java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label13_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:38:39,872 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:38:39,876 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:38:39,891 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:38:39,891 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:38:39,893 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:38:39,896 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:38:39,899 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:38:39,901 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:38:39,902 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:38:39,905 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:38:39,905 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:38:39,907 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:38:39,908 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:38:39,911 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:38:39,912 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:38:39,913 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:38:39,916 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:38:39,925 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:38:39,930 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:38:39,932 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:38:39,933 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:38:39,937 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:38:39,938 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:38:39,938 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:38:39,939 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:38:39,940 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:38:39,941 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:38:39,944 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:38:39,946 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:38:39,946 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:38:39,946 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:38:39,947 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:38:39,947 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:38:39,949 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:38:39,951 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:38:39,952 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 19:38:39,977 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:38:39,978 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:38:39,978 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:38:39,982 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:38:39,982 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:38:39,982 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:38:39,982 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:38:39,983 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:38:39,983 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:38:39,983 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:38:39,983 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:38:39,983 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:38:39,984 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:38:39,985 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:38:39,985 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:38:39,985 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:38:39,987 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:38:39,988 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:38:39,988 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:38:39,988 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:38:39,988 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:38:39,988 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:38:39,989 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:38:39,989 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:38:39,989 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:38:39,989 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:38:39,989 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:38:39,990 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:38:39,990 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:38:39,990 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:38:39,990 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:38:39,990 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:38:39,991 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:38:39,991 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:38:39,991 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:38:40,041 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:38:40,058 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:38:40,063 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:38:40,064 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:38:40,065 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:38:40,065 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label13_true-unreach-call.c [2018-11-12 19:38:40,123 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05bbcf8e1/c61cbd30876546e3a8bc669e59dc1b9b/FLAG3118924e5 [2018-11-12 19:38:40,883 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:38:40,884 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label13_true-unreach-call.c [2018-11-12 19:38:40,909 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05bbcf8e1/c61cbd30876546e3a8bc669e59dc1b9b/FLAG3118924e5 [2018-11-12 19:38:40,930 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05bbcf8e1/c61cbd30876546e3a8bc669e59dc1b9b [2018-11-12 19:38:40,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:38:40,946 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:38:40,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:38:40,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:38:40,956 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:38:40,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:38:40" (1/1) ... [2018-11-12 19:38:40,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@294e4f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:38:40, skipping insertion in model container [2018-11-12 19:38:40,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:38:40" (1/1) ... [2018-11-12 19:38:40,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:38:41,132 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:38:42,267 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:38:42,272 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:38:42,703 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:38:42,736 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:38:42,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:38:42 WrapperNode [2018-11-12 19:38:42,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:38:42,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:38:42,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:38:42,739 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:38:42,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:38:42" (1/1) ... [2018-11-12 19:38:43,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:38:42" (1/1) ... [2018-11-12 19:38:43,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:38:43,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:38:43,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:38:43,016 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:38:43,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:38:42" (1/1) ... [2018-11-12 19:38:43,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:38:42" (1/1) ... [2018-11-12 19:38:43,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:38:42" (1/1) ... [2018-11-12 19:38:43,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:38:42" (1/1) ... [2018-11-12 19:38:43,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:38:42" (1/1) ... [2018-11-12 19:38:43,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:38:42" (1/1) ... [2018-11-12 19:38:43,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:38:42" (1/1) ... [2018-11-12 19:38:43,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:38:43,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:38:43,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:38:43,256 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:38:43,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:38:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:38:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:38:43,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:38:43,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:38:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 19:38:43,328 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 19:38:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:38:43,328 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:38:43,328 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:38:43,328 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:38:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:38:43,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:38:43,329 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:38:43,329 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:38:50,940 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:38:50,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:38:50 BoogieIcfgContainer [2018-11-12 19:38:50,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:38:50,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:38:50,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:38:50,945 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:38:50,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:38:40" (1/3) ... [2018-11-12 19:38:50,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e356dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:38:50, skipping insertion in model container [2018-11-12 19:38:50,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:38:42" (2/3) ... [2018-11-12 19:38:50,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e356dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:38:50, skipping insertion in model container [2018-11-12 19:38:50,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:38:50" (3/3) ... [2018-11-12 19:38:50,948 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label13_true-unreach-call.c [2018-11-12 19:38:50,957 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:38:50,967 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:38:50,985 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:38:51,032 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:38:51,033 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:38:51,033 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:38:51,033 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:38:51,033 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:38:51,033 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:38:51,034 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:38:51,034 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:38:51,074 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-12 19:38:51,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-12 19:38:51,084 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:38:51,085 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] [2018-11-12 19:38:51,087 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:38:51,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:51,094 INFO L82 PathProgramCache]: Analyzing trace with hash -2080894020, now seen corresponding path program 1 times [2018-11-12 19:38:51,097 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:38:51,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:51,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:38:51,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:51,156 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:38:51,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:38:51,602 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-12 19:38:51,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:38:51,658 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:38:51,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:38:51,659 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:38:51,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:38:51,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:38:51,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:38:51,698 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-11-12 19:39:02,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:39:02,909 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-11-12 19:39:02,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:39:02,911 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-11-12 19:39:02,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:39:02,949 INFO L225 Difference]: With dead ends: 2974 [2018-11-12 19:39:02,950 INFO L226 Difference]: Without dead ends: 2193 [2018-11-12 19:39:02,961 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:39:02,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-11-12 19:39:03,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2018-11-12 19:39:03,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-11-12 19:39:03,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3506 transitions. [2018-11-12 19:39:03,138 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3506 transitions. Word has length 52 [2018-11-12 19:39:03,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:39:03,138 INFO L480 AbstractCegarLoop]: Abstraction has 2193 states and 3506 transitions. [2018-11-12 19:39:03,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:39:03,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3506 transitions. [2018-11-12 19:39:03,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-11-12 19:39:03,146 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:39:03,147 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:39:03,147 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:39:03,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:39:03,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1512413558, now seen corresponding path program 1 times [2018-11-12 19:39:03,148 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:39:03,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:39:03,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:39:03,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:39:03,149 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:39:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:39:03,487 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:39:03,726 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:39:03,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:39:03,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 19:39:03,727 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:39:03,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 19:39:03,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 19:39:03,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 19:39:03,734 INFO L87 Difference]: Start difference. First operand 2193 states and 3506 transitions. Second operand 5 states. [2018-11-12 19:39:15,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:39:15,775 INFO L93 Difference]: Finished difference Result 6600 states and 10738 transitions. [2018-11-12 19:39:15,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:39:15,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2018-11-12 19:39:15,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:39:15,812 INFO L225 Difference]: With dead ends: 6600 [2018-11-12 19:39:15,813 INFO L226 Difference]: Without dead ends: 4413 [2018-11-12 19:39:15,822 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:39:15,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-11-12 19:39:15,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4378. [2018-11-12 19:39:15,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2018-11-12 19:39:15,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6712 transitions. [2018-11-12 19:39:15,954 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6712 transitions. Word has length 122 [2018-11-12 19:39:15,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:39:15,955 INFO L480 AbstractCegarLoop]: Abstraction has 4378 states and 6712 transitions. [2018-11-12 19:39:15,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 19:39:15,955 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6712 transitions. [2018-11-12 19:39:15,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-12 19:39:15,961 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:39:15,962 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:39:15,962 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:39:15,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:39:15,962 INFO L82 PathProgramCache]: Analyzing trace with hash -25619309, now seen corresponding path program 1 times [2018-11-12 19:39:15,963 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:39:15,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:39:15,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:39:15,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:39:15,964 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:39:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:39:16,252 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:39:16,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:39:16,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:39:16,253 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:39:16,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:39:16,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:39:16,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:39:16,255 INFO L87 Difference]: Start difference. First operand 4378 states and 6712 transitions. Second operand 6 states. [2018-11-12 19:39:21,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:39:21,367 INFO L93 Difference]: Finished difference Result 11002 states and 16943 transitions. [2018-11-12 19:39:21,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:39:21,368 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-11-12 19:39:21,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:39:21,413 INFO L225 Difference]: With dead ends: 11002 [2018-11-12 19:39:21,413 INFO L226 Difference]: Without dead ends: 6630 [2018-11-12 19:39:21,428 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:39:21,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2018-11-12 19:39:21,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6590. [2018-11-12 19:39:21,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-11-12 19:39:21,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 8773 transitions. [2018-11-12 19:39:21,613 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 8773 transitions. Word has length 149 [2018-11-12 19:39:21,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:39:21,614 INFO L480 AbstractCegarLoop]: Abstraction has 6590 states and 8773 transitions. [2018-11-12 19:39:21,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:39:21,615 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 8773 transitions. [2018-11-12 19:39:21,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-11-12 19:39:21,621 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:39:21,621 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:39:21,621 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:39:21,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:39:21,622 INFO L82 PathProgramCache]: Analyzing trace with hash -2048725409, now seen corresponding path program 1 times [2018-11-12 19:39:21,622 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:39:21,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:39:21,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:39:21,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:39:21,624 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:39:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:39:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:39:21,877 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:39:21,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:39:21,877 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:39:21,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:39:21,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:39:21,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:39:21,878 INFO L87 Difference]: Start difference. First operand 6590 states and 8773 transitions. Second operand 4 states. [2018-11-12 19:39:27,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:39:27,417 INFO L93 Difference]: Finished difference Result 13174 states and 17554 transitions. [2018-11-12 19:39:27,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:39:27,417 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2018-11-12 19:39:27,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:39:27,445 INFO L225 Difference]: With dead ends: 13174 [2018-11-12 19:39:27,445 INFO L226 Difference]: Without dead ends: 6590 [2018-11-12 19:39:27,467 INFO L604 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 [2018-11-12 19:39:27,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6590 states. [2018-11-12 19:39:27,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6590 to 6590. [2018-11-12 19:39:27,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-11-12 19:39:27,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 8069 transitions. [2018-11-12 19:39:27,605 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 8069 transitions. Word has length 159 [2018-11-12 19:39:27,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:39:27,606 INFO L480 AbstractCegarLoop]: Abstraction has 6590 states and 8069 transitions. [2018-11-12 19:39:27,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:39:27,607 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 8069 transitions. [2018-11-12 19:39:27,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-11-12 19:39:27,610 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:39:27,610 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:39:27,610 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:39:27,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:39:27,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1682119955, now seen corresponding path program 1 times [2018-11-12 19:39:27,611 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:39:27,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:39:27,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:39:27,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:39:27,612 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:39:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:39:27,791 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 19:39:27,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:39:27,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:39:27,792 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:39:27,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:39:27,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:39:27,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:39:27,793 INFO L87 Difference]: Start difference. First operand 6590 states and 8069 transitions. Second operand 4 states. [2018-11-12 19:39:35,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:39:35,034 INFO L93 Difference]: Finished difference Result 26000 states and 32594 transitions. [2018-11-12 19:39:35,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:39:35,034 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 229 [2018-11-12 19:39:35,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:39:35,105 INFO L225 Difference]: With dead ends: 26000 [2018-11-12 19:39:35,105 INFO L226 Difference]: Without dead ends: 19416 [2018-11-12 19:39:35,127 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:39:35,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19416 states. [2018-11-12 19:39:35,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19416 to 19416. [2018-11-12 19:39:35,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19416 states. [2018-11-12 19:39:35,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19416 states to 19416 states and 22926 transitions. [2018-11-12 19:39:35,510 INFO L78 Accepts]: Start accepts. Automaton has 19416 states and 22926 transitions. Word has length 229 [2018-11-12 19:39:35,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:39:35,511 INFO L480 AbstractCegarLoop]: Abstraction has 19416 states and 22926 transitions. [2018-11-12 19:39:35,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:39:35,511 INFO L276 IsEmpty]: Start isEmpty. Operand 19416 states and 22926 transitions. [2018-11-12 19:39:35,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-11-12 19:39:35,523 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:39:35,523 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:39:35,523 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:39:35,523 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:39:35,524 INFO L82 PathProgramCache]: Analyzing trace with hash 782960051, now seen corresponding path program 1 times [2018-11-12 19:39:35,524 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:39:35,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:39:35,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:39:35,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:39:35,525 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:39:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:39:36,186 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 235 proven. 70 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-12 19:39:36,187 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:39:36,187 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:39:36,188 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 344 with the following transitions: [2018-11-12 19:39:36,192 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1939], [1941], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2120], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2224], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-12 19:39:36,263 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:39:36,264 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:39:37,054 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:39:37,056 INFO L272 AbstractInterpreter]: Visited 129 different actions 129 times. Never merged. Never widened. Performed 1162 root evaluator evaluations with a maximum evaluation depth of 6. Performed 1162 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:39:37,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:39:37,100 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:39:38,065 INFO L227 lantSequenceWeakener]: Weakened 331 states. On average, predicates are now at 77.75% of their original sizes. [2018-11-12 19:39:38,066 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:39:38,289 INFO L415 sIntCurrentIteration]: We unified 342 AI predicates to 342 [2018-11-12 19:39:38,289 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:39:38,290 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:39:38,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-12 19:39:38,291 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:39:38,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 19:39:38,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 19:39:38,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 19:39:38,292 INFO L87 Difference]: Start difference. First operand 19416 states and 22926 transitions. Second operand 7 states. [2018-11-12 19:39:47,421 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:40:16,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:40:16,539 INFO L93 Difference]: Finished difference Result 39531 states and 46583 transitions. [2018-11-12 19:40:16,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:40:16,539 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 343 [2018-11-12 19:40:16,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:40:16,616 INFO L225 Difference]: With dead ends: 39531 [2018-11-12 19:40:16,617 INFO L226 Difference]: Without dead ends: 20121 [2018-11-12 19:40:16,660 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 343 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:40:16,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20121 states. [2018-11-12 19:40:17,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20121 to 20119. [2018-11-12 19:40:17,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20119 states. [2018-11-12 19:40:17,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20119 states to 20119 states and 23641 transitions. [2018-11-12 19:40:17,071 INFO L78 Accepts]: Start accepts. Automaton has 20119 states and 23641 transitions. Word has length 343 [2018-11-12 19:40:17,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:40:17,073 INFO L480 AbstractCegarLoop]: Abstraction has 20119 states and 23641 transitions. [2018-11-12 19:40:17,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 19:40:17,073 INFO L276 IsEmpty]: Start isEmpty. Operand 20119 states and 23641 transitions. [2018-11-12 19:40:17,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-11-12 19:40:17,085 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:40:17,086 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:40:17,086 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:40:17,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:40:17,087 INFO L82 PathProgramCache]: Analyzing trace with hash 511291718, now seen corresponding path program 1 times [2018-11-12 19:40:17,087 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:40:17,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:40:17,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:40:17,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:40:17,088 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:40:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:40:17,649 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:40:17,864 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:40:18,103 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:40:18,550 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-12 19:40:19,163 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 194 proven. 219 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:40:19,163 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:40:19,163 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:40:19,164 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 435 with the following transitions: [2018-11-12 19:40:19,165 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1939], [1941], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2188], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-12 19:40:19,172 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:40:19,172 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:40:20,755 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:40:20,755 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Performed 5868 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5868 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:40:20,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:40:20,795 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:40:22,153 INFO L227 lantSequenceWeakener]: Weakened 109 states. On average, predicates are now at 78.36% of their original sizes. [2018-11-12 19:40:22,154 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:40:22,849 INFO L415 sIntCurrentIteration]: We unified 433 AI predicates to 433 [2018-11-12 19:40:22,849 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:40:22,849 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:40:22,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-11-12 19:40:22,850 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:40:22,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 19:40:22,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 19:40:22,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-11-12 19:40:22,852 INFO L87 Difference]: Start difference. First operand 20119 states and 23641 transitions. Second operand 16 states. [2018-11-12 19:40:53,607 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:41:30,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:41:30,433 INFO L93 Difference]: Finished difference Result 42012 states and 49243 transitions. [2018-11-12 19:41:30,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-12 19:41:30,434 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 434 [2018-11-12 19:41:30,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:41:39,290 INFO L225 Difference]: With dead ends: 42012 [2018-11-12 19:41:39,290 INFO L226 Difference]: Without dead ends: 22602 [2018-11-12 19:41:39,334 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 442 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2018-11-12 19:41:39,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22602 states. [2018-11-12 19:41:39,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22602 to 22365. [2018-11-12 19:41:39,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22365 states. [2018-11-12 19:41:39,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22365 states to 22365 states and 25929 transitions. [2018-11-12 19:41:39,816 INFO L78 Accepts]: Start accepts. Automaton has 22365 states and 25929 transitions. Word has length 434 [2018-11-12 19:41:39,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:41:39,817 INFO L480 AbstractCegarLoop]: Abstraction has 22365 states and 25929 transitions. [2018-11-12 19:41:39,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 19:41:39,817 INFO L276 IsEmpty]: Start isEmpty. Operand 22365 states and 25929 transitions. [2018-11-12 19:41:39,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2018-11-12 19:41:39,859 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:41:39,860 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:41:39,861 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:41:39,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:41:39,861 INFO L82 PathProgramCache]: Analyzing trace with hash 955300715, now seen corresponding path program 1 times [2018-11-12 19:41:39,862 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:41:39,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:41:39,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:41:39,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:41:39,864 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:41:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:41:41,179 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 385 proven. 70 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2018-11-12 19:41:41,180 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:41:41,180 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:41:41,180 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 872 with the following transitions: [2018-11-12 19:41:41,181 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1939], [1941], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2120], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2224], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-12 19:41:41,197 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:41:41,197 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:41:42,768 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:41:42,768 INFO L272 AbstractInterpreter]: Visited 538 different actions 1070 times. Merged at 5 different actions 5 times. Never widened. Performed 14947 root evaluator evaluations with a maximum evaluation depth of 6. Performed 14947 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:41:42,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:41:42,776 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:41:43,918 INFO L227 lantSequenceWeakener]: Weakened 562 states. On average, predicates are now at 77.68% of their original sizes. [2018-11-12 19:41:43,919 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:41:46,592 INFO L415 sIntCurrentIteration]: We unified 870 AI predicates to 870 [2018-11-12 19:41:46,593 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:41:46,593 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:41:46,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [30] imperfect sequences [6] total 34 [2018-11-12 19:41:46,593 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:41:46,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-12 19:41:46,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-12 19:41:46,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2018-11-12 19:41:46,596 INFO L87 Difference]: Start difference. First operand 22365 states and 25929 transitions. Second operand 30 states. Received shutdown request... [2018-11-12 19:42:09,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-12 19:42:09,382 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:42:09,387 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:42:09,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:42:09 BoogieIcfgContainer [2018-11-12 19:42:09,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:42:09,389 INFO L168 Benchmark]: Toolchain (without parser) took 208444.10 ms. Allocated memory was 1.5 GB in the beginning and 5.7 GB in the end (delta: 4.1 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-11-12 19:42:09,390 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:42:09,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1789.33 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-12 19:42:09,392 INFO L168 Benchmark]: Boogie Procedure Inliner took 278.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.7 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -986.7 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. [2018-11-12 19:42:09,393 INFO L168 Benchmark]: Boogie Preprocessor took 239.84 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-11-12 19:42:09,393 INFO L168 Benchmark]: RCFGBuilder took 7684.47 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 502.5 MB). Peak memory consumption was 502.5 MB. Max. memory is 7.1 GB. [2018-11-12 19:42:09,394 INFO L168 Benchmark]: TraceAbstraction took 198446.67 ms. Allocated memory was 2.3 GB in the beginning and 5.7 GB in the end (delta: 3.3 GB). Free memory was 1.7 GB in the beginning and 2.4 GB in the end (delta: -684.1 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-11-12 19:42:09,400 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1789.33 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 278.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.7 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -986.7 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 239.84 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7684.47 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 502.5 MB). Peak memory consumption was 502.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 198446.67 ms. Allocated memory was 2.3 GB in the beginning and 5.7 GB in the end (delta: 3.3 GB). Free memory was 1.7 GB in the beginning and 2.4 GB in the end (delta: -684.1 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 144). Cancelled while BasicCegarLoop was constructing difference of abstraction (22365states) and FLOYD_HOARE automaton (currently 13 states, 30 states before enhancement),while ReachableStatesComputation was computing reachable states (1078 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 198.3s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 179.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3758 SDtfs, 17453 SDslu, 1562 SDs, 0 SdLazy, 42606 SolverSat, 5201 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75.1s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1699 GetRequests, 1532 SyntacticMatches, 82 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22365occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.1s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9979435713398981 AbsIntWeakeningRatio, 0.0668693009118541 AbsIntAvgWeakeningVarsNumRemoved, 13.61884498480243 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 314 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 2359 NumberOfCodeBlocks, 2359 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2351 ConstructedInterpolants, 0 QuantifiedInterpolants, 3407467 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 1438/1797 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown