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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label45_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:42:26,920 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:42:26,922 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:42:26,939 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:42:26,939 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:42:26,940 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:42:26,945 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:42:26,948 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:42:26,951 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:42:26,952 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:42:26,954 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:42:26,954 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:42:26,956 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:42:26,957 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:42:26,968 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:42:26,969 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:42:26,969 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:42:26,971 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:42:26,975 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:42:26,977 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:42:26,980 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:42:26,982 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:42:26,985 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:42:26,985 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:42:26,985 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:42:26,987 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:42:26,991 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:42:26,992 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:42:26,993 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:42:26,996 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:42:26,996 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:42:26,997 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 22:42:27,001 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-26 22:42:27,031 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:42:27,031 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:42:27,033 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:42:27,033 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 22:42:27,033 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 22:42:27,033 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 22:42:27,033 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 22:42:27,034 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 22:42:27,034 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 22:42:27,034 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 22:42:27,034 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 22:42:27,034 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 22:42:27,038 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:42:27,038 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:42:27,039 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:42:27,039 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:42:27,039 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:42:27,039 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:42:27,039 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:42:27,040 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:42:27,042 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:42:27,042 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:42:27,043 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:42:27,043 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:42:27,043 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:42:27,043 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:42:27,043 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:42:27,044 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:42:27,044 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 22:42:27,044 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:42:27,044 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:42:27,044 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:42:27,045 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 22:42:27,045 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 22:42:27,114 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:42:27,134 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:42:27,141 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:42:27,143 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:42:27,143 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:42:27,144 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label45_false-unreach-call_false-termination.c [2018-10-26 22:42:27,220 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1da964632/12f751b9899a4317acef4b8a74921d31/FLAG6dcc9182c [2018-10-26 22:42:27,778 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:42:27,779 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label45_false-unreach-call_false-termination.c [2018-10-26 22:42:27,797 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1da964632/12f751b9899a4317acef4b8a74921d31/FLAG6dcc9182c [2018-10-26 22:42:27,811 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1da964632/12f751b9899a4317acef4b8a74921d31 [2018-10-26 22:42:27,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:42:27,824 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:42:27,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:42:27,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:42:27,830 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:42:27,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:42:27" (1/1) ... [2018-10-26 22:42:27,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa98528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:27, skipping insertion in model container [2018-10-26 22:42:27,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:42:27" (1/1) ... [2018-10-26 22:42:27,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:42:27,901 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:42:28,360 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:42:28,365 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:42:28,493 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:42:28,530 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:42:28,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:28 WrapperNode [2018-10-26 22:42:28,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:42:28,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:42:28,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:42:28,532 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:42:28,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:28" (1/1) ... [2018-10-26 22:42:28,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:28" (1/1) ... [2018-10-26 22:42:28,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:42:28,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:42:28,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:42:28,783 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:42:28,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:28" (1/1) ... [2018-10-26 22:42:28,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:28" (1/1) ... [2018-10-26 22:42:28,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:28" (1/1) ... [2018-10-26 22:42:28,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:28" (1/1) ... [2018-10-26 22:42:28,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:28" (1/1) ... [2018-10-26 22:42:28,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:28" (1/1) ... [2018-10-26 22:42:28,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:28" (1/1) ... [2018-10-26 22:42:28,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:42:28,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:42:28,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:42:28,909 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:42:28,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:28" (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 [2018-10-26 22:42:28,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:42:28,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:42:28,985 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 22:42:28,986 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 22:42:28,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:42:28,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:42:28,986 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:42:28,986 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:42:32,343 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:42:32,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:42:32 BoogieIcfgContainer [2018-10-26 22:42:32,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:42:32,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:42:32,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:42:32,356 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:42:32,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:42:27" (1/3) ... [2018-10-26 22:42:32,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a637b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:42:32, skipping insertion in model container [2018-10-26 22:42:32,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:28" (2/3) ... [2018-10-26 22:42:32,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a637b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:42:32, skipping insertion in model container [2018-10-26 22:42:32,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:42:32" (3/3) ... [2018-10-26 22:42:32,360 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label45_false-unreach-call_false-termination.c [2018-10-26 22:42:32,371 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:42:32,381 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:42:32,397 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:42:32,434 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:42:32,434 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:42:32,435 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:42:32,435 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:42:32,435 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:42:32,435 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:42:32,435 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:42:32,436 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:42:32,464 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-26 22:42:32,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-26 22:42:32,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:42:32,477 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:42:32,480 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:42:32,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:42:32,487 INFO L82 PathProgramCache]: Analyzing trace with hash 865882407, now seen corresponding path program 1 times [2018-10-26 22:42:32,490 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:42:32,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:42:32,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:42:32,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:42:32,542 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:42:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:42:33,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:42:33,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:42:33,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:42:33,193 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:42:33,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:42:33,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:42:33,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:42:33,222 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-26 22:42:34,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:42:34,914 INFO L93 Difference]: Finished difference Result 621 states and 1059 transitions. [2018-10-26 22:42:34,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:42:34,917 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2018-10-26 22:42:34,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:42:34,936 INFO L225 Difference]: With dead ends: 621 [2018-10-26 22:42:34,937 INFO L226 Difference]: Without dead ends: 382 [2018-10-26 22:42:34,944 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:42:34,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-26 22:42:35,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-10-26 22:42:35,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-10-26 22:42:35,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 608 transitions. [2018-10-26 22:42:35,028 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 608 transitions. Word has length 89 [2018-10-26 22:42:35,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:42:35,029 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 608 transitions. [2018-10-26 22:42:35,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 22:42:35,030 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 608 transitions. [2018-10-26 22:42:35,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-26 22:42:35,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:42:35,040 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 22:42:35,041 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:42:35,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:42:35,041 INFO L82 PathProgramCache]: Analyzing trace with hash 277918394, now seen corresponding path program 1 times [2018-10-26 22:42:35,041 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:42:35,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:42:35,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:42:35,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:42:35,046 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:42:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:42:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:42:35,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:42:35,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:42:35,354 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:42:35,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:42:35,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:42:35,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:42:35,358 INFO L87 Difference]: Start difference. First operand 382 states and 608 transitions. Second operand 4 states. [2018-10-26 22:42:37,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:42:37,172 INFO L93 Difference]: Finished difference Result 1344 states and 2270 transitions. [2018-10-26 22:42:37,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:42:37,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2018-10-26 22:42:37,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:42:37,182 INFO L225 Difference]: With dead ends: 1344 [2018-10-26 22:42:37,183 INFO L226 Difference]: Without dead ends: 968 [2018-10-26 22:42:37,189 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 [2018-10-26 22:42:37,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2018-10-26 22:42:37,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 965. [2018-10-26 22:42:37,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2018-10-26 22:42:37,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1460 transitions. [2018-10-26 22:42:37,264 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1460 transitions. Word has length 98 [2018-10-26 22:42:37,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:42:37,265 INFO L481 AbstractCegarLoop]: Abstraction has 965 states and 1460 transitions. [2018-10-26 22:42:37,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:42:37,265 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1460 transitions. [2018-10-26 22:42:37,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-26 22:42:37,277 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:42:37,277 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 22:42:37,280 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:42:37,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:42:37,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1198681373, now seen corresponding path program 1 times [2018-10-26 22:42:37,280 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:42:37,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:42:37,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:42:37,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:42:37,282 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:42:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:42:37,520 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 22:42:37,592 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:42:37,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:42:37,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 22:42:37,593 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:42:37,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 22:42:37,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 22:42:37,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:42:37,594 INFO L87 Difference]: Start difference. First operand 965 states and 1460 transitions. Second operand 6 states. [2018-10-26 22:42:41,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:42:41,820 INFO L93 Difference]: Finished difference Result 2359 states and 3695 transitions. [2018-10-26 22:42:41,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 22:42:41,821 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-10-26 22:42:41,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:42:41,839 INFO L225 Difference]: With dead ends: 2359 [2018-10-26 22:42:41,840 INFO L226 Difference]: Without dead ends: 1400 [2018-10-26 22:42:41,848 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 [2018-10-26 22:42:41,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2018-10-26 22:42:41,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1376. [2018-10-26 22:42:41,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2018-10-26 22:42:41,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 2027 transitions. [2018-10-26 22:42:41,914 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 2027 transitions. Word has length 112 [2018-10-26 22:42:41,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:42:41,914 INFO L481 AbstractCegarLoop]: Abstraction has 1376 states and 2027 transitions. [2018-10-26 22:42:41,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 22:42:41,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 2027 transitions. [2018-10-26 22:42:41,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-26 22:42:41,919 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:42:41,919 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:42:41,919 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:42:41,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:42:41,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1692636065, now seen corresponding path program 1 times [2018-10-26 22:42:41,920 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:42:41,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:42:41,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:42:41,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:42:41,922 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:42:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:42:42,176 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:42:42,176 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:42:42,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-26 22:42:42,176 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:42:42,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 22:42:42,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 22:42:42,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-26 22:42:42,178 INFO L87 Difference]: Start difference. First operand 1376 states and 2027 transitions. Second operand 7 states. [2018-10-26 22:42:45,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:42:45,153 INFO L93 Difference]: Finished difference Result 3616 states and 5575 transitions. [2018-10-26 22:42:45,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-26 22:42:45,154 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2018-10-26 22:42:45,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:42:45,169 INFO L225 Difference]: With dead ends: 3616 [2018-10-26 22:42:45,169 INFO L226 Difference]: Without dead ends: 2246 [2018-10-26 22:42:45,179 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-10-26 22:42:45,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2018-10-26 22:42:45,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 2174. [2018-10-26 22:42:45,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2174 states. [2018-10-26 22:42:45,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 2874 transitions. [2018-10-26 22:42:45,254 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 2874 transitions. Word has length 114 [2018-10-26 22:42:45,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:42:45,255 INFO L481 AbstractCegarLoop]: Abstraction has 2174 states and 2874 transitions. [2018-10-26 22:42:45,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 22:42:45,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 2874 transitions. [2018-10-26 22:42:45,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-26 22:42:45,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:42:45,260 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:42:45,260 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:42:45,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:42:45,261 INFO L82 PathProgramCache]: Analyzing trace with hash -387464135, now seen corresponding path program 1 times [2018-10-26 22:42:45,261 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:42:45,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:42:45,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:42:45,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:42:45,262 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:42:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:42:45,496 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:42:45,497 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:42:45,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 22:42:45,497 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:42:45,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 22:42:45,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 22:42:45,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:42:45,498 INFO L87 Difference]: Start difference. First operand 2174 states and 2874 transitions. Second operand 6 states. [2018-10-26 22:42:47,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:42:47,586 INFO L93 Difference]: Finished difference Result 6259 states and 8687 transitions. [2018-10-26 22:42:47,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 22:42:47,586 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-10-26 22:42:47,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:42:47,614 INFO L225 Difference]: With dead ends: 6259 [2018-10-26 22:42:47,614 INFO L226 Difference]: Without dead ends: 4091 [2018-10-26 22:42:47,631 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-26 22:42:47,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4091 states. [2018-10-26 22:42:47,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4091 to 3972. [2018-10-26 22:42:47,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3972 states. [2018-10-26 22:42:47,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3972 states to 3972 states and 4946 transitions. [2018-10-26 22:42:47,748 INFO L78 Accepts]: Start accepts. Automaton has 3972 states and 4946 transitions. Word has length 121 [2018-10-26 22:42:47,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:42:47,748 INFO L481 AbstractCegarLoop]: Abstraction has 3972 states and 4946 transitions. [2018-10-26 22:42:47,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 22:42:47,748 INFO L276 IsEmpty]: Start isEmpty. Operand 3972 states and 4946 transitions. [2018-10-26 22:42:47,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-26 22:42:47,756 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:42:47,756 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:42:47,756 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:42:47,757 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:42:47,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1209015306, now seen corresponding path program 1 times [2018-10-26 22:42:47,757 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:42:47,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:42:47,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:42:47,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:42:47,758 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:42:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:42:48,061 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:42:48,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:42:48,062 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 22:42:48,063 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 127 with the following transitions: [2018-10-26 22:42:48,065 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [53], [64], [68], [72], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [383], [385], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-26 22:42:48,128 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 22:42:48,129 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 22:43:58,730 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 22:43:58,732 INFO L272 AbstractInterpreter]: Visited 93 different actions 360 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 38 variables. [2018-10-26 22:43:58,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:43:58,744 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 22:44:03,861 INFO L227 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 91.67% of their original sizes. [2018-10-26 22:44:03,861 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-26 22:46:53,109 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 22:46:53,114 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 22:46:53,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:46:53 BoogieIcfgContainer [2018-10-26 22:46:53,115 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:46:53,115 INFO L168 Benchmark]: Toolchain (without parser) took 265292.19 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.3 GB). Peak memory consumption was 746.1 MB. Max. memory is 7.1 GB. [2018-10-26 22:46:53,117 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-10-26 22:46:53,117 INFO L168 Benchmark]: CACSL2BoogieTranslator took 706.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-26 22:46:53,118 INFO L168 Benchmark]: Boogie Procedure Inliner took 249.96 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -840.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-10-26 22:46:53,119 INFO L168 Benchmark]: Boogie Preprocessor took 125.54 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 22:46:53,120 INFO L168 Benchmark]: RCFGBuilder took 3435.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 106.9 MB). Peak memory consumption was 106.9 MB. Max. memory is 7.1 GB. [2018-10-26 22:46:53,121 INFO L168 Benchmark]: TraceAbstraction took 260769.65 ms. Allocated memory was 2.3 GB in the beginning and 3.6 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -640.9 MB). Peak memory consumption was 679.8 MB. Max. memory is 7.1 GB. [2018-10-26 22:46:53,127 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 706.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 249.96 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -840.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.54 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3435.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 106.9 MB). Peak memory consumption was 106.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 260769.65 ms. Allocated memory was 2.3 GB in the beginning and 3.6 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -640.9 MB). Peak memory consumption was 679.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 418]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 418). Cancelled while BasicCegarLoop was analyzing trace of length 127 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 260.6s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 12.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 631 SDtfs, 3295 SDslu, 695 SDs, 0 SdLazy, 4444 SolverSat, 1136 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3972occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 70.6s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9925917496443809 AbsIntWeakeningRatio, 0.264 AbsIntAvgWeakeningVarsNumRemoved, 1501.752 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 218 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 534 NumberOfCodeBlocks, 534 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 529 ConstructedInterpolants, 0 QuantifiedInterpolants, 176714 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 77/77 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown