:18,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:38:18,191 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:38:18,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:38:18,201 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:38:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:38:18,333 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:38:18,751 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-10-27 08:38:19,246 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 254 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-10-27 08:38:19,247 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:38:20,315 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2018-10-27 08:38:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 160 proven. 211 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:38:20,943 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:38:20,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 16 [2018-10-27 08:38:20,944 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:38:20,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:38:20,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:38:20,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2018-10-27 08:38:20,948 INFO L87 Difference]: Start difference. First operand 10389 states and 12671 transitions. Second operand 10 states. Received shutdown request... [2018-10-27 08:40:11,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 08:40:11,215 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 08:40:11,220 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 08:40:11,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:40:11 BoogieIcfgContainer [2018-10-27 08:40:11,221 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 08:40:11,222 INFO L168 Benchmark]: Toolchain (without parser) took 247737.62 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 737.8 MB. Max. memory is 7.1 GB. [2018-10-27 08:40:11,223 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 08:40:11,223 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1643.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-27 08:40:11,224 INFO L168 Benchmark]: Boogie Procedure Inliner took 507.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -901.7 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-27 08:40:11,225 INFO L168 Benchmark]: Boogie Preprocessor took 307.05 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 42.6 MB). Peak memory consumption was 42.6 MB. Max. memory is 7.1 GB. [2018-10-27 08:40:11,226 INFO L168 Benchmark]: RCFGBuilder took 16304.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 457.7 MB). Peak memory consumption was 457.7 MB. Max. memory is 7.1 GB. [2018-10-27 08:40:11,227 INFO L168 Benchmark]: TraceAbstraction took 228968.90 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 3.2 GB in the end (delta: -1.6 GB). Peak memory consumption was 249.0 MB. Max. memory is 7.1 GB. [2018-10-27 08:40:11,232 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 1643.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 507.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -901.7 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 307.05 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 42.6 MB). Peak memory consumption was 42.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16304.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 457.7 MB). Peak memory consumption was 457.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228968.90 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 3.2 GB in the end (delta: -1.6 GB). Peak memory consumption was 249.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 158]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 158). Cancelled while BasicCegarLoop was constructing difference of abstraction (10389states) and FLOYD_HOARE automaton (currently 15 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (10977 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 228.8s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 218.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3909 SDtfs, 11048 SDslu, 2091 SDs, 0 SdLazy, 21965 SolverSat, 3922 SolverUnsat, 48 SolverUnknown, 0 SolverNotchecked, 197.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 898 GetRequests, 847 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10389occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.0s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9978820681316658 AbsIntWeakeningRatio, 0.1111111111111111 AbsIntAvgWeakeningVarsNumRemoved, 17.42798353909465 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 560 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 1838 NumberOfCodeBlocks, 1838 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2124 ConstructedInterpolants, 93 QuantifiedInterpolants, 2319895 SizeOfPredicates, 2 NumberOfNonLiveVariables, 529 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 1392/1819 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown