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/Problem15_label58_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:48:40,980 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:48:40,985 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:48:41,004 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:48:41,005 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:48:41,006 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:48:41,007 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:48:41,012 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:48:41,014 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:48:41,016 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:48:41,017 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:48:41,017 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:48:41,020 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:48:41,021 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:48:41,022 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:48:41,023 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:48:41,024 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:48:41,026 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:48:41,028 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:48:41,029 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:48:41,030 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:48:41,032 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:48:41,034 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 01:48:41,035 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 01:48:41,035 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 01:48:41,036 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 01:48:41,037 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 01:48:41,038 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 01:48:41,038 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 01:48:41,040 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 01:48:41,040 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 01:48:41,041 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 01:48:41,041 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 01:48:41,041 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 01:48:41,042 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 01:48:41,043 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 01:48:41,043 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 [2018-10-24 01:48:41,071 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:48:41,072 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:48:41,072 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:48:41,073 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:48:41,073 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:48:41,073 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:48:41,073 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:48:41,074 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:48:41,074 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:48:41,074 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:48:41,074 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:48:41,074 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:48:41,075 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:48:41,075 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:48:41,075 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:48:41,076 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:48:41,077 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:48:41,077 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:48:41,077 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:48:41,077 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:48:41,077 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:48:41,078 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:48:41,078 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:48:41,078 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:48:41,078 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:48:41,078 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:48:41,079 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:48:41,079 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:48:41,079 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:48:41,080 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:48:41,080 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:48:41,080 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:48:41,080 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:48:41,080 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:48:41,148 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:48:41,166 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:48:41,169 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:48:41,170 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:48:41,171 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:48:41,172 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label58_true-unreach-call.c [2018-10-24 01:48:41,232 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/08dd23a99/7634029acd814bdfb088a259a9b898ee/FLAG2d3a02dab [2018-10-24 01:48:41,987 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:48:41,988 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label58_true-unreach-call.c [2018-10-24 01:48:42,016 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/08dd23a99/7634029acd814bdfb088a259a9b898ee/FLAG2d3a02dab [2018-10-24 01:48:42,039 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/08dd23a99/7634029acd814bdfb088a259a9b898ee [2018-10-24 01:48:42,051 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:48:42,053 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:48:42,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:48:42,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:48:42,058 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:48:42,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:48:42" (1/1) ... [2018-10-24 01:48:42,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b467fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:42, skipping insertion in model container [2018-10-24 01:48:42,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:48:42" (1/1) ... [2018-10-24 01:48:42,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:48:42,164 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:48:42,999 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:48:43,004 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:48:43,278 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:48:43,300 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:48:43,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:43 WrapperNode [2018-10-24 01:48:43,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:48:43,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:48:43,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:48:43,302 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:48:43,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:43" (1/1) ... [2018-10-24 01:48:43,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:43" (1/1) ... [2018-10-24 01:48:43,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:48:43,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:48:43,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:48:43,721 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:48:43,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:43" (1/1) ... [2018-10-24 01:48:43,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:43" (1/1) ... [2018-10-24 01:48:43,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:43" (1/1) ... [2018-10-24 01:48:43,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:43" (1/1) ... [2018-10-24 01:48:43,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:43" (1/1) ... [2018-10-24 01:48:43,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:43" (1/1) ... [2018-10-24 01:48:43,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:43" (1/1) ... [2018-10-24 01:48:43,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:48:43,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:48:43,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:48:43,957 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:48:43,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:43" (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 [2018-10-24 01:48:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:48:44,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:48:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 01:48:44,032 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 01:48:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:48:44,033 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:48:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:48:44,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:48:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:48:44,034 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:48:51,695 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:48:51,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:48:51 BoogieIcfgContainer [2018-10-24 01:48:51,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:48:51,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:48:51,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:48:51,700 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:48:51,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:48:42" (1/3) ... [2018-10-24 01:48:51,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5fc91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:48:51, skipping insertion in model container [2018-10-24 01:48:51,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:48:43" (2/3) ... [2018-10-24 01:48:51,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5fc91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:48:51, skipping insertion in model container [2018-10-24 01:48:51,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:48:51" (3/3) ... [2018-10-24 01:48:51,704 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label58_true-unreach-call.c [2018-10-24 01:48:51,713 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:48:51,722 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:48:51,740 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:48:51,781 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:48:51,782 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:48:51,782 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:48:51,782 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:48:51,782 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:48:51,783 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:48:51,783 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:48:51,783 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:48:51,820 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 01:48:51,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-24 01:48:51,830 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:48:51,831 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] [2018-10-24 01:48:51,834 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:48:51,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:48:51,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1265036959, now seen corresponding path program 1 times [2018-10-24 01:48:51,842 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:48:51,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:48:51,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:48:51,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:48:51,900 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:48:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:48:52,432 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-24 01:48:52,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:48:52,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:48:52,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:48:52,454 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:48:52,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:48:52,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:48:52,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:48:52,479 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-24 01:49:02,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:49:02,697 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-10-24 01:49:02,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:49:02,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-10-24 01:49:02,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:49:02,733 INFO L225 Difference]: With dead ends: 1558 [2018-10-24 01:49:02,733 INFO L226 Difference]: Without dead ends: 1114 [2018-10-24 01:49:02,743 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:49:02,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-10-24 01:49:02,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1091. [2018-10-24 01:49:02,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2018-10-24 01:49:02,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1853 transitions. [2018-10-24 01:49:02,936 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1853 transitions. Word has length 57 [2018-10-24 01:49:02,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:49:02,937 INFO L481 AbstractCegarLoop]: Abstraction has 1091 states and 1853 transitions. [2018-10-24 01:49:02,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:49:02,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1853 transitions. [2018-10-24 01:49:02,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-24 01:49:02,959 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:49:02,959 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:49:02,961 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:49:02,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:49:02,962 INFO L82 PathProgramCache]: Analyzing trace with hash 569089420, now seen corresponding path program 1 times [2018-10-24 01:49:02,962 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:49:02,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:49:02,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:49:02,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:49:02,965 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:49:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:49:03,323 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:49:03,324 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:49:03,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:49:03,324 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:49:03,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:49:03,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:49:03,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:49:03,327 INFO L87 Difference]: Start difference. First operand 1091 states and 1853 transitions. Second operand 5 states. [2018-10-24 01:49:16,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:49:16,478 INFO L93 Difference]: Finished difference Result 3240 states and 5580 transitions. [2018-10-24 01:49:16,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:49:16,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-10-24 01:49:16,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:49:16,499 INFO L225 Difference]: With dead ends: 3240 [2018-10-24 01:49:16,500 INFO L226 Difference]: Without dead ends: 2155 [2018-10-24 01:49:16,507 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:49:16,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2018-10-24 01:49:16,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 2114. [2018-10-24 01:49:16,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2018-10-24 01:49:16,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3176 transitions. [2018-10-24 01:49:16,599 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3176 transitions. Word has length 130 [2018-10-24 01:49:16,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:49:16,600 INFO L481 AbstractCegarLoop]: Abstraction has 2114 states and 3176 transitions. [2018-10-24 01:49:16,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:49:16,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3176 transitions. [2018-10-24 01:49:16,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-24 01:49:16,603 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:49:16,604 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:49:16,604 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:49:16,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:49:16,604 INFO L82 PathProgramCache]: Analyzing trace with hash 139406748, now seen corresponding path program 1 times [2018-10-24 01:49:16,604 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:49:16,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:49:16,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:49:16,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:49:16,608 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:49:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:49:16,879 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:49:16,879 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:49:16,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:49:16,880 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:49:16,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:49:16,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:49:16,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:49:16,881 INFO L87 Difference]: Start difference. First operand 2114 states and 3176 transitions. Second operand 4 states. [2018-10-24 01:49:22,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:49:22,602 INFO L93 Difference]: Finished difference Result 7943 states and 12452 transitions. [2018-10-24 01:49:22,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:49:22,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2018-10-24 01:49:22,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:49:22,652 INFO L225 Difference]: With dead ends: 7943 [2018-10-24 01:49:22,652 INFO L226 Difference]: Without dead ends: 5835 [2018-10-24 01:49:22,679 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 [2018-10-24 01:49:22,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5835 states. [2018-10-24 01:49:22,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5835 to 5835. [2018-10-24 01:49:22,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5835 states. [2018-10-24 01:49:22,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5835 states to 5835 states and 8168 transitions. [2018-10-24 01:49:22,870 INFO L78 Accepts]: Start accepts. Automaton has 5835 states and 8168 transitions. Word has length 138 [2018-10-24 01:49:22,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:49:22,871 INFO L481 AbstractCegarLoop]: Abstraction has 5835 states and 8168 transitions. [2018-10-24 01:49:22,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:49:22,871 INFO L276 IsEmpty]: Start isEmpty. Operand 5835 states and 8168 transitions. [2018-10-24 01:49:22,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-24 01:49:22,883 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:49:22,884 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:49:22,885 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:49:22,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:49:22,886 INFO L82 PathProgramCache]: Analyzing trace with hash -23603164, now seen corresponding path program 1 times [2018-10-24 01:49:22,886 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:49:22,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:49:22,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:49:22,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:49:22,887 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:49:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:49:23,275 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:49:23,440 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:49:23,440 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:49:23,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:49:23,441 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:49:23,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:49:23,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:49:23,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:49:23,442 INFO L87 Difference]: Start difference. First operand 5835 states and 8168 transitions. Second operand 6 states. [2018-10-24 01:49:32,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:49:32,066 INFO L93 Difference]: Finished difference Result 15461 states and 22492 transitions. [2018-10-24 01:49:32,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:49:32,067 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 226 [2018-10-24 01:49:32,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:49:32,123 INFO L225 Difference]: With dead ends: 15461 [2018-10-24 01:49:32,124 INFO L226 Difference]: Without dead ends: 9632 [2018-10-24 01:49:32,180 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 [2018-10-24 01:49:32,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9632 states. [2018-10-24 01:49:32,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9632 to 9593. [2018-10-24 01:49:32,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9593 states. [2018-10-24 01:49:32,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9593 states to 9593 states and 13021 transitions. [2018-10-24 01:49:32,453 INFO L78 Accepts]: Start accepts. Automaton has 9593 states and 13021 transitions. Word has length 226 [2018-10-24 01:49:32,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:49:32,454 INFO L481 AbstractCegarLoop]: Abstraction has 9593 states and 13021 transitions. [2018-10-24 01:49:32,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:49:32,454 INFO L276 IsEmpty]: Start isEmpty. Operand 9593 states and 13021 transitions. [2018-10-24 01:49:32,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-24 01:49:32,472 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:49:32,473 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:49:32,473 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:49:32,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:49:32,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1826308229, now seen corresponding path program 1 times [2018-10-24 01:49:32,474 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:49:32,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:49:32,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:49:32,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:49:32,476 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:49:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:49:32,791 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:49:33,066 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 100 proven. 78 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 01:49:33,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:49:33,067 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:49:33,068 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 228 with the following transitions: [2018-10-24 01:49:33,070 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [625], [626], [630], [633], [638], [640], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 01:49:33,140 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:49:33,141 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:49:34,768 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:49:34,769 INFO L272 AbstractInterpreter]: Visited 90 different actions 90 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 01:49:34,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:49:34,781 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:49:36,780 INFO L232 lantSequenceWeakener]: Weakened 217 states. On average, predicates are now at 78.18% of their original sizes. [2018-10-24 01:49:36,780 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:49:37,188 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:49:37,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:49:37,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 01:49:37,192 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:49:37,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 01:49:37,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 01:49:37,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 01:49:37,194 INFO L87 Difference]: Start difference. First operand 9593 states and 13021 transitions. Second operand 7 states. [2018-10-24 01:49:40,772 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:51:00,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:51:00,805 INFO L93 Difference]: Finished difference Result 19490 states and 26411 transitions. [2018-10-24 01:51:00,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:51:00,805 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2018-10-24 01:51:00,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:51:00,851 INFO L225 Difference]: With dead ends: 19490 [2018-10-24 01:51:00,851 INFO L226 Difference]: Without dead ends: 9903 [2018-10-24 01:51:00,882 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 227 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:51:00,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9903 states. [2018-10-24 01:51:01,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9903 to 9901. [2018-10-24 01:51:01,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9901 states. [2018-10-24 01:51:01,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9901 states to 9901 states and 13338 transitions. [2018-10-24 01:51:01,342 INFO L78 Accepts]: Start accepts. Automaton has 9901 states and 13338 transitions. Word has length 227 [2018-10-24 01:51:01,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:51:01,343 INFO L481 AbstractCegarLoop]: Abstraction has 9901 states and 13338 transitions. [2018-10-24 01:51:01,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 01:51:01,343 INFO L276 IsEmpty]: Start isEmpty. Operand 9901 states and 13338 transitions. [2018-10-24 01:51:01,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-10-24 01:51:01,365 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:51:01,366 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 01:51:01,366 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:51:01,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:51:01,367 INFO L82 PathProgramCache]: Analyzing trace with hash 2005617649, now seen corresponding path program 1 times [2018-10-24 01:51:01,367 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:51:01,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:51:01,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:51:01,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:51:01,369 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:51:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:51:01,710 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:51:02,057 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 156 proven. 227 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 01:51:02,058 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:51:02,058 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:51:02,058 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 324 with the following transitions: [2018-10-24 01:51:02,059 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [625], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 01:51:02,064 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:51:02,065 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:51:03,342 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:51:08,544 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:51:08,544 INFO L272 AbstractInterpreter]: Visited 105 different actions 302 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 01:51:08,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:51:08,551 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:51:11,459 INFO L232 lantSequenceWeakener]: Weakened 63 states. On average, predicates are now at 78.21% of their original sizes. [2018-10-24 01:51:11,459 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 01:52:35,336 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:52:35,340 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:52:35,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:52:35 BoogieIcfgContainer [2018-10-24 01:52:35,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:52:35,342 INFO L168 Benchmark]: Toolchain (without parser) took 233290.22 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.8 GB). Peak memory consumption was 780.7 MB. Max. memory is 7.1 GB. [2018-10-24 01:52:35,344 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-10-24 01:52:35,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1247.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-24 01:52:35,345 INFO L168 Benchmark]: Boogie Procedure Inliner took 418.45 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -885.1 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-24 01:52:35,346 INFO L168 Benchmark]: Boogie Preprocessor took 235.42 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-10-24 01:52:35,347 INFO L168 Benchmark]: RCFGBuilder took 7739.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 312.7 MB). Peak memory consumption was 312.7 MB. Max. memory is 7.1 GB. [2018-10-24 01:52:35,348 INFO L168 Benchmark]: TraceAbstraction took 223644.24 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.3 GB in the end (delta: -1.4 GB). Peak memory consumption was 471.9 MB. Max. memory is 7.1 GB. [2018-10-24 01:52:35,362 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 1247.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 418.45 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -885.1 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 235.42 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7739.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 312.7 MB). Peak memory consumption was 312.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223644.24 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.3 GB in the end (delta: -1.4 GB). Peak memory consumption was 471.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 157]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 157). Cancelled while BasicCegarLoop was analyzing trace of length 324 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 16 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 223.5s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 121.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1333 SDtfs, 5098 SDslu, 1245 SDs, 0 SdLazy, 9653 SolverSat, 2438 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 82.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 257 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9901occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.2s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9956991166825346 AbsIntWeakeningRatio, 0.10948905109489052 AbsIntAvgWeakeningVarsNumRemoved, 607.1350364963504 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 105 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 778 NumberOfCodeBlocks, 778 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 773 ConstructedInterpolants, 0 QuantifiedInterpolants, 568524 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 255/333 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown