java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label52_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:47:03,658 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:47:03,660 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:47:03,681 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:47:03,681 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:47:03,682 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:47:03,684 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:47:03,687 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:47:03,688 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:47:03,689 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:47:03,690 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:47:03,690 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:47:03,691 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:47:03,692 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:47:03,693 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:47:03,694 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:47:03,695 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:47:03,697 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:47:03,699 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:47:03,700 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:47:03,702 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:47:03,703 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:47:03,705 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:47:03,706 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:47:03,706 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:47:03,707 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:47:03,708 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:47:03,709 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:47:03,710 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:47:03,711 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:47:03,711 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:47:03,712 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:47:03,712 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:47:03,712 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:47:03,713 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:47:03,714 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:47:03,714 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 20:47:03,730 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:47:03,731 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:47:03,732 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:47:03,732 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:47:03,732 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:47:03,732 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:47:03,733 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:47:03,733 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:47:03,733 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:47:03,733 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:47:03,733 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:47:03,734 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:47:03,734 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:47:03,735 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:47:03,735 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:47:03,735 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:47:03,735 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:47:03,735 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:47:03,736 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:47:03,736 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:47:03,736 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:47:03,736 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:47:03,737 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:47:03,737 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:47:03,737 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:47:03,737 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:47:03,738 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:47:03,738 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:47:03,738 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:47:03,738 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:47:03,738 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:47:03,739 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:47:03,739 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:47:03,739 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:47:03,739 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:47:03,800 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:47:03,817 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:47:03,821 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:47:03,823 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:47:03,823 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:47:03,824 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label52_true-unreach-call.c [2018-11-07 20:47:03,899 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b7e96817/9932cbad4aae4a45bc6c75b171130992/FLAGcae1af968 [2018-11-07 20:47:04,584 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:47:04,585 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label52_true-unreach-call.c [2018-11-07 20:47:04,611 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b7e96817/9932cbad4aae4a45bc6c75b171130992/FLAGcae1af968 [2018-11-07 20:47:04,626 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b7e96817/9932cbad4aae4a45bc6c75b171130992 [2018-11-07 20:47:04,637 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:47:04,639 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:47:04,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:47:04,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:47:04,649 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:47:04,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:47:04" (1/1) ... [2018-11-07 20:47:04,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fa853aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:04, skipping insertion in model container [2018-11-07 20:47:04,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:47:04" (1/1) ... [2018-11-07 20:47:04,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:47:04,785 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:47:05,693 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:47:05,702 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:47:06,025 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:47:06,050 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:47:06,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:06 WrapperNode [2018-11-07 20:47:06,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:47:06,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:47:06,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:47:06,052 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:47:06,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:06" (1/1) ... [2018-11-07 20:47:06,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:06" (1/1) ... [2018-11-07 20:47:06,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:47:06,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:47:06,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:47:06,276 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:47:06,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:06" (1/1) ... [2018-11-07 20:47:06,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:06" (1/1) ... [2018-11-07 20:47:06,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:06" (1/1) ... [2018-11-07 20:47:06,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:06" (1/1) ... [2018-11-07 20:47:06,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:06" (1/1) ... [2018-11-07 20:47:06,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:06" (1/1) ... [2018-11-07 20:47:06,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:06" (1/1) ... [2018-11-07 20:47:06,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:47:06,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:47:06,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:47:06,442 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:47:06,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 20:47:06,505 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:47:06,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:47:06,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:47:06,506 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:47:06,506 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:47:06,506 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:47:06,506 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:47:06,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:47:06,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:47:06,507 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:47:06,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:47:13,210 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:47:13,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:47:13 BoogieIcfgContainer [2018-11-07 20:47:13,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:47:13,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:47:13,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:47:13,216 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:47:13,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:47:04" (1/3) ... [2018-11-07 20:47:13,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e2bde1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:47:13, skipping insertion in model container [2018-11-07 20:47:13,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:06" (2/3) ... [2018-11-07 20:47:13,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e2bde1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:47:13, skipping insertion in model container [2018-11-07 20:47:13,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:47:13" (3/3) ... [2018-11-07 20:47:13,220 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label52_true-unreach-call.c [2018-11-07 20:47:13,229 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:47:13,238 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:47:13,255 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:47:13,294 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:47:13,294 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:47:13,294 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:47:13,294 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:47:13,294 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:47:13,295 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:47:13,295 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:47:13,295 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:47:13,327 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 20:47:13,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-07 20:47:13,336 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:47:13,337 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:47:13,340 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:47:13,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:47:13,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1248930748, now seen corresponding path program 1 times [2018-11-07 20:47:13,349 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:47:13,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:13,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:47:13,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:13,403 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:47:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:47:13,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:47:13,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:47:13,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:47:13,924 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:47:13,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:47:13,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:47:13,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:47:13,954 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 20:47:19,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:47:19,615 INFO L93 Difference]: Finished difference Result 1501 states and 2761 transitions. [2018-11-07 20:47:19,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:47:19,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-11-07 20:47:19,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:47:19,642 INFO L225 Difference]: With dead ends: 1501 [2018-11-07 20:47:19,642 INFO L226 Difference]: Without dead ends: 1057 [2018-11-07 20:47:19,652 INFO L604 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 [2018-11-07 20:47:19,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2018-11-07 20:47:19,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 744. [2018-11-07 20:47:19,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 20:47:19,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1125 transitions. [2018-11-07 20:47:19,754 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1125 transitions. Word has length 46 [2018-11-07 20:47:19,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:47:19,755 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1125 transitions. [2018-11-07 20:47:19,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:47:19,755 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1125 transitions. [2018-11-07 20:47:19,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-11-07 20:47:19,761 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:47:19,761 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:47:19,762 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:47:19,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:47:19,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1082195663, now seen corresponding path program 1 times [2018-11-07 20:47:19,762 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:47:19,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:19,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:47:19,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:19,764 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:47:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:47:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:47:19,987 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:47:19,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:47:19,987 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:47:19,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:47:19,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:47:19,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:47:19,990 INFO L87 Difference]: Start difference. First operand 744 states and 1125 transitions. Second operand 4 states. [2018-11-07 20:47:26,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:47:26,110 INFO L93 Difference]: Finished difference Result 2729 states and 4237 transitions. [2018-11-07 20:47:26,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:47:26,113 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2018-11-07 20:47:26,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:47:26,133 INFO L225 Difference]: With dead ends: 2729 [2018-11-07 20:47:26,133 INFO L226 Difference]: Without dead ends: 1991 [2018-11-07 20:47:26,140 INFO L604 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 [2018-11-07 20:47:26,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2018-11-07 20:47:26,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1989. [2018-11-07 20:47:26,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1989 states. [2018-11-07 20:47:26,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1989 states to 1989 states and 2772 transitions. [2018-11-07 20:47:26,224 INFO L78 Accepts]: Start accepts. Automaton has 1989 states and 2772 transitions. Word has length 116 [2018-11-07 20:47:26,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:47:26,224 INFO L480 AbstractCegarLoop]: Abstraction has 1989 states and 2772 transitions. [2018-11-07 20:47:26,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:47:26,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1989 states and 2772 transitions. [2018-11-07 20:47:26,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-11-07 20:47:26,241 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:47:26,242 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:47:26,242 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:47:26,242 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:47:26,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1707826587, now seen corresponding path program 1 times [2018-11-07 20:47:26,243 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:47:26,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:26,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:47:26,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:47:26,244 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:47:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:47:27,124 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 81 proven. 87 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 20:47:27,124 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:47:27,124 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:47:27,125 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 301 with the following transitions: [2018-11-07 20:47:27,128 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [994], [997], [1001], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:47:27,182 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:47:27,182 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:47:27,764 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:47:30,135 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:47:30,136 INFO L272 AbstractInterpreter]: Visited 164 different actions 1112 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:47:30,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:47:30,190 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:47:31,499 INFO L227 lantSequenceWeakener]: Weakened 97 states. On average, predicates are now at 77.46% of their original sizes. [2018-11-07 20:47:31,499 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:47:35,655 INFO L415 sIntCurrentIteration]: We unified 299 AI predicates to 299 [2018-11-07 20:47:35,655 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:47:35,656 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:47:35,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-07 20:47:35,656 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:47:35,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 20:47:35,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 20:47:35,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2018-11-07 20:47:35,658 INFO L87 Difference]: Start difference. First operand 1989 states and 2772 transitions. Second operand 19 states. [2018-11-07 20:48:38,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:48:38,802 INFO L93 Difference]: Finished difference Result 6563 states and 8545 transitions. [2018-11-07 20:48:38,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-07 20:48:38,802 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 300 [2018-11-07 20:48:38,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:48:38,824 INFO L225 Difference]: With dead ends: 6563 [2018-11-07 20:48:38,825 INFO L226 Difference]: Without dead ends: 4580 [2018-11-07 20:48:38,834 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 313 GetRequests, 247 SyntacticMatches, 36 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=212, Invalid=780, Unknown=0, NotChecked=0, Total=992 [2018-11-07 20:48:38,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4580 states. [2018-11-07 20:48:38,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4580 to 4048. [2018-11-07 20:48:38,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4048 states. [2018-11-07 20:48:38,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 4906 transitions. [2018-11-07 20:48:38,938 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 4906 transitions. Word has length 300 [2018-11-07 20:48:38,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:48:38,940 INFO L480 AbstractCegarLoop]: Abstraction has 4048 states and 4906 transitions. [2018-11-07 20:48:38,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 20:48:38,941 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 4906 transitions. [2018-11-07 20:48:38,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-11-07 20:48:38,950 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:48:38,952 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:48:38,953 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:48:38,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:48:38,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1890760898, now seen corresponding path program 1 times [2018-11-07 20:48:38,953 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:48:38,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:48:38,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:48:38,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:48:38,958 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:48:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:48:39,585 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 81 proven. 147 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 20:48:39,586 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:48:39,586 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:48:39,586 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 386 with the following transitions: [2018-11-07 20:48:39,587 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [994], [997], [1001], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1115], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:48:39,597 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:48:39,597 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:48:39,746 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:48:40,795 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:48:40,795 INFO L272 AbstractInterpreter]: Visited 189 different actions 554 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:48:40,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:48:40,803 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:48:41,623 INFO L227 lantSequenceWeakener]: Weakened 112 states. On average, predicates are now at 77.8% of their original sizes. [2018-11-07 20:48:41,623 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:48:44,182 INFO L415 sIntCurrentIteration]: We unified 384 AI predicates to 384 [2018-11-07 20:48:44,183 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:48:44,183 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:48:44,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-07 20:48:44,184 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:48:44,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 20:48:44,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 20:48:44,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2018-11-07 20:48:44,185 INFO L87 Difference]: Start difference. First operand 4048 states and 4906 transitions. Second operand 19 states. [2018-11-07 20:49:20,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:49:20,819 INFO L93 Difference]: Finished difference Result 8126 states and 10175 transitions. [2018-11-07 20:49:20,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-07 20:49:20,820 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 385 [2018-11-07 20:49:20,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:49:20,845 INFO L225 Difference]: With dead ends: 8126 [2018-11-07 20:49:20,845 INFO L226 Difference]: Without dead ends: 6143 [2018-11-07 20:49:20,856 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 397 GetRequests, 304 SyntacticMatches, 63 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=220, Invalid=772, Unknown=0, NotChecked=0, Total=992 [2018-11-07 20:49:20,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6143 states. [2018-11-07 20:49:20,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6143 to 5863. [2018-11-07 20:49:20,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5863 states. [2018-11-07 20:49:20,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5863 states to 5863 states and 6799 transitions. [2018-11-07 20:49:20,986 INFO L78 Accepts]: Start accepts. Automaton has 5863 states and 6799 transitions. Word has length 385 [2018-11-07 20:49:20,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:49:20,987 INFO L480 AbstractCegarLoop]: Abstraction has 5863 states and 6799 transitions. [2018-11-07 20:49:20,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 20:49:20,987 INFO L276 IsEmpty]: Start isEmpty. Operand 5863 states and 6799 transitions. [2018-11-07 20:49:21,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-11-07 20:49:21,001 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:49:21,001 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:49:21,001 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:49:21,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:49:21,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1006797980, now seen corresponding path program 1 times [2018-11-07 20:49:21,002 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:49:21,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:49:21,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:49:21,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:49:21,006 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:49:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:49:21,847 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 20:49:21,848 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:49:21,848 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:49:21,848 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 403 with the following transitions: [2018-11-07 20:49:21,849 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:49:21,857 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:49:21,857 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:49:22,006 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:49:22,847 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:49:22,848 INFO L272 AbstractInterpreter]: Visited 283 different actions 560 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:49:22,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:49:22,859 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:49:23,365 INFO L227 lantSequenceWeakener]: Weakened 53 states. On average, predicates are now at 82.3% of their original sizes. [2018-11-07 20:49:23,366 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:49:23,934 INFO L415 sIntCurrentIteration]: We unified 401 AI predicates to 401 [2018-11-07 20:49:23,934 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:49:23,934 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:49:23,935 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [7] total 25 [2018-11-07 20:49:23,935 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:49:23,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 20:49:23,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 20:49:23,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2018-11-07 20:49:23,937 INFO L87 Difference]: Start difference. First operand 5863 states and 6799 transitions. Second operand 20 states. [2018-11-07 20:50:07,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:50:07,991 INFO L93 Difference]: Finished difference Result 9077 states and 11000 transitions. [2018-11-07 20:50:07,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-07 20:50:07,991 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 402 [2018-11-07 20:50:07,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:50:08,018 INFO L225 Difference]: With dead ends: 9077 [2018-11-07 20:50:08,018 INFO L226 Difference]: Without dead ends: 7094 [2018-11-07 20:50:08,027 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 418 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=254, Invalid=1078, Unknown=0, NotChecked=0, Total=1332 [2018-11-07 20:50:08,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7094 states. [2018-11-07 20:50:08,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7094 to 7087. [2018-11-07 20:50:08,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7087 states. [2018-11-07 20:50:08,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7087 states to 7087 states and 8116 transitions. [2018-11-07 20:50:08,204 INFO L78 Accepts]: Start accepts. Automaton has 7087 states and 8116 transitions. Word has length 402 [2018-11-07 20:50:08,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:50:08,206 INFO L480 AbstractCegarLoop]: Abstraction has 7087 states and 8116 transitions. [2018-11-07 20:50:08,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 20:50:08,206 INFO L276 IsEmpty]: Start isEmpty. Operand 7087 states and 8116 transitions. [2018-11-07 20:50:08,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-11-07 20:50:08,232 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:50:08,232 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:50:08,233 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:50:08,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:50:08,233 INFO L82 PathProgramCache]: Analyzing trace with hash 123210424, now seen corresponding path program 1 times [2018-11-07 20:50:08,233 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:50:08,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:50:08,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:50:08,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:50:08,236 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:50:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:50:08,962 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2018-11-07 20:50:08,962 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:50:08,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:50:08,962 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:50:08,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:50:08,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:50:08,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:50:08,964 INFO L87 Difference]: Start difference. First operand 7087 states and 8116 transitions. Second operand 5 states. [2018-11-07 20:50:12,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:50:12,381 INFO L93 Difference]: Finished difference Result 11048 states and 13711 transitions. [2018-11-07 20:50:12,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 20:50:12,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 442 [2018-11-07 20:50:12,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:50:12,430 INFO L225 Difference]: With dead ends: 11048 [2018-11-07 20:50:12,431 INFO L226 Difference]: Without dead ends: 9065 [2018-11-07 20:50:12,443 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:50:12,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9065 states. [2018-11-07 20:50:12,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9065 to 9006. [2018-11-07 20:50:12,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9006 states. [2018-11-07 20:50:12,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9006 states to 9006 states and 10449 transitions. [2018-11-07 20:50:12,684 INFO L78 Accepts]: Start accepts. Automaton has 9006 states and 10449 transitions. Word has length 442 [2018-11-07 20:50:12,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:50:12,685 INFO L480 AbstractCegarLoop]: Abstraction has 9006 states and 10449 transitions. [2018-11-07 20:50:12,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:50:12,685 INFO L276 IsEmpty]: Start isEmpty. Operand 9006 states and 10449 transitions. [2018-11-07 20:50:12,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2018-11-07 20:50:12,707 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:50:12,707 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:50:12,707 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:50:12,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:50:12,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1896976027, now seen corresponding path program 1 times [2018-11-07 20:50:12,708 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:50:12,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:50:12,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:50:12,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:50:12,710 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:50:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:50:15,162 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 216 proven. 154 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:50:15,162 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:50:15,162 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:50:15,162 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 499 with the following transitions: [2018-11-07 20:50:15,163 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:50:15,168 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:50:15,168 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:50:15,217 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:50:16,213 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:50:16,213 INFO L272 AbstractInterpreter]: Visited 284 different actions 1131 times. Merged at 7 different actions 28 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 20:50:16,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:50:16,223 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:50:16,608 INFO L227 lantSequenceWeakener]: Weakened 495 states. On average, predicates are now at 80.3% of their original sizes. [2018-11-07 20:50:16,608 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:50:16,688 INFO L415 sIntCurrentIteration]: We unified 497 AI predicates to 497 [2018-11-07 20:50:16,689 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:50:16,689 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:50:16,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2018-11-07 20:50:16,689 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:50:16,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 20:50:16,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 20:50:16,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:50:16,690 INFO L87 Difference]: Start difference. First operand 9006 states and 10449 transitions. Second operand 10 states. [2018-11-07 20:50:35,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:50:35,753 INFO L93 Difference]: Finished difference Result 13887 states and 16669 transitions. [2018-11-07 20:50:35,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 20:50:35,753 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 498 [2018-11-07 20:50:35,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:50:35,781 INFO L225 Difference]: With dead ends: 13887 [2018-11-07 20:50:35,781 INFO L226 Difference]: Without dead ends: 9955 [2018-11-07 20:50:35,794 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 504 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-11-07 20:50:35,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9955 states. [2018-11-07 20:50:35,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9955 to 9947. [2018-11-07 20:50:35,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9947 states. [2018-11-07 20:50:35,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9947 states to 9947 states and 11482 transitions. [2018-11-07 20:50:35,976 INFO L78 Accepts]: Start accepts. Automaton has 9947 states and 11482 transitions. Word has length 498 [2018-11-07 20:50:35,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:50:35,977 INFO L480 AbstractCegarLoop]: Abstraction has 9947 states and 11482 transitions. [2018-11-07 20:50:35,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 20:50:35,977 INFO L276 IsEmpty]: Start isEmpty. Operand 9947 states and 11482 transitions. [2018-11-07 20:50:36,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2018-11-07 20:50:36,001 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:50:36,001 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:50:36,001 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:50:36,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:50:36,002 INFO L82 PathProgramCache]: Analyzing trace with hash -712936966, now seen corresponding path program 1 times [2018-11-07 20:50:36,002 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:50:36,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:50:36,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:50:36,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:50:36,004 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:50:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:50:37,276 WARN L179 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2018-11-07 20:50:37,791 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 264 proven. 13 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-07 20:50:37,791 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:50:37,791 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:50:37,791 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 515 with the following transitions: [2018-11-07 20:50:37,792 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:50:37,796 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:50:37,796 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:50:37,924 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:50:38,979 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:50:38,980 INFO L272 AbstractInterpreter]: Visited 284 different actions 1123 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:50:38,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:50:38,990 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:50:39,460 INFO L227 lantSequenceWeakener]: Weakened 511 states. On average, predicates are now at 80.29% of their original sizes. [2018-11-07 20:50:39,460 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-11-07 20:50:39,504 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:50:39,509 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:50:39,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:50:39 BoogieIcfgContainer [2018-11-07 20:50:39,509 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:50:39,510 INFO L168 Benchmark]: Toolchain (without parser) took 214872.06 ms. Allocated memory was 1.5 GB in the beginning and 5.1 GB in the end (delta: 3.6 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 20:50:39,511 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:50:39,512 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1410.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 108.3 MB). Peak memory consumption was 108.3 MB. Max. memory is 7.1 GB. [2018-11-07 20:50:39,514 INFO L168 Benchmark]: Boogie Procedure Inliner took 224.23 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 733.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -878.2 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 20:50:39,515 INFO L168 Benchmark]: Boogie Preprocessor took 165.26 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-11-07 20:50:39,515 INFO L168 Benchmark]: RCFGBuilder took 6769.94 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 307.3 MB). Peak memory consumption was 307.3 MB. Max. memory is 7.1 GB. [2018-11-07 20:50:39,516 INFO L168 Benchmark]: TraceAbstraction took 206296.80 ms. Allocated memory was 2.2 GB in the beginning and 5.1 GB in the end (delta: 2.9 GB). Free memory was 1.9 GB in the beginning and 3.7 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 20:50:39,521 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1410.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 108.3 MB). Peak memory consumption was 108.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 224.23 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 733.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -878.2 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 165.26 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6769.94 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 307.3 MB). Peak memory consumption was 307.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206296.80 ms. Allocated memory was 2.2 GB in the beginning and 5.1 GB in the end (delta: 2.9 GB). Free memory was 1.9 GB in the beginning and 3.7 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 124). Cancelled while BasicCegarLoop was analyzing trace of length 515 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 206.2s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 178.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2675 SDtfs, 21604 SDslu, 2555 SDs, 0 SdLazy, 25533 SolverSat, 2544 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 72.9s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 1652 GetRequests, 1434 SyntacticMatches, 100 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1261 ImplicationChecksByTransitivity, 9.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9947occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.5s AbstIntTime, 5 AbstIntIterations, 5 AbstIntStrong, 0.9979620775402125 AbsIntWeakeningRatio, 0.06876790830945559 AbsIntAvgWeakeningVarsNumRemoved, 15.08261700095511 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 1201 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 2189 NumberOfCodeBlocks, 2189 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 2182 ConstructedInterpolants, 0 QuantifiedInterpolants, 6642598 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 755/1215 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown