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/Problem18_label30_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:43:45,775 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:43:45,777 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:43:45,797 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:43:45,797 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:43:45,798 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:43:45,799 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:43:45,801 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:43:45,803 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:43:45,804 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:43:45,810 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:43:45,811 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:43:45,815 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:43:45,816 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:43:45,819 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:43:45,821 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:43:45,822 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:43:45,826 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:43:45,828 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:43:45,831 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:43:45,832 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:43:45,833 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:43:45,835 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 08:43:45,841 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:43:45,842 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:43:45,843 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:43:45,843 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:43:45,844 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 08:43:45,859 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:43:45,859 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:43:45,862 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:43:45,862 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:43:45,862 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:43:45,862 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:43:45,863 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:43:45,863 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:43:45,863 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:43:45,863 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:43:45,863 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:43:45,864 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:43:45,864 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:43:45,864 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:43:45,865 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:43:45,865 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:43:45,865 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:43:45,865 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:43:45,866 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:43:45,866 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:43:45,866 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:43:45,866 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:43:45,866 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:43:45,867 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:43:45,867 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:43:45,867 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:43:45,867 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:43:45,867 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:43:45,868 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:43:45,868 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:43:45,868 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:43:45,868 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:43:45,868 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:43:45,868 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:43:45,869 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:43:45,869 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:43:45,920 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:43:45,938 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:43:45,943 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:43:45,944 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:43:45,945 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:43:45,945 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label30_true-unreach-call.c [2018-10-27 08:43:46,010 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/aa43fe04c/24a87970f59d44e0bb63ce5761b085c0/FLAG48db50615 [2018-10-27 08:43:46,805 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:43:46,806 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label30_true-unreach-call.c [2018-10-27 08:43:46,829 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/aa43fe04c/24a87970f59d44e0bb63ce5761b085c0/FLAG48db50615 [2018-10-27 08:43:46,845 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/aa43fe04c/24a87970f59d44e0bb63ce5761b085c0 [2018-10-27 08:43:46,856 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:43:46,858 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:43:46,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:43:46,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:43:46,864 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:43:46,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:43:46" (1/1) ... [2018-10-27 08:43:46,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441f49ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:46, skipping insertion in model container [2018-10-27 08:43:46,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:43:46" (1/1) ... [2018-10-27 08:43:46,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:43:47,007 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:43:48,087 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:43:48,091 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:43:48,535 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:43:48,565 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:43:48,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:48 WrapperNode [2018-10-27 08:43:48,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:43:48,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:43:48,567 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:43:48,567 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:43:48,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:48" (1/1) ... [2018-10-27 08:43:48,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:48" (1/1) ... [2018-10-27 08:43:48,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:43:48,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:43:48,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:43:48,957 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:43:48,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:48" (1/1) ... [2018-10-27 08:43:48,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:48" (1/1) ... [2018-10-27 08:43:48,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:48" (1/1) ... [2018-10-27 08:43:48,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:48" (1/1) ... [2018-10-27 08:43:49,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:48" (1/1) ... [2018-10-27 08:43:49,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:48" (1/1) ... [2018-10-27 08:43:49,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:48" (1/1) ... [2018-10-27 08:43:49,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:43:49,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:43:49,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:43:49,156 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:43:49,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:43:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:43:49,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:43:49,232 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 08:43:49,232 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 08:43:49,232 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:43:49,232 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:43:49,232 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:43:49,233 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:43:49,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:43:49,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:43:49,234 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:43:49,234 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:43:57,637 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:43:57,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:43:57 BoogieIcfgContainer [2018-10-27 08:43:57,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:43:57,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:43:57,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:43:57,645 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:43:57,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:43:46" (1/3) ... [2018-10-27 08:43:57,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4211429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:43:57, skipping insertion in model container [2018-10-27 08:43:57,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:43:48" (2/3) ... [2018-10-27 08:43:57,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4211429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:43:57, skipping insertion in model container [2018-10-27 08:43:57,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:43:57" (3/3) ... [2018-10-27 08:43:57,649 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label30_true-unreach-call.c [2018-10-27 08:43:57,659 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:43:57,669 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:43:57,686 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:43:57,738 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:43:57,738 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:43:57,738 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:43:57,739 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:43:57,739 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:43:57,739 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:43:57,739 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:43:57,739 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:43:57,777 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-27 08:43:57,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-27 08:43:57,788 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:43:57,790 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:43:57,794 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:43:57,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:43:57,801 INFO L82 PathProgramCache]: Analyzing trace with hash 2116267860, now seen corresponding path program 1 times [2018-10-27 08:43:57,804 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:43:57,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:43:57,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:43:57,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:43:57,859 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:43:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:43:58,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:43:58,344 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:43:58,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:43:58,345 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:43:58,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:43:58,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:43:58,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:43:58,374 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-10-27 08:44:09,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:44:09,085 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-10-27 08:44:09,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:44:09,088 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-10-27 08:44:09,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:44:09,140 INFO L225 Difference]: With dead ends: 2974 [2018-10-27 08:44:09,144 INFO L226 Difference]: Without dead ends: 2193 [2018-10-27 08:44:09,160 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:44:09,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-10-27 08:44:09,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2018-10-27 08:44:09,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-10-27 08:44:09,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3506 transitions. [2018-10-27 08:44:09,488 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3506 transitions. Word has length 50 [2018-10-27 08:44:09,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:44:09,489 INFO L481 AbstractCegarLoop]: Abstraction has 2193 states and 3506 transitions. [2018-10-27 08:44:09,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:44:09,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3506 transitions. [2018-10-27 08:44:09,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-27 08:44:09,501 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:44:09,502 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:44:09,502 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:44:09,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:44:09,503 INFO L82 PathProgramCache]: Analyzing trace with hash -940653118, now seen corresponding path program 1 times [2018-10-27 08:44:09,504 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:44:09,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:44:09,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:44:09,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:44:09,506 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:44:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:44:09,872 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:44:09,906 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:44:09,906 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:44:09,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 08:44:09,907 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:44:09,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 08:44:09,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 08:44:09,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 08:44:09,910 INFO L87 Difference]: Start difference. First operand 2193 states and 3506 transitions. Second operand 5 states. [2018-10-27 08:44:18,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:44:18,978 INFO L93 Difference]: Finished difference Result 6600 states and 10738 transitions. [2018-10-27 08:44:18,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:44:18,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2018-10-27 08:44:18,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:44:19,014 INFO L225 Difference]: With dead ends: 6600 [2018-10-27 08:44:19,014 INFO L226 Difference]: Without dead ends: 4413 [2018-10-27 08:44:19,022 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:44:19,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-10-27 08:44:19,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4378. [2018-10-27 08:44:19,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2018-10-27 08:44:19,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6712 transitions. [2018-10-27 08:44:19,190 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6712 transitions. Word has length 120 [2018-10-27 08:44:19,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:44:19,190 INFO L481 AbstractCegarLoop]: Abstraction has 4378 states and 6712 transitions. [2018-10-27 08:44:19,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 08:44:19,191 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6712 transitions. [2018-10-27 08:44:19,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-27 08:44:19,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:44:19,205 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:44:19,208 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:44:19,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:44:19,208 INFO L82 PathProgramCache]: Analyzing trace with hash 599162315, now seen corresponding path program 1 times [2018-10-27 08:44:19,209 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:44:19,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:44:19,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:44:19,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:44:19,210 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:44:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:44:19,594 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:44:19,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:44:19,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:44:19,595 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:44:19,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:44:19,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:44:19,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:44:19,597 INFO L87 Difference]: Start difference. First operand 4378 states and 6712 transitions. Second operand 6 states. [2018-10-27 08:44:25,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:44:25,266 INFO L93 Difference]: Finished difference Result 11002 states and 16943 transitions. [2018-10-27 08:44:25,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:44:25,268 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2018-10-27 08:44:25,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:44:25,308 INFO L225 Difference]: With dead ends: 11002 [2018-10-27 08:44:25,309 INFO L226 Difference]: Without dead ends: 6630 [2018-10-27 08:44:25,324 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:44:25,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2018-10-27 08:44:25,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6590. [2018-10-27 08:44:25,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-10-27 08:44:25,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 8773 transitions. [2018-10-27 08:44:25,487 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 8773 transitions. Word has length 147 [2018-10-27 08:44:25,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:44:25,488 INFO L481 AbstractCegarLoop]: Abstraction has 6590 states and 8773 transitions. [2018-10-27 08:44:25,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:44:25,488 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 8773 transitions. [2018-10-27 08:44:25,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-27 08:44:25,491 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:44:25,492 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:44:25,492 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:44:25,492 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:44:25,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1887894889, now seen corresponding path program 1 times [2018-10-27 08:44:25,493 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:44:25,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:44:25,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:44:25,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:44:25,494 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:44:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:44:25,726 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:44:25,726 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:44:25,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:44:25,727 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:44:25,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:44:25,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:44:25,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:44:25,729 INFO L87 Difference]: Start difference. First operand 6590 states and 8773 transitions. Second operand 4 states. [2018-10-27 08:44:32,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:44:32,096 INFO L93 Difference]: Finished difference Result 13174 states and 17554 transitions. [2018-10-27 08:44:32,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:44:32,097 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2018-10-27 08:44:32,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:44:32,126 INFO L225 Difference]: With dead ends: 13174 [2018-10-27 08:44:32,126 INFO L226 Difference]: Without dead ends: 6590 [2018-10-27 08:44:32,147 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:44:32,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6590 states. [2018-10-27 08:44:32,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6590 to 6590. [2018-10-27 08:44:32,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-10-27 08:44:32,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 8069 transitions. [2018-10-27 08:44:32,274 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 8069 transitions. Word has length 157 [2018-10-27 08:44:32,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:44:32,275 INFO L481 AbstractCegarLoop]: Abstraction has 6590 states and 8069 transitions. [2018-10-27 08:44:32,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:44:32,275 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 8069 transitions. [2018-10-27 08:44:32,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-27 08:44:32,278 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:44:32,279 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2018-10-27 08:44:32,279 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:44:32,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:44:32,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1024574149, now seen corresponding path program 1 times [2018-10-27 08:44:32,279 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:44:32,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:44:32,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:44:32,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:44:32,281 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:44:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:44:32,522 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-27 08:44:32,522 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:44:32,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:44:32,522 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:44:32,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:44:32,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:44:32,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:44:32,524 INFO L87 Difference]: Start difference. First operand 6590 states and 8069 transitions. Second operand 4 states. [2018-10-27 08:44:39,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:44:39,988 INFO L93 Difference]: Finished difference Result 26016 states and 32711 transitions. [2018-10-27 08:44:39,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:44:39,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 227 [2018-10-27 08:44:39,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:44:40,061 INFO L225 Difference]: With dead ends: 26016 [2018-10-27 08:44:40,062 INFO L226 Difference]: Without dead ends: 19432 [2018-10-27 08:44:40,083 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:44:40,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19432 states. [2018-10-27 08:44:40,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19432 to 19432. [2018-10-27 08:44:40,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19432 states. [2018-10-27 08:44:40,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19432 states to 19432 states and 23497 transitions. [2018-10-27 08:44:40,467 INFO L78 Accepts]: Start accepts. Automaton has 19432 states and 23497 transitions. Word has length 227 [2018-10-27 08:44:40,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:44:40,467 INFO L481 AbstractCegarLoop]: Abstraction has 19432 states and 23497 transitions. [2018-10-27 08:44:40,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:44:40,468 INFO L276 IsEmpty]: Start isEmpty. Operand 19432 states and 23497 transitions. [2018-10-27 08:44:40,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2018-10-27 08:44:40,511 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:44:40,512 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:44:40,512 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:44:40,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:44:40,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1794025893, now seen corresponding path program 1 times [2018-10-27 08:44:40,513 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:44:40,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:44:40,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:44:40,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:44:40,514 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:44:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:44:41,071 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:44:42,247 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 87 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:44:42,248 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:44:42,248 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:44:42,249 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 579 with the following transitions: [2018-10-27 08:44:42,252 INFO L202 CegarAbsIntRunner]: [0], [1], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [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], [1183], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1923], [1925], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-10-27 08:44:42,341 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:44:42,341 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:44:43,357 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:44:43,359 INFO L272 AbstractInterpreter]: Visited 407 different actions 407 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 08:44:43,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:44:43,402 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:44:44,526 INFO L227 lantSequenceWeakener]: Weakened 566 states. On average, predicates are now at 77.54% of their original sizes. [2018-10-27 08:44:44,526 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:44:45,049 INFO L415 sIntCurrentIteration]: We unified 577 AI predicates to 577 [2018-10-27 08:44:45,050 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:44:45,051 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:44:45,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2018-10-27 08:44:45,051 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:44:45,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 08:44:45,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 08:44:45,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:44:45,053 INFO L87 Difference]: Start difference. First operand 19432 states and 23497 transitions. Second operand 8 states. [2018-10-27 08:46:44,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:46:44,034 INFO L93 Difference]: Finished difference Result 39563 states and 47772 transitions. [2018-10-27 08:46:44,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 08:46:44,035 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 578 [2018-10-27 08:46:44,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:46:44,089 INFO L225 Difference]: With dead ends: 39563 [2018-10-27 08:46:44,090 INFO L226 Difference]: Without dead ends: 20137 [2018-10-27 08:46:44,125 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 579 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:46:44,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20137 states. [2018-10-27 08:46:44,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20137 to 20135. [2018-10-27 08:46:44,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20135 states. [2018-10-27 08:46:44,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20135 states to 20135 states and 24212 transitions. [2018-10-27 08:46:44,460 INFO L78 Accepts]: Start accepts. Automaton has 20135 states and 24212 transitions. Word has length 578 [2018-10-27 08:46:44,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:46:44,461 INFO L481 AbstractCegarLoop]: Abstraction has 20135 states and 24212 transitions. [2018-10-27 08:46:44,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 08:46:44,461 INFO L276 IsEmpty]: Start isEmpty. Operand 20135 states and 24212 transitions. [2018-10-27 08:46:44,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2018-10-27 08:46:44,510 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:46:44,511 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:46:44,511 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:46:44,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:46:44,512 INFO L82 PathProgramCache]: Analyzing trace with hash -324122114, now seen corresponding path program 1 times [2018-10-27 08:46:44,512 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:46:44,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:46:44,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:46:44,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:46:44,514 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:46:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:46:45,167 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 08:46:45,355 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 08:46:45,553 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 08:46:45,978 WARN L179 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-27 08:46:46,507 WARN L179 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-27 08:46:47,113 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 188 proven. 369 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:46:47,114 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:46:47,114 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:46:47,114 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 766 with the following transitions: [2018-10-27 08:46:47,115 INFO L202 CegarAbsIntRunner]: [0], [1], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [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], [1183], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1923], [1925], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-10-27 08:46:47,130 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:46:47,131 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:46:47,730 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:46:47,730 INFO L272 AbstractInterpreter]: Visited 411 different actions 815 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:46:47,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:46:47,738 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:46:48,653 INFO L227 lantSequenceWeakener]: Weakened 759 states. On average, predicates are now at 77.51% of their original sizes. [2018-10-27 08:46:48,653 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:46:49,595 INFO L415 sIntCurrentIteration]: We unified 764 AI predicates to 764 [2018-10-27 08:46:49,596 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:46:49,596 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:46:49,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 21 [2018-10-27 08:46:49,596 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:46:49,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-27 08:46:49,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-27 08:46:49,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-10-27 08:46:49,598 INFO L87 Difference]: Start difference. First operand 20135 states and 24212 transitions. Second operand 12 states. Received shutdown request... [2018-10-27 08:47:44,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-27 08:47:44,560 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 08:47:44,567 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 08:47:44,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:47:44 BoogieIcfgContainer [2018-10-27 08:47:44,567 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 08:47:44,568 INFO L168 Benchmark]: Toolchain (without parser) took 237711.36 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -139.3 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-27 08:47:44,570 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 08:47:44,570 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1706.95 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-27 08:47:44,571 INFO L168 Benchmark]: Boogie Procedure Inliner took 389.47 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 784.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -962.8 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-27 08:47:44,572 INFO L168 Benchmark]: Boogie Preprocessor took 198.98 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: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-10-27 08:47:44,573 INFO L168 Benchmark]: RCFGBuilder took 8484.89 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 513.8 MB). Peak memory consumption was 513.8 MB. Max. memory is 7.1 GB. [2018-10-27 08:47:44,574 INFO L168 Benchmark]: TraceAbstraction took 226925.72 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.5 GB in the end (delta: 147.8 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-27 08:47:44,579 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1706.95 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 389.47 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 784.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -962.8 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 198.98 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: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8484.89 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 513.8 MB). Peak memory consumption was 513.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226925.72 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.5 GB in the end (delta: 147.8 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 138]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 138). Cancelled while BasicCegarLoop was constructing difference of abstraction (20135states) and FLOYD_HOARE automaton (currently 22 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (24800 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 226.8s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 213.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3684 SDtfs, 14568 SDslu, 1788 SDs, 0 SdLazy, 28637 SolverSat, 5852 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 162.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 1392 GetRequests, 1339 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20135occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9986946458204125 AbsIntWeakeningRatio, 0.049217002237136466 AbsIntAvgWeakeningVarsNumRemoved, 16.651006711409394 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 77 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 2044 NumberOfCodeBlocks, 2044 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 2037 ConstructedInterpolants, 0 QuantifiedInterpolants, 4949414 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 565/1056 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown