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_label45_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:32:40,713 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:32:40,715 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:32:40,727 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:32:40,728 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:32:40,729 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:32:40,730 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:32:40,732 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:32:40,734 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:32:40,735 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:32:40,736 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:32:40,736 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:32:40,737 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:32:40,738 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:32:40,739 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:32:40,740 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:32:40,741 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:32:40,743 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:32:40,745 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:32:40,747 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:32:40,751 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:32:40,756 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:32:40,758 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 01:32:40,767 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 01:32:40,793 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:32:40,794 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:32:40,795 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:32:40,796 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:32:40,796 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:32:40,796 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:32:40,797 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:32:40,798 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:32:40,798 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:32:40,798 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:32:40,798 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:32:40,799 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:32:40,799 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:32:40,799 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:32:40,800 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:32:40,801 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:32:40,801 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:32:40,801 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:32:40,801 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:32:40,801 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:32:40,801 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:32:40,802 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:32:40,802 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:32:40,802 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:32:40,802 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:32:40,802 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:32:40,803 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:32:40,804 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:32:40,804 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:32:40,805 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:32:40,805 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:32:40,805 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:32:40,805 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:32:40,805 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:32:40,806 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:32:40,806 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:32:40,868 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:32:40,885 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:32:40,890 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:32:40,892 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:32:40,892 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:32:40,893 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label45_true-unreach-call.c [2018-10-25 01:32:40,969 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7d62ac1dd/668f2b664b7d49d0a9794a0457ae3925/FLAG8cf71e2d8 [2018-10-25 01:32:41,552 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:32:41,554 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label45_true-unreach-call.c [2018-10-25 01:32:41,571 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7d62ac1dd/668f2b664b7d49d0a9794a0457ae3925/FLAG8cf71e2d8 [2018-10-25 01:32:41,592 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7d62ac1dd/668f2b664b7d49d0a9794a0457ae3925 [2018-10-25 01:32:41,604 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:32:41,607 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:32:41,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:32:41,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:32:41,615 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:32:41,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:32:41" (1/1) ... [2018-10-25 01:32:41,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63bfd507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:32:41, skipping insertion in model container [2018-10-25 01:32:41,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:32:41" (1/1) ... [2018-10-25 01:32:41,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:32:41,700 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:32:42,250 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:32:42,255 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:32:42,538 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:32:42,559 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:32:42,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:32:42 WrapperNode [2018-10-25 01:32:42,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:32:42,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:32:42,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:32:42,562 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:32:42,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:32:42" (1/1) ... [2018-10-25 01:32:42,608 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:32:42" (1/1) ... [2018-10-25 01:32:42,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:32:42,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:32:42,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:32:42,854 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:32:42,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:32:42" (1/1) ... [2018-10-25 01:32:42,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:32:42" (1/1) ... [2018-10-25 01:32:42,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:32:42" (1/1) ... [2018-10-25 01:32:42,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:32:42" (1/1) ... [2018-10-25 01:32:42,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:32:42" (1/1) ... [2018-10-25 01:32:42,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:32:42" (1/1) ... [2018-10-25 01:32:42,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:32:42" (1/1) ... [2018-10-25 01:32:43,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:32:43,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:32:43,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:32:43,024 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:32:43,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:32:42" (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 01:32:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:32:43,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:32:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:32:43,097 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:32:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:32:43,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:32:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:32:43,100 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:32:47,701 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:32:47,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:32:47 BoogieIcfgContainer [2018-10-25 01:32:47,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:32:47,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:32:47,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:32:47,711 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:32:47,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:32:41" (1/3) ... [2018-10-25 01:32:47,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63188a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:32:47, skipping insertion in model container [2018-10-25 01:32:47,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:32:42" (2/3) ... [2018-10-25 01:32:47,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63188a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:32:47, skipping insertion in model container [2018-10-25 01:32:47,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:32:47" (3/3) ... [2018-10-25 01:32:47,716 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label45_true-unreach-call.c [2018-10-25 01:32:47,725 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:32:47,735 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:32:47,754 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:32:47,805 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:32:47,806 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:32:47,806 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:32:47,807 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:32:47,807 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:32:47,807 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:32:47,807 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:32:47,807 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:32:47,838 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-25 01:32:47,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-25 01:32:47,847 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:32:47,848 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] [2018-10-25 01:32:47,851 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:32:47,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:47,858 INFO L82 PathProgramCache]: Analyzing trace with hash -23841615, now seen corresponding path program 1 times [2018-10-25 01:32:47,861 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:32:47,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:47,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:47,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:47,912 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:32:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:48,334 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 01:32:48,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:32:48,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:32:48,337 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:32:48,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:32:48,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:32:48,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:32:48,364 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-25 01:32:52,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:32:52,000 INFO L93 Difference]: Finished difference Result 979 states and 1754 transitions. [2018-10-25 01:32:52,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:32:52,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-10-25 01:32:52,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:32:52,027 INFO L225 Difference]: With dead ends: 979 [2018-10-25 01:32:52,028 INFO L226 Difference]: Without dead ends: 680 [2018-10-25 01:32:52,038 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 01:32:52,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2018-10-25 01:32:52,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 484. [2018-10-25 01:32:52,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2018-10-25 01:32:52,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 730 transitions. [2018-10-25 01:32:52,136 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 730 transitions. Word has length 39 [2018-10-25 01:32:52,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:32:52,136 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 730 transitions. [2018-10-25 01:32:52,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:32:52,137 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 730 transitions. [2018-10-25 01:32:52,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-25 01:32:52,143 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:32:52,143 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:32:52,144 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:32:52,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:52,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1487845251, now seen corresponding path program 1 times [2018-10-25 01:32:52,145 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:32:52,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:52,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:52,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:52,146 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:32:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:52,554 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:32:52,554 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:32:52,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:32:52,555 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:32:52,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:32:52,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:32:52,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:32:52,558 INFO L87 Difference]: Start difference. First operand 484 states and 730 transitions. Second operand 6 states. [2018-10-25 01:32:56,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:32:56,927 INFO L93 Difference]: Finished difference Result 1555 states and 2493 transitions. [2018-10-25 01:32:56,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:32:56,928 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-10-25 01:32:56,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:32:56,941 INFO L225 Difference]: With dead ends: 1555 [2018-10-25 01:32:56,941 INFO L226 Difference]: Without dead ends: 1077 [2018-10-25 01:32:56,945 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 01:32:56,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2018-10-25 01:32:57,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1063. [2018-10-25 01:32:57,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2018-10-25 01:32:57,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1592 transitions. [2018-10-25 01:32:57,034 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1592 transitions. Word has length 112 [2018-10-25 01:32:57,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:32:57,035 INFO L481 AbstractCegarLoop]: Abstraction has 1063 states and 1592 transitions. [2018-10-25 01:32:57,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:32:57,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1592 transitions. [2018-10-25 01:32:57,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-25 01:32:57,045 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:32:57,045 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:32:57,046 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:32:57,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:57,047 INFO L82 PathProgramCache]: Analyzing trace with hash 84082156, now seen corresponding path program 1 times [2018-10-25 01:32:57,047 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:32:57,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:57,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:57,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:57,049 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:32:57,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:57,254 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:32:57,255 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:32:57,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:32:57,255 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:32:57,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:32:57,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:32:57,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:32:57,257 INFO L87 Difference]: Start difference. First operand 1063 states and 1592 transitions. Second operand 4 states. [2018-10-25 01:33:00,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:33:00,160 INFO L93 Difference]: Finished difference Result 2907 states and 4465 transitions. [2018-10-25 01:33:00,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:33:00,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2018-10-25 01:33:00,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:33:00,177 INFO L225 Difference]: With dead ends: 2907 [2018-10-25 01:33:00,177 INFO L226 Difference]: Without dead ends: 1850 [2018-10-25 01:33:00,186 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 01:33:00,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2018-10-25 01:33:00,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1646. [2018-10-25 01:33:00,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1646 states. [2018-10-25 01:33:00,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2436 transitions. [2018-10-25 01:33:00,257 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2436 transitions. Word has length 113 [2018-10-25 01:33:00,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:33:00,258 INFO L481 AbstractCegarLoop]: Abstraction has 1646 states and 2436 transitions. [2018-10-25 01:33:00,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:33:00,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2436 transitions. [2018-10-25 01:33:00,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-25 01:33:00,271 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:33:00,272 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:33:00,275 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:33:00,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:00,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1266440719, now seen corresponding path program 1 times [2018-10-25 01:33:00,275 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:33:00,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:00,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:00,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:00,277 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:33:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:33:00,650 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:33:00,650 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:33:00,651 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 135 with the following transitions: [2018-10-25 01:33:00,653 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [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], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:33:00,699 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:33:00,699 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:33:01,437 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:33:01,438 INFO L272 AbstractInterpreter]: Visited 99 different actions 99 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-25 01:33:01,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:01,481 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:33:02,152 INFO L232 lantSequenceWeakener]: Weakened 128 states. On average, predicates are now at 73.48% of their original sizes. [2018-10-25 01:33:02,153 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:33:02,386 INFO L413 sIntCurrentIteration]: We have 133 unified AI predicates [2018-10-25 01:33:02,388 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:33:02,389 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:33:02,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-10-25 01:33:02,389 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:33:02,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:33:02,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:33:02,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:33:02,391 INFO L87 Difference]: Start difference. First operand 1646 states and 2436 transitions. Second operand 6 states. [2018-10-25 01:34:51,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:34:51,015 INFO L93 Difference]: Finished difference Result 3478 states and 5113 transitions. [2018-10-25 01:34:51,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:34:51,016 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-10-25 01:34:51,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:34:51,026 INFO L225 Difference]: With dead ends: 3478 [2018-10-25 01:34:51,026 INFO L226 Difference]: Without dead ends: 1838 [2018-10-25 01:34:51,032 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:34:51,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2018-10-25 01:34:51,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1836. [2018-10-25 01:34:51,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1836 states. [2018-10-25 01:34:51,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2636 transitions. [2018-10-25 01:34:51,083 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2636 transitions. Word has length 134 [2018-10-25 01:34:51,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:34:51,084 INFO L481 AbstractCegarLoop]: Abstraction has 1836 states and 2636 transitions. [2018-10-25 01:34:51,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:34:51,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2636 transitions. [2018-10-25 01:34:51,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-25 01:34:51,089 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:34:51,090 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:34:51,090 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:34:51,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:51,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1523785897, now seen corresponding path program 1 times [2018-10-25 01:34:51,091 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:34:51,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:51,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:34:51,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:51,092 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:34:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:34:51,434 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-25 01:34:51,435 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:34:51,435 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:34:51,435 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-10-25 01:34:51,436 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [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], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:34:51,441 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:34:51,442 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:34:52,526 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:34:52,526 INFO L272 AbstractInterpreter]: Visited 126 different actions 374 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 01:34:52,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:52,537 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:34:52,537 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:34:52,538 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 01:34:52,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:34:52,548 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:34:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:34:52,695 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:34:53,511 WARN L179 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2018-10-25 01:34:53,701 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-25 01:34:53,701 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:34:54,662 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-25 01:34:54,684 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 01:34:54,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-10-25 01:34:54,685 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:34:54,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:34:54,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:34:54,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-25 01:34:54,686 INFO L87 Difference]: Start difference. First operand 1836 states and 2636 transitions. Second operand 6 states. [2018-10-25 01:34:59,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:34:59,000 INFO L93 Difference]: Finished difference Result 5773 states and 9013 transitions. [2018-10-25 01:34:59,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:34:59,010 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 251 [2018-10-25 01:34:59,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:34:59,042 INFO L225 Difference]: With dead ends: 5773 [2018-10-25 01:34:59,042 INFO L226 Difference]: Without dead ends: 4133 [2018-10-25 01:34:59,058 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 497 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-25 01:34:59,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4133 states. [2018-10-25 01:34:59,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4133 to 4133. [2018-10-25 01:34:59,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4133 states. [2018-10-25 01:34:59,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4133 states to 4133 states and 6246 transitions. [2018-10-25 01:34:59,191 INFO L78 Accepts]: Start accepts. Automaton has 4133 states and 6246 transitions. Word has length 251 [2018-10-25 01:34:59,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:34:59,195 INFO L481 AbstractCegarLoop]: Abstraction has 4133 states and 6246 transitions. [2018-10-25 01:34:59,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:34:59,195 INFO L276 IsEmpty]: Start isEmpty. Operand 4133 states and 6246 transitions. [2018-10-25 01:34:59,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-25 01:34:59,206 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:34:59,206 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:34:59,206 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:34:59,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:59,207 INFO L82 PathProgramCache]: Analyzing trace with hash 480506299, now seen corresponding path program 1 times [2018-10-25 01:34:59,207 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:34:59,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:59,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:34:59,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:59,212 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:34:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:34:59,619 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:34:59,620 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:34:59,620 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:34:59,620 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 275 with the following transitions: [2018-10-25 01:34:59,621 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [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], [595], [599], [603], [607], [611], [615], [618], [621], [625], [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 01:34:59,626 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:34:59,626 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:35:00,161 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:35:00,162 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 01:35:00,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:35:00,168 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:35:00,168 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:35:00,168 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 01:35:00,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:35:00,177 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:35:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:35:00,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:35:00,428 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-10-25 01:35:00,429 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:35:00,624 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-10-25 01:35:00,658 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:35:00,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-25 01:35:00,659 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:35:00,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:35:00,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:35:00,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:35:00,660 INFO L87 Difference]: Start difference. First operand 4133 states and 6246 transitions. Second operand 3 states. [2018-10-25 01:35:02,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:35:02,173 INFO L93 Difference]: Finished difference Result 11265 states and 17958 transitions. [2018-10-25 01:35:02,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:35:02,174 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 274 [2018-10-25 01:35:02,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:35:02,223 INFO L225 Difference]: With dead ends: 11265 [2018-10-25 01:35:02,223 INFO L226 Difference]: Without dead ends: 7328 [2018-10-25 01:35:02,266 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 548 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:35:02,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7328 states. [2018-10-25 01:35:02,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7328 to 7320. [2018-10-25 01:35:02,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7320 states. [2018-10-25 01:35:02,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7320 states to 7320 states and 10427 transitions. [2018-10-25 01:35:02,472 INFO L78 Accepts]: Start accepts. Automaton has 7320 states and 10427 transitions. Word has length 274 [2018-10-25 01:35:02,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:35:02,473 INFO L481 AbstractCegarLoop]: Abstraction has 7320 states and 10427 transitions. [2018-10-25 01:35:02,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:35:02,473 INFO L276 IsEmpty]: Start isEmpty. Operand 7320 states and 10427 transitions. [2018-10-25 01:35:02,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-10-25 01:35:02,502 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:35:02,502 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:35:02,502 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:35:02,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:35:02,503 INFO L82 PathProgramCache]: Analyzing trace with hash -488047406, now seen corresponding path program 1 times [2018-10-25 01:35:02,503 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:35:02,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:35:02,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:35:02,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:35:02,504 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:35:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:35:03,601 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-10-25 01:35:03,602 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:35:03,602 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:35:03,602 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 348 with the following transitions: [2018-10-25 01:35:03,603 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [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], [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], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [971], [975], [979], [983], [987], [991], [994], [999], [1001], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:35:03,610 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:35:03,610 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:35:04,575 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:35:04,575 INFO L272 AbstractInterpreter]: Visited 187 different actions 919 times. Merged at 7 different actions 31 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-25 01:35:04,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:35:04,614 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:35:04,614 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:35:04,614 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 01:35:04,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:35:04,626 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:35:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:35:04,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:35:07,354 WARN L179 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-10-25 01:35:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 11 proven. 60 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-10-25 01:35:07,705 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:35:07,955 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-25 01:35:08,072 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-25 01:35:08,691 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:08,745 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:08,792 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:08,846 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:08,924 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:09,128 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:09,203 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:09,243 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:09,281 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:09,331 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:09,393 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:09,459 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:09,556 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:09,605 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:09,659 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:09,818 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:09,870 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:09,916 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:09,962 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:10,071 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:10,112 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:10,164 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:10,209 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:10,249 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:10,288 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:10,370 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:10,408 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:10,473 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:10,565 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:10,615 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:10,655 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:10,693 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:10,757 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:11,069 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:11,138 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:11,216 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:11,555 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:11,733 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:11,771 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:11,866 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:11,905 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:11,946 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:11,988 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:12,270 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:12,385 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:12,429 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:12,474 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:12,546 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:12,584 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:12,621 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:12,667 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:12,707 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:12,797 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:12,835 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:12,873 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:12,954 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:12,992 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:13,033 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:13,085 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:13,125 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:13,164 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:13,201 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:13,244 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:13,280 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:13,318 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:13,357 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:13,396 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:13,442 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:13,479 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:13,544 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:13,581 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:13,620 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:13,664 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:13,706 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:13,928 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:13,969 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:14,006 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:14,043 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:14,080 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:14,119 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:14,157 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:14,193 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:14,229 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:14,268 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:14,305 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:14,340 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:14,381 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:14,417 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:14,496 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:14,562 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:14,609 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:14,659 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:14,711 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:14,758 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:14,825 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:14,885 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:14,970 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:15,008 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:15,048 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:15,172 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:15,211 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:15,250 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:15,288 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:15,338 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:15,377 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:15,713 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:16,037 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:16,367 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:16,432 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:16,485 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:16,822 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:16,880 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:16,920 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:16,968 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:17,237 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:17,279 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:17,317 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:17,378 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:17,415 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:17,454 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:17,492 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:17,529 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:17,572 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:17,610 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:17,648 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:17,687 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:17,724 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:17,775 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:17,824 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:17,943 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:17,981 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:18,021 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:18,059 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:18,098 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:18,165 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:18,203 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:18,243 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:18,580 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:18,653 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:18,689 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:18,726 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:18,763 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:18,826 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:18,863 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:18,899 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:18,936 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:18,973 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:19,010 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:19,049 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:19,086 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:19,122 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:19,159 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:19,195 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:19,231 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:19,268 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:19,305 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:19,350 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:19,388 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:19,426 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:19,464 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:19,500 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:19,559 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:19,601 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:19,648 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:19,694 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:19,731 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:19,799 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:35:21,559 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 67 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:35:21,581 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:35:21,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2018-10-25 01:35:21,582 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:35:21,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-25 01:35:21,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-25 01:35:21,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2018-10-25 01:35:21,585 INFO L87 Difference]: Start difference. First operand 7320 states and 10427 transitions. Second operand 16 states. [2018-10-25 01:35:25,327 WARN L179 SmtUtils]: Spent 1.85 s on a formula simplification that was a NOOP. DAG size: 35 [2018-10-25 01:35:43,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:35:43,422 INFO L93 Difference]: Finished difference Result 32551 states and 58455 transitions. [2018-10-25 01:35:43,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-25 01:35:43,423 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 347 [2018-10-25 01:35:43,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:35:43,693 INFO L225 Difference]: With dead ends: 32551 [2018-10-25 01:35:43,693 INFO L226 Difference]: Without dead ends: 25427 [2018-10-25 01:35:43,816 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 738 GetRequests, 518 SyntacticMatches, 168 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2399 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=743, Invalid=2119, Unknown=0, NotChecked=0, Total=2862 [2018-10-25 01:35:43,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25427 states. [2018-10-25 01:35:44,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25427 to 24534. [2018-10-25 01:35:44,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24534 states. [2018-10-25 01:35:44,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24534 states to 24534 states and 35225 transitions. [2018-10-25 01:35:44,931 INFO L78 Accepts]: Start accepts. Automaton has 24534 states and 35225 transitions. Word has length 347 [2018-10-25 01:35:44,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:35:44,932 INFO L481 AbstractCegarLoop]: Abstraction has 24534 states and 35225 transitions. [2018-10-25 01:35:44,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-25 01:35:44,933 INFO L276 IsEmpty]: Start isEmpty. Operand 24534 states and 35225 transitions. [2018-10-25 01:35:45,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-10-25 01:35:45,047 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:35:45,048 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:35:45,048 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:35:45,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:35:45,049 INFO L82 PathProgramCache]: Analyzing trace with hash -3006805, now seen corresponding path program 1 times [2018-10-25 01:35:45,049 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:35:45,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:35:45,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:35:45,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:35:45,050 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:35:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:35:45,733 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-25 01:35:45,733 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:35:45,733 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:35:45,733 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 386 with the following transitions: [2018-10-25 01:35:45,734 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [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], [538], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [854], [859], [861], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:35:45,739 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:35:45,739 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:35:47,230 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:35:47,230 INFO L272 AbstractInterpreter]: Visited 156 different actions 617 times. Merged at 7 different actions 28 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-25 01:35:47,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:35:47,238 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:35:47,238 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:35:47,238 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 01:35:47,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:35:47,246 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:35:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:35:47,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:35:47,606 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-25 01:35:47,606 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:35:48,426 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-25 01:35:48,447 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:35:48,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-10-25 01:35:48,448 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:35:48,449 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-25 01:35:48,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-25 01:35:48,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:35:48,449 INFO L87 Difference]: Start difference. First operand 24534 states and 35225 transitions. Second operand 7 states. [2018-10-25 01:35:52,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:35:52,410 INFO L93 Difference]: Finished difference Result 63702 states and 98507 transitions. [2018-10-25 01:35:52,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-25 01:35:52,410 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 385 [2018-10-25 01:35:52,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:35:52,587 INFO L225 Difference]: With dead ends: 63702 [2018-10-25 01:35:52,587 INFO L226 Difference]: Without dead ends: 39364 [2018-10-25 01:35:52,736 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 771 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-10-25 01:35:52,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39364 states. [2018-10-25 01:35:53,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39364 to 38821. [2018-10-25 01:35:53,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38821 states. [2018-10-25 01:35:53,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38821 states to 38821 states and 55725 transitions. [2018-10-25 01:35:53,944 INFO L78 Accepts]: Start accepts. Automaton has 38821 states and 55725 transitions. Word has length 385 [2018-10-25 01:35:53,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:35:53,945 INFO L481 AbstractCegarLoop]: Abstraction has 38821 states and 55725 transitions. [2018-10-25 01:35:53,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-25 01:35:53,945 INFO L276 IsEmpty]: Start isEmpty. Operand 38821 states and 55725 transitions. [2018-10-25 01:35:54,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-10-25 01:35:54,143 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:35:54,143 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-25 01:35:54,143 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:35:54,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:35:54,144 INFO L82 PathProgramCache]: Analyzing trace with hash 271070323, now seen corresponding path program 1 times [2018-10-25 01:35:54,144 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:35:54,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:35:54,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:35:54,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:35:54,145 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:35:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:35:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 317 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:35:55,879 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:35:55,879 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:35:55,879 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 388 with the following transitions: [2018-10-25 01:35:55,879 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [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], [726], [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 01:35:55,882 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:35:55,882 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:36:05,133 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:36:05,133 INFO L272 AbstractInterpreter]: Visited 142 different actions 710 times. Merged at 8 different actions 45 times. Widened at 1 different actions 3 times. Found 9 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-25 01:36:05,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:36:05,142 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:36:05,142 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:36:05,142 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:36:05,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:36:05,150 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:36:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:36:05,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:36:05,403 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 372 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-10-25 01:36:05,404 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:36:05,696 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 220 proven. 94 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-25 01:36:05,717 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:36:05,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5] total 21 [2018-10-25 01:36:05,718 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:36:05,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-25 01:36:05,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-25 01:36:05,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2018-10-25 01:36:05,719 INFO L87 Difference]: Start difference. First operand 38821 states and 55725 transitions. Second operand 20 states. [2018-10-25 01:36:10,157 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-25 01:36:13,517 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 23 [2018-10-25 01:36:14,078 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2018-10-25 01:36:16,208 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2018-10-25 01:36:16,623 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2018-10-25 01:36:17,374 WARN L179 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2018-10-25 01:36:17,783 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 23 [2018-10-25 01:36:20,522 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2018-10-25 01:36:21,700 WARN L179 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 23 [2018-10-25 01:36:28,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:36:28,038 INFO L93 Difference]: Finished difference Result 94813 states and 159109 transitions. [2018-10-25 01:36:28,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-25 01:36:28,039 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 387 [2018-10-25 01:36:28,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:36:28,337 INFO L225 Difference]: With dead ends: 94813 [2018-10-25 01:36:28,338 INFO L226 Difference]: Without dead ends: 39944 [2018-10-25 01:36:28,729 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 913 GetRequests, 798 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4817 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1921, Invalid=11189, Unknown=0, NotChecked=0, Total=13110 [2018-10-25 01:36:28,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39944 states. [2018-10-25 01:36:30,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39944 to 37112. [2018-10-25 01:36:30,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37112 states. [2018-10-25 01:36:30,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37112 states to 37112 states and 51356 transitions. [2018-10-25 01:36:30,414 INFO L78 Accepts]: Start accepts. Automaton has 37112 states and 51356 transitions. Word has length 387 [2018-10-25 01:36:30,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:36:30,414 INFO L481 AbstractCegarLoop]: Abstraction has 37112 states and 51356 transitions. [2018-10-25 01:36:30,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-25 01:36:30,415 INFO L276 IsEmpty]: Start isEmpty. Operand 37112 states and 51356 transitions. [2018-10-25 01:36:30,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-10-25 01:36:30,502 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:36:30,502 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:36:30,502 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:36:30,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:36:30,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1124564864, now seen corresponding path program 1 times [2018-10-25 01:36:30,503 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:36:30,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:36:30,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:36:30,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:36:30,505 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:36:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:36:31,493 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 321 proven. 99 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-25 01:36:31,494 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:36:31,494 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:36:31,494 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 417 with the following transitions: [2018-10-25 01:36:31,495 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [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], [595], [599], [603], [607], [611], [615], [626], [629], [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], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [854], [859], [861], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:36:31,498 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:36:31,498 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-25 01:36:32,167 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-25 01:36:32,168 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-25 01:36:32,168 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-25 01:36:32,169 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:36:32,169 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:36:32,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:36:32,191 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:36:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:36:32,322 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:36:32,328 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-25 01:36:32,529 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:36:32,529 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 01:36:32,536 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 01:36:32,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 01:36:32 BoogieIcfgContainer [2018-10-25 01:36:32,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 01:36:32,537 INFO L168 Benchmark]: Toolchain (without parser) took 230932.22 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -514.8 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-25 01:36:32,540 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 01:36:32,541 INFO L168 Benchmark]: CACSL2BoogieTranslator took 950.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-25 01:36:32,542 INFO L168 Benchmark]: Boogie Procedure Inliner took 291.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -850.1 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-25 01:36:32,543 INFO L168 Benchmark]: Boogie Preprocessor took 169.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-25 01:36:32,543 INFO L168 Benchmark]: RCFGBuilder took 4679.17 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: 174.2 MB). Peak memory consumption was 174.2 MB. Max. memory is 7.1 GB. [2018-10-25 01:36:32,545 INFO L168 Benchmark]: TraceAbstraction took 224832.62 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 2.0 GB in the end (delta: 83.9 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-25 01:36:32,553 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 950.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 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 291.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -850.1 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 169.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4679.17 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: 174.2 MB). Peak memory consumption was 174.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224832.62 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 2.0 GB in the end (delta: 83.9 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 102). Cancelled while BasicCegarLoop was analyzing trace of length 417 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 224.7s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 175.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1983 SDtfs, 16767 SDslu, 3335 SDs, 0 SdLazy, 30663 SolverSat, 6948 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 142.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 3654 GetRequests, 3270 SyntacticMatches, 178 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7249 ImplicationChecksByTransitivity, 27.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38821occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.9s AbstIntTime, 7 AbstIntIterations, 1 AbstIntStrong, 0.9976161557740504 AbsIntWeakeningRatio, 0.16541353383458646 AbsIntAvgWeakeningVarsNumRemoved, 18.172932330827066 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 4692 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 24.6s InterpolantComputationTime, 3686 NumberOfCodeBlocks, 3686 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 5311 ConstructedInterpolants, 314 QuantifiedInterpolants, 13607099 SizeOfPredicates, 8 NumberOfNonLiveVariables, 2770 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 19 InterpolantComputations, 6 PerfectInterpolantSequences, 3378/3996 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown