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/Problem11_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:27:06,658 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:27:06,660 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:27:06,672 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:27:06,673 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:27:06,674 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:27:06,675 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:27:06,677 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:27:06,678 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:27:06,679 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:27:06,680 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:27:06,680 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:27:06,681 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:27:06,682 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:27:06,683 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:27:06,684 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:27:06,685 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:27:06,687 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:27:06,689 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:27:06,690 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:27:06,691 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:27:06,693 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:27:06,695 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 01:27:06,704 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 [2018-10-25 01:27:06,719 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:27:06,720 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:27:06,721 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:27:06,721 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:27:06,721 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:27:06,721 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:27:06,721 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:27:06,722 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:27:06,722 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:27:06,722 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:27:06,722 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:27:06,722 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:27:06,722 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:27:06,723 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:27:06,723 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:27:06,724 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:27:06,724 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:27:06,724 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:27:06,724 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:27:06,724 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:27:06,724 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:27:06,725 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:27:06,725 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:27:06,725 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:27:06,725 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:27:06,725 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:27:06,726 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:27:06,726 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:27:06,726 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:27:06,726 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:27:06,726 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:27:06,727 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:27:06,727 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:27:06,727 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:27:06,727 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:27:06,727 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:27:06,783 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:27:06,802 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:27:06,806 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:27:06,808 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:27:06,808 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:27:06,809 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label10_true-unreach-call.c [2018-10-25 01:27:06,881 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f5333ad27/75634776b343440a8eeeab13424a01b4/FLAG6c2a3e937 [2018-10-25 01:27:07,542 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:27:07,543 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label10_true-unreach-call.c [2018-10-25 01:27:07,569 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f5333ad27/75634776b343440a8eeeab13424a01b4/FLAG6c2a3e937 [2018-10-25 01:27:07,584 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f5333ad27/75634776b343440a8eeeab13424a01b4 [2018-10-25 01:27:07,595 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:27:07,597 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:27:07,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:27:07,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:27:07,603 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:27:07,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:27:07" (1/1) ... [2018-10-25 01:27:07,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c237445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:07, skipping insertion in model container [2018-10-25 01:27:07,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:27:07" (1/1) ... [2018-10-25 01:27:07,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:27:07,686 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:27:08,262 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:27:08,267 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:27:08,432 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:27:08,450 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:27:08,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:08 WrapperNode [2018-10-25 01:27:08,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:27:08,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:27:08,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:27:08,452 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:27:08,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:08" (1/1) ... [2018-10-25 01:27:08,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:08" (1/1) ... [2018-10-25 01:27:08,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:27:08,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:27:08,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:27:08,734 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:27:08,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:08" (1/1) ... [2018-10-25 01:27:08,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:08" (1/1) ... [2018-10-25 01:27:08,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:08" (1/1) ... [2018-10-25 01:27:08,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:08" (1/1) ... [2018-10-25 01:27:08,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:08" (1/1) ... [2018-10-25 01:27:08,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:08" (1/1) ... [2018-10-25 01:27:08,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:08" (1/1) ... [2018-10-25 01:27:08,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:27:08,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:27:08,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:27:08,872 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:27:08,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:08" (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 [2018-10-25 01:27:08,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:27:08,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:27:08,938 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:27:08,938 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:27:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:27:08,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:27:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:27:08,939 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:27:13,967 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:27:13,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:27:13 BoogieIcfgContainer [2018-10-25 01:27:13,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:27:13,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:27:13,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:27:13,978 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:27:13,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:27:07" (1/3) ... [2018-10-25 01:27:13,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e46e9ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:27:13, skipping insertion in model container [2018-10-25 01:27:13,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:27:08" (2/3) ... [2018-10-25 01:27:13,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e46e9ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:27:13, skipping insertion in model container [2018-10-25 01:27:13,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:27:13" (3/3) ... [2018-10-25 01:27:13,982 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label10_true-unreach-call.c [2018-10-25 01:27:13,993 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:27:14,004 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:27:14,025 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:27:14,084 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:27:14,085 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:27:14,085 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:27:14,085 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:27:14,085 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:27:14,085 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:27:14,085 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:27:14,086 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:27:14,116 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-25 01:27:14,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-25 01:27:14,124 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:27:14,125 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] [2018-10-25 01:27:14,128 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:27:14,135 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:27:14,135 INFO L82 PathProgramCache]: Analyzing trace with hash -250768471, now seen corresponding path program 1 times [2018-10-25 01:27:14,138 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:27:14,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:14,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:27:14,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:14,188 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:27:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:27:14,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:27:14,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:27:14,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:27:14,575 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:27:14,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:27:14,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:27:14,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:27:14,603 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-25 01:27:18,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:27:18,301 INFO L93 Difference]: Finished difference Result 1001 states and 1780 transitions. [2018-10-25 01:27:18,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:27:18,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-10-25 01:27:18,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:27:18,332 INFO L225 Difference]: With dead ends: 1001 [2018-10-25 01:27:18,333 INFO L226 Difference]: Without dead ends: 702 [2018-10-25 01:27:18,343 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 [2018-10-25 01:27:18,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2018-10-25 01:27:18,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 699. [2018-10-25 01:27:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2018-10-25 01:27:18,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1082 transitions. [2018-10-25 01:27:18,441 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1082 transitions. Word has length 29 [2018-10-25 01:27:18,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:27:18,442 INFO L481 AbstractCegarLoop]: Abstraction has 699 states and 1082 transitions. [2018-10-25 01:27:18,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:27:18,442 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1082 transitions. [2018-10-25 01:27:18,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-25 01:27:18,448 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:27:18,449 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:27:18,449 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:27:18,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:27:18,450 INFO L82 PathProgramCache]: Analyzing trace with hash -2105116581, now seen corresponding path program 1 times [2018-10-25 01:27:18,450 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:27:18,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:18,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:27:18,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:18,452 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:27:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:27:18,842 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:27:18,843 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:27:18,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:27:18,843 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:27:18,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:27:18,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:27:18,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:27:18,846 INFO L87 Difference]: Start difference. First operand 699 states and 1082 transitions. Second operand 6 states. [2018-10-25 01:27:23,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:27:23,930 INFO L93 Difference]: Finished difference Result 2534 states and 4100 transitions. [2018-10-25 01:27:23,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:27:23,931 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-10-25 01:27:23,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:27:23,947 INFO L225 Difference]: With dead ends: 2534 [2018-10-25 01:27:23,948 INFO L226 Difference]: Without dead ends: 1841 [2018-10-25 01:27:23,955 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 [2018-10-25 01:27:23,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2018-10-25 01:27:24,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1815. [2018-10-25 01:27:24,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1815 states. [2018-10-25 01:27:24,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2683 transitions. [2018-10-25 01:27:24,064 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2683 transitions. Word has length 102 [2018-10-25 01:27:24,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:27:24,065 INFO L481 AbstractCegarLoop]: Abstraction has 1815 states and 2683 transitions. [2018-10-25 01:27:24,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:27:24,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2683 transitions. [2018-10-25 01:27:24,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-25 01:27:24,069 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:27:24,069 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:27:24,069 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:27:24,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:27:24,070 INFO L82 PathProgramCache]: Analyzing trace with hash 367698756, now seen corresponding path program 1 times [2018-10-25 01:27:24,070 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:27:24,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:24,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:27:24,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:24,071 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:27:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:27:24,232 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:27:24,233 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:27:24,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:27:24,233 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:27:24,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:27:24,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:27:24,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:27:24,234 INFO L87 Difference]: Start difference. First operand 1815 states and 2683 transitions. Second operand 4 states. [2018-10-25 01:27:26,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:27:26,836 INFO L93 Difference]: Finished difference Result 4796 states and 7372 transitions. [2018-10-25 01:27:26,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:27:26,840 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2018-10-25 01:27:26,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:27:26,865 INFO L225 Difference]: With dead ends: 4796 [2018-10-25 01:27:26,865 INFO L226 Difference]: Without dead ends: 2987 [2018-10-25 01:27:26,880 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 [2018-10-25 01:27:26,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2018-10-25 01:27:26,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 2970. [2018-10-25 01:27:26,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2970 states. [2018-10-25 01:27:26,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 4362 transitions. [2018-10-25 01:27:26,991 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 4362 transitions. Word has length 103 [2018-10-25 01:27:26,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:27:26,992 INFO L481 AbstractCegarLoop]: Abstraction has 2970 states and 4362 transitions. [2018-10-25 01:27:26,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:27:26,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 4362 transitions. [2018-10-25 01:27:27,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-25 01:27:27,003 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:27:27,004 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:27:27,007 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:27:27,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:27:27,007 INFO L82 PathProgramCache]: Analyzing trace with hash -537163217, now seen corresponding path program 1 times [2018-10-25 01:27:27,007 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:27:27,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:27,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:27:27,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:27,009 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:27:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:27:27,555 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:27:27,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:27:27,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:27:27,556 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:27:27,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:27:27,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:27:27,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:27:27,559 INFO L87 Difference]: Start difference. First operand 2970 states and 4362 transitions. Second operand 6 states. [2018-10-25 01:27:31,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:27:31,677 INFO L93 Difference]: Finished difference Result 11412 states and 20997 transitions. [2018-10-25 01:27:31,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-25 01:27:31,678 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-10-25 01:27:31,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:27:31,769 INFO L225 Difference]: With dead ends: 11412 [2018-10-25 01:27:31,770 INFO L226 Difference]: Without dead ends: 8448 [2018-10-25 01:27:31,850 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-25 01:27:31,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8448 states. [2018-10-25 01:27:32,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8448 to 7652. [2018-10-25 01:27:32,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7652 states. [2018-10-25 01:27:32,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7652 states to 7652 states and 11186 transitions. [2018-10-25 01:27:32,213 INFO L78 Accepts]: Start accepts. Automaton has 7652 states and 11186 transitions. Word has length 128 [2018-10-25 01:27:32,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:27:32,214 INFO L481 AbstractCegarLoop]: Abstraction has 7652 states and 11186 transitions. [2018-10-25 01:27:32,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:27:32,214 INFO L276 IsEmpty]: Start isEmpty. Operand 7652 states and 11186 transitions. [2018-10-25 01:27:32,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-25 01:27:32,222 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:27:32,223 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:27:32,223 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:27:32,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:27:32,224 INFO L82 PathProgramCache]: Analyzing trace with hash -388558922, now seen corresponding path program 1 times [2018-10-25 01:27:32,224 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:27:32,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:32,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:27:32,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:27:32,225 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:27:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:27:32,760 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:27:32,760 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:27:32,761 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:27:32,762 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 177 with the following transitions: [2018-10-25 01:27:32,765 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [502], [503], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:27:32,825 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:27:32,826 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:27:33,290 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:27:33,291 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-25 01:27:33,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:27:33,335 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:27:33,844 INFO L232 lantSequenceWeakener]: Weakened 167 states. On average, predicates are now at 73.2% of their original sizes. [2018-10-25 01:27:33,844 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:27:33,936 INFO L413 sIntCurrentIteration]: We have 175 unified AI predicates [2018-10-25 01:27:33,937 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:27:33,938 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:27:33,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-25 01:27:33,938 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:27:33,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:27:33,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:27:33,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:27:33,939 INFO L87 Difference]: Start difference. First operand 7652 states and 11186 transitions. Second operand 6 states. [2018-10-25 01:28:56,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:28:56,828 INFO L93 Difference]: Finished difference Result 15490 states and 22585 transitions. [2018-10-25 01:28:56,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:28:56,828 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2018-10-25 01:28:56,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:28:56,875 INFO L225 Difference]: With dead ends: 15490 [2018-10-25 01:28:56,876 INFO L226 Difference]: Without dead ends: 7844 [2018-10-25 01:28:56,902 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:28:56,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7844 states. [2018-10-25 01:28:57,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7844 to 7842. [2018-10-25 01:28:57,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7842 states. [2018-10-25 01:28:57,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7842 states to 7842 states and 11387 transitions. [2018-10-25 01:28:57,145 INFO L78 Accepts]: Start accepts. Automaton has 7842 states and 11387 transitions. Word has length 176 [2018-10-25 01:28:57,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:28:57,146 INFO L481 AbstractCegarLoop]: Abstraction has 7842 states and 11387 transitions. [2018-10-25 01:28:57,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:28:57,146 INFO L276 IsEmpty]: Start isEmpty. Operand 7842 states and 11387 transitions. [2018-10-25 01:28:57,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-25 01:28:57,155 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:28:57,155 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:28:57,155 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:28:57,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:28:57,156 INFO L82 PathProgramCache]: Analyzing trace with hash 987927268, now seen corresponding path program 1 times [2018-10-25 01:28:57,156 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:28:57,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:28:57,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:28:57,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:28:57,158 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:28:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:28:57,702 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:28:57,702 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:28:57,702 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:28:57,703 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 234 with the following transitions: [2018-10-25 01:28:57,703 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [502], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:28:57,710 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:28:57,710 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:28:58,198 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:28:58,198 INFO L272 AbstractInterpreter]: Visited 141 different actions 409 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-25 01:28:58,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:28:58,214 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:28:58,214 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:28:58,214 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 [2018-10-25 01:28:58,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:28:58,225 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:28:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:28:58,325 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:28:58,747 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:28:58,748 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:28:59,304 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:28:59,327 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:28:59,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-25 01:28:59,327 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:28:59,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 01:28:59,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 01:28:59,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-25 01:28:59,334 INFO L87 Difference]: Start difference. First operand 7842 states and 11387 transitions. Second operand 9 states. [2018-10-25 01:29:09,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:29:09,219 INFO L93 Difference]: Finished difference Result 21971 states and 42575 transitions. [2018-10-25 01:29:09,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-25 01:29:09,219 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 233 [2018-10-25 01:29:09,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:29:09,362 INFO L225 Difference]: With dead ends: 21971 [2018-10-25 01:29:09,362 INFO L226 Difference]: Without dead ends: 14325 [2018-10-25 01:29:09,515 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 469 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-10-25 01:29:09,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14325 states. [2018-10-25 01:29:10,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14325 to 14166. [2018-10-25 01:29:10,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14166 states. [2018-10-25 01:29:10,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14166 states to 14166 states and 24886 transitions. [2018-10-25 01:29:10,346 INFO L78 Accepts]: Start accepts. Automaton has 14166 states and 24886 transitions. Word has length 233 [2018-10-25 01:29:10,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:29:10,347 INFO L481 AbstractCegarLoop]: Abstraction has 14166 states and 24886 transitions. [2018-10-25 01:29:10,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 01:29:10,347 INFO L276 IsEmpty]: Start isEmpty. Operand 14166 states and 24886 transitions. [2018-10-25 01:29:10,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-25 01:29:10,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:29:10,358 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:29:10,358 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:29:10,359 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:29:10,359 INFO L82 PathProgramCache]: Analyzing trace with hash 877957787, now seen corresponding path program 1 times [2018-10-25 01:29:10,359 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:29:10,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:29:10,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:29:10,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:29:10,360 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:29:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:29:10,927 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 4 proven. 47 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-10-25 01:29:10,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:29:10,928 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:29:10,928 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-10-25 01:29:10,929 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:29:10,936 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:29:10,936 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:29:11,992 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:29:11,993 INFO L272 AbstractInterpreter]: Visited 136 different actions 404 times. Merged at 7 different actions 20 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-25 01:29:12,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:29:12,031 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:29:12,031 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:29:12,031 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:29:12,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:29:12,050 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:29:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:29:12,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:29:13,165 WARN L179 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 20 [2018-10-25 01:29:13,853 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 45 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:29:13,853 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:29:14,113 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2018-10-25 01:29:14,681 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-25 01:29:14,830 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-25 01:29:15,360 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 45 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:29:15,383 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:29:15,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2018-10-25 01:29:15,384 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:29:15,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-25 01:29:15,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-25 01:29:15,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2018-10-25 01:29:15,385 INFO L87 Difference]: Start difference. First operand 14166 states and 24886 transitions. Second operand 15 states. [2018-10-25 01:29:15,796 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 19 [2018-10-25 01:29:16,708 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2018-10-25 01:29:19,614 WARN L179 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2018-10-25 01:29:21,712 WARN L179 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2018-10-25 01:29:22,747 WARN L179 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2018-10-25 01:29:23,853 WARN L179 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2018-10-25 01:29:25,642 WARN L179 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2018-10-25 01:29:28,963 WARN L179 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2018-10-25 01:29:31,008 WARN L179 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2018-10-25 01:29:35,958 WARN L179 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2018-10-25 01:29:37,906 WARN L179 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2018-10-25 01:29:40,806 WARN L179 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-10-25 01:29:47,241 WARN L179 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 27 [2018-10-25 01:29:50,951 WARN L179 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-25 01:29:54,033 WARN L179 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2018-10-25 01:29:55,330 WARN L179 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 11 [2018-10-25 01:30:10,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:30:10,807 INFO L93 Difference]: Finished difference Result 48774 states and 95149 transitions. [2018-10-25 01:30:10,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-10-25 01:30:10,808 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 251 [2018-10-25 01:30:10,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:30:11,159 INFO L225 Difference]: With dead ends: 48774 [2018-10-25 01:30:11,159 INFO L226 Difference]: Without dead ends: 34480 [2018-10-25 01:30:11,310 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 495 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9407 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=2748, Invalid=21432, Unknown=0, NotChecked=0, Total=24180 [2018-10-25 01:30:11,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34480 states. [2018-10-25 01:30:12,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34480 to 34157. [2018-10-25 01:30:12,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34157 states. [2018-10-25 01:30:13,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34157 states to 34157 states and 62093 transitions. [2018-10-25 01:30:13,133 INFO L78 Accepts]: Start accepts. Automaton has 34157 states and 62093 transitions. Word has length 251 [2018-10-25 01:30:13,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:30:13,134 INFO L481 AbstractCegarLoop]: Abstraction has 34157 states and 62093 transitions. [2018-10-25 01:30:13,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-25 01:30:13,134 INFO L276 IsEmpty]: Start isEmpty. Operand 34157 states and 62093 transitions. [2018-10-25 01:30:13,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-25 01:30:13,143 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:30:13,143 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:30:13,144 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:30:13,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:13,144 INFO L82 PathProgramCache]: Analyzing trace with hash 875315048, now seen corresponding path program 1 times [2018-10-25 01:30:13,144 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:30:13,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:13,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:30:13,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:13,146 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:30:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:30:13,486 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 45 proven. 6 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-25 01:30:13,486 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:30:13,486 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:30:13,487 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-10-25 01:30:13,487 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [574], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:30:13,492 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:30:13,493 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:30:14,164 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:30:14,164 INFO L272 AbstractInterpreter]: Visited 141 different actions 560 times. Merged at 7 different actions 30 times. Widened at 1 different actions 3 times. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-25 01:30:14,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:14,205 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:30:14,205 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:30:14,206 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:30:14,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:30:14,220 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:30:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:30:14,307 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:30:14,408 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:30:14,408 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:30:14,532 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:30:14,554 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:30:14,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2018-10-25 01:30:14,555 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:30:14,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-25 01:30:14,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-25 01:30:14,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-10-25 01:30:14,557 INFO L87 Difference]: Start difference. First operand 34157 states and 62093 transitions. Second operand 11 states. [2018-10-25 01:30:21,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:30:21,230 INFO L93 Difference]: Finished difference Result 85625 states and 183132 transitions. [2018-10-25 01:30:21,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 01:30:21,230 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 251 [2018-10-25 01:30:21,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:30:21,827 INFO L225 Difference]: With dead ends: 85625 [2018-10-25 01:30:21,827 INFO L226 Difference]: Without dead ends: 50139 [2018-10-25 01:30:22,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 504 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2018-10-25 01:30:22,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50139 states. [2018-10-25 01:30:24,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50139 to 48913. [2018-10-25 01:30:24,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48913 states. [2018-10-25 01:30:24,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48913 states to 48913 states and 82650 transitions. [2018-10-25 01:30:24,609 INFO L78 Accepts]: Start accepts. Automaton has 48913 states and 82650 transitions. Word has length 251 [2018-10-25 01:30:24,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:30:24,610 INFO L481 AbstractCegarLoop]: Abstraction has 48913 states and 82650 transitions. [2018-10-25 01:30:24,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-25 01:30:24,610 INFO L276 IsEmpty]: Start isEmpty. Operand 48913 states and 82650 transitions. [2018-10-25 01:30:24,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-25 01:30:24,617 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:30:24,618 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:30:24,618 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:30:24,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:24,618 INFO L82 PathProgramCache]: Analyzing trace with hash -458311476, now seen corresponding path program 1 times [2018-10-25 01:30:24,618 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:30:24,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:24,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:30:24,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:24,620 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:30:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:30:25,196 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 123 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:30:25,196 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:30:25,196 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:30:25,196 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 254 with the following transitions: [2018-10-25 01:30:25,197 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [582], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:30:25,200 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:30:25,200 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:30:26,729 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:30:26,729 INFO L272 AbstractInterpreter]: Visited 141 different actions 692 times. Merged at 7 different actions 32 times. Never widened. Found 5 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-25 01:30:26,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:26,735 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:30:26,735 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:30:26,735 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:30:26,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:30:26,744 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:30:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:30:26,822 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:30:28,574 WARN L179 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 74 DAG size of output: 39 [2018-10-25 01:30:28,710 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 89 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:30:28,710 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:30:29,065 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2018-10-25 01:30:30,118 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-10-25 01:30:30,269 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 107 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:30:30,291 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:30:30,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 9] total 21 [2018-10-25 01:30:30,291 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:30:30,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-25 01:30:30,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-25 01:30:30,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2018-10-25 01:30:30,293 INFO L87 Difference]: Start difference. First operand 48913 states and 82650 transitions. Second operand 16 states. [2018-10-25 01:30:33,242 WARN L179 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2018-10-25 01:30:35,232 WARN L179 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2018-10-25 01:30:37,117 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2018-10-25 01:30:46,539 WARN L179 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 15 [2018-10-25 01:30:47,566 WARN L179 SmtUtils]: Spent 609.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-10-25 01:30:50,522 WARN L179 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2018-10-25 01:30:56,188 WARN L179 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 59 DAG size of output: 49 Received shutdown request... [2018-10-25 01:30:57,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-25 01:30:57,876 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 01:30:57,882 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 01:30:57,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 01:30:57 BoogieIcfgContainer [2018-10-25 01:30:57,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 01:30:57,883 INFO L168 Benchmark]: Toolchain (without parser) took 230287.14 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -120.9 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-25 01:30:57,884 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. [2018-10-25 01:30:57,884 INFO L168 Benchmark]: CACSL2BoogieTranslator took 853.38 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-25 01:30:57,885 INFO L168 Benchmark]: Boogie Procedure Inliner took 281.06 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -838.0 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-25 01:30:57,886 INFO L168 Benchmark]: Boogie Preprocessor took 137.52 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 01:30:57,887 INFO L168 Benchmark]: RCFGBuilder took 5100.01 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 188.0 MB). Peak memory consumption was 188.0 MB. Max. memory is 7.1 GB. [2018-10-25 01:30:57,888 INFO L168 Benchmark]: TraceAbstraction took 223910.06 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 465.7 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-25 01:30:57,893 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 853.38 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 281.06 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -838.0 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.52 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5100.01 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 188.0 MB). Peak memory consumption was 188.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223910.06 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 465.7 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 72). Cancelled while BasicCegarLoop was constructing difference of abstraction (48913states) and FLOYD_HOARE automaton (currently 32 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (8824 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 223.8s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 200.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1991 SDtfs, 19794 SDslu, 3644 SDs, 0 SdLazy, 37235 SolverSat, 6206 SolverUnsat, 33 SolverUnknown, 0 SolverNotchecked, 151.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 2433 GetRequests, 2158 SyntacticMatches, 14 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10056 ImplicationChecksByTransitivity, 30.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48913occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.4s AbstIntTime, 5 AbstIntIterations, 1 AbstIntStrong, 0.9972915750915752 AbsIntWeakeningRatio, 0.16 AbsIntAvgWeakeningVarsNumRemoved, 17.982857142857142 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 2552 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 11.0s InterpolantComputationTime, 2514 NumberOfCodeBlocks, 2514 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 3485 ConstructedInterpolants, 9 QuantifiedInterpolants, 5434687 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1816 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 17 InterpolantComputations, 4 PerfectInterpolantSequences, 1415/1757 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown