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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:11:30,980 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:11:30,982 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:11:30,995 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:11:30,996 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:11:30,997 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:11:30,998 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:11:31,003 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:11:31,004 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:11:31,006 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:11:31,007 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:11:31,007 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:11:31,010 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:11:31,013 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:11:31,021 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:11:31,022 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:11:31,023 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:11:31,027 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:11:31,030 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:11:31,032 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:11:31,033 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:11:31,036 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:11:31,039 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 03:11:31,046 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:11:31,047 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:11:31,047 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:11:31,049 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:11:31,049 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:11:31,069 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:11:31,070 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:11:31,070 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:11:31,071 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:11:31,071 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:11:31,071 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:11:31,071 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:11:31,071 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:11:31,072 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:11:31,072 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:11:31,072 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:11:31,072 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:11:31,073 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:11:31,073 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:11:31,073 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:11:31,074 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:11:31,074 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:11:31,074 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:11:31,074 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:11:31,074 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:11:31,075 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:11:31,075 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:11:31,075 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:11:31,075 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:11:31,075 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:11:31,076 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:11:31,076 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:11:31,076 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:11:31,076 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:11:31,076 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:11:31,077 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:11:31,077 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:11:31,077 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:11:31,077 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:11:31,123 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:11:31,141 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:11:31,146 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:11:31,148 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:11:31,148 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:11:31,149 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label49_true-unreach-call.c [2018-11-07 03:11:31,215 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d005ba0fd/70307d926a15444ba07a7e76a59f2a8e/FLAG2b17481f9 [2018-11-07 03:11:31,992 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:11:31,993 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label49_true-unreach-call.c [2018-11-07 03:11:32,023 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d005ba0fd/70307d926a15444ba07a7e76a59f2a8e/FLAG2b17481f9 [2018-11-07 03:11:32,039 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d005ba0fd/70307d926a15444ba07a7e76a59f2a8e [2018-11-07 03:11:32,051 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:11:32,052 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:11:32,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:11:32,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:11:32,058 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:11:32,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:11:32" (1/1) ... [2018-11-07 03:11:32,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a760589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:32, skipping insertion in model container [2018-11-07 03:11:32,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:11:32" (1/1) ... [2018-11-07 03:11:32,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:11:32,243 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:11:33,610 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:11:33,616 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:11:34,259 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:11:34,294 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:11:34,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:34 WrapperNode [2018-11-07 03:11:34,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:11:34,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:11:34,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:11:34,297 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:11:34,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:34" (1/1) ... [2018-11-07 03:11:34,616 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:34" (1/1) ... [2018-11-07 03:11:34,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:11:34,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:11:34,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:11:34,628 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:11:34,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:34" (1/1) ... [2018-11-07 03:11:34,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:34" (1/1) ... [2018-11-07 03:11:34,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:34" (1/1) ... [2018-11-07 03:11:34,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:34" (1/1) ... [2018-11-07 03:11:34,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:34" (1/1) ... [2018-11-07 03:11:34,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:34" (1/1) ... [2018-11-07 03:11:34,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:34" (1/1) ... [2018-11-07 03:11:34,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:11:34,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:11:34,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:11:34,855 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:11:34,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:34" (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 03:11:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:11:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:11:34,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:11:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 03:11:34,924 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 03:11:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 03:11:34,924 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 03:11:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:11:34,924 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:11:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:11:34,925 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:11:34,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:11:34,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:11:34,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:11:34,926 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:11:44,742 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:11:44,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:11:44 BoogieIcfgContainer [2018-11-07 03:11:44,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:11:44,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:11:44,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:11:44,748 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:11:44,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:11:32" (1/3) ... [2018-11-07 03:11:44,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659ccf5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:11:44, skipping insertion in model container [2018-11-07 03:11:44,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:34" (2/3) ... [2018-11-07 03:11:44,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659ccf5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:11:44, skipping insertion in model container [2018-11-07 03:11:44,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:11:44" (3/3) ... [2018-11-07 03:11:44,751 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label49_true-unreach-call.c [2018-11-07 03:11:44,761 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:11:44,770 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:11:44,786 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:11:44,831 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:11:44,832 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:11:44,832 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:11:44,832 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:11:44,832 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:11:44,832 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:11:44,832 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:11:44,833 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:11:44,881 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 03:11:44,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-07 03:11:44,892 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:11:44,893 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] [2018-11-07 03:11:44,895 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:11:44,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:11:44,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1466253757, now seen corresponding path program 1 times [2018-11-07 03:11:44,903 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:11:44,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:11:44,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:11:44,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:11:44,952 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:11:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:11:45,383 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:11:45,514 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 03:11:45,516 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:11:45,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 03:11:45,517 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:11:45,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 03:11:45,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 03:11:45,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:11:45,543 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 03:11:53,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:11:53,148 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 03:11:53,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 03:11:53,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2018-11-07 03:11:53,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:11:53,185 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 03:11:53,186 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 03:11:53,197 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:11:53,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 03:11:53,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 03:11:53,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 03:11:53,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-11-07 03:11:53,383 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 49 [2018-11-07 03:11:53,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:11:53,384 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-11-07 03:11:53,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 03:11:53,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-11-07 03:11:53,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-11-07 03:11:53,403 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:11:53,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:11:53,405 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:11:53,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:11:53,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1490932028, now seen corresponding path program 1 times [2018-11-07 03:11:53,406 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:11:53,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:11:53,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:11:53,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:11:53,408 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:11:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:11:53,941 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:11:53,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:11:53,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:11:53,942 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:11:53,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:11:53,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:11:53,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:11:53,945 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 6 states. [2018-11-07 03:12:08,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:12:08,498 INFO L93 Difference]: Finished difference Result 6330 states and 12128 transitions. [2018-11-07 03:12:08,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:12:08,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-11-07 03:12:08,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:12:08,540 INFO L225 Difference]: With dead ends: 6330 [2018-11-07 03:12:08,540 INFO L226 Difference]: Without dead ends: 4732 [2018-11-07 03:12:08,551 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:12:08,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2018-11-07 03:12:08,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4700. [2018-11-07 03:12:08,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4700 states. [2018-11-07 03:12:08,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 7674 transitions. [2018-11-07 03:12:08,695 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 7674 transitions. Word has length 127 [2018-11-07 03:12:08,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:12:08,696 INFO L480 AbstractCegarLoop]: Abstraction has 4700 states and 7674 transitions. [2018-11-07 03:12:08,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:12:08,696 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 7674 transitions. [2018-11-07 03:12:08,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-07 03:12:08,707 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:12:08,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:12:08,708 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:12:08,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:12:08,709 INFO L82 PathProgramCache]: Analyzing trace with hash -729393447, now seen corresponding path program 1 times [2018-11-07 03:12:08,709 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:12:08,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:12:08,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:12:08,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:12:08,711 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:12:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:12:08,947 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:12:08,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:12:08,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:12:08,948 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:12:08,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:12:08,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:12:08,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:12:08,949 INFO L87 Difference]: Start difference. First operand 4700 states and 7674 transitions. Second operand 5 states. [2018-11-07 03:12:16,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:12:16,685 INFO L93 Difference]: Finished difference Result 14303 states and 23676 transitions. [2018-11-07 03:12:16,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 03:12:16,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-11-07 03:12:16,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:12:16,737 INFO L225 Difference]: With dead ends: 14303 [2018-11-07 03:12:16,737 INFO L226 Difference]: Without dead ends: 9609 [2018-11-07 03:12:16,753 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:12:16,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9609 states. [2018-11-07 03:12:17,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9609 to 9527. [2018-11-07 03:12:17,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9527 states. [2018-11-07 03:12:17,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9527 states to 9527 states and 14359 transitions. [2018-11-07 03:12:17,037 INFO L78 Accepts]: Start accepts. Automaton has 9527 states and 14359 transitions. Word has length 130 [2018-11-07 03:12:17,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:12:17,037 INFO L480 AbstractCegarLoop]: Abstraction has 9527 states and 14359 transitions. [2018-11-07 03:12:17,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:12:17,038 INFO L276 IsEmpty]: Start isEmpty. Operand 9527 states and 14359 transitions. [2018-11-07 03:12:17,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-11-07 03:12:17,042 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:12:17,042 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:12:17,043 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:12:17,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:12:17,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1452508056, now seen corresponding path program 1 times [2018-11-07 03:12:17,043 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:12:17,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:12:17,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:12:17,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:12:17,046 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:12:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:12:17,510 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:12:17,511 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:12:17,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:12:17,511 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:12:17,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:12:17,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:12:17,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:12:17,513 INFO L87 Difference]: Start difference. First operand 9527 states and 14359 transitions. Second operand 6 states. [2018-11-07 03:12:31,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:12:31,981 INFO L93 Difference]: Finished difference Result 38604 states and 63778 transitions. [2018-11-07 03:12:31,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 03:12:31,984 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-11-07 03:12:31,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:12:32,170 INFO L225 Difference]: With dead ends: 38604 [2018-11-07 03:12:32,171 INFO L226 Difference]: Without dead ends: 29083 [2018-11-07 03:12:32,279 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 03:12:32,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29083 states. [2018-11-07 03:12:33,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29083 to 28884. [2018-11-07 03:12:33,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28884 states. [2018-11-07 03:12:33,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28884 states to 28884 states and 42392 transitions. [2018-11-07 03:12:33,180 INFO L78 Accepts]: Start accepts. Automaton has 28884 states and 42392 transitions. Word has length 153 [2018-11-07 03:12:33,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:12:33,181 INFO L480 AbstractCegarLoop]: Abstraction has 28884 states and 42392 transitions. [2018-11-07 03:12:33,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:12:33,181 INFO L276 IsEmpty]: Start isEmpty. Operand 28884 states and 42392 transitions. [2018-11-07 03:12:33,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-11-07 03:12:33,186 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:12:33,186 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:12:33,186 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:12:33,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:12:33,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1417457295, now seen corresponding path program 1 times [2018-11-07 03:12:33,187 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:12:33,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:12:33,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:12:33,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:12:33,188 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:12:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:12:33,500 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:12:33,944 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:12:33,944 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:12:33,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:12:33,945 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:12:33,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:12:33,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:12:33,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:12:33,946 INFO L87 Difference]: Start difference. First operand 28884 states and 42392 transitions. Second operand 6 states. [2018-11-07 03:12:44,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:12:44,870 INFO L93 Difference]: Finished difference Result 77283 states and 121529 transitions. [2018-11-07 03:12:44,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:12:44,874 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2018-11-07 03:12:44,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:12:45,112 INFO L225 Difference]: With dead ends: 77283 [2018-11-07 03:12:45,112 INFO L226 Difference]: Without dead ends: 48405 [2018-11-07 03:12:45,516 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:12:45,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48405 states. [2018-11-07 03:12:46,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48405 to 48175. [2018-11-07 03:12:46,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48175 states. [2018-11-07 03:12:46,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48175 states to 48175 states and 68300 transitions. [2018-11-07 03:12:46,633 INFO L78 Accepts]: Start accepts. Automaton has 48175 states and 68300 transitions. Word has length 174 [2018-11-07 03:12:46,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:12:46,634 INFO L480 AbstractCegarLoop]: Abstraction has 48175 states and 68300 transitions. [2018-11-07 03:12:46,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:12:46,634 INFO L276 IsEmpty]: Start isEmpty. Operand 48175 states and 68300 transitions. [2018-11-07 03:12:46,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-11-07 03:12:46,647 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:12:46,648 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:12:46,648 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:12:46,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:12:46,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1734956816, now seen corresponding path program 1 times [2018-11-07 03:12:46,648 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:12:46,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:12:46,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:12:46,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:12:46,650 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:12:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:12:46,927 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:12:47,163 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 84 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 03:12:47,163 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:12:47,164 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:12:47,165 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 245 with the following transitions: [2018-11-07 03:12:47,167 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2159], [2161], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2404], [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], [2536], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 03:12:47,241 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:12:47,242 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:12:51,645 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:12:53,072 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:12:53,074 INFO L272 AbstractInterpreter]: Visited 119 different actions 119 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 03:12:53,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:12:53,118 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:12:55,951 INFO L227 lantSequenceWeakener]: Weakened 236 states. On average, predicates are now at 75.58% of their original sizes. [2018-11-07 03:12:55,952 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:12:56,603 INFO L415 sIntCurrentIteration]: We unified 243 AI predicates to 243 [2018-11-07 03:12:56,603 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:12:56,604 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:12:56,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-11-07 03:12:56,605 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:12:56,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 03:12:56,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 03:12:56,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:12:56,606 INFO L87 Difference]: Start difference. First operand 48175 states and 68300 transitions. Second operand 8 states. Received shutdown request... [2018-11-07 03:14:56,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 03:14:56,400 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:14:56,406 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:14:56,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:14:56 BoogieIcfgContainer [2018-11-07 03:14:56,406 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:14:56,407 INFO L168 Benchmark]: Toolchain (without parser) took 204355.96 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 132.9 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-07 03:14:56,409 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-11-07 03:14:56,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2242.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-07 03:14:56,410 INFO L168 Benchmark]: Boogie Procedure Inliner took 330.96 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2018-11-07 03:14:56,411 INFO L168 Benchmark]: Boogie Preprocessor took 226.59 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2018-11-07 03:14:56,412 INFO L168 Benchmark]: RCFGBuilder took 9888.65 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 155.7 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -162.6 MB). Peak memory consumption was 665.0 MB. Max. memory is 7.1 GB. [2018-11-07 03:14:56,413 INFO L168 Benchmark]: TraceAbstraction took 191662.34 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-11-07 03:14:56,419 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2242.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 330.96 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 226.59 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9888.65 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 155.7 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -162.6 MB). Peak memory consumption was 665.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 191662.34 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Peak memory consumption was 2.9 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 (48175states) and FLOYD_HOARE automaton (currently 8 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (19981 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 191.5s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 176.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 992 SDtfs, 16026 SDslu, 1184 SDs, 0 SdLazy, 29864 SolverSat, 6299 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 132.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 289 GetRequests, 250 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48175occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9960113960113959 AbsIntWeakeningRatio, 0.1111111111111111 AbsIntAvgWeakeningVarsNumRemoved, 1050.7078189300412 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 543 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 877 NumberOfCodeBlocks, 877 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 871 ConstructedInterpolants, 0 QuantifiedInterpolants, 614575 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 257/333 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown