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/Problem16_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:56:04,932 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:56:04,934 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:56:04,948 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:56:04,949 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:56:04,951 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:56:04,952 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:56:04,954 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:56:04,956 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:56:04,959 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:56:04,961 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:56:04,961 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:56:04,962 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:56:04,964 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:56:04,965 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:56:04,966 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:56:04,966 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:56:04,977 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:56:04,981 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:56:04,985 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:56:04,986 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:56:04,989 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:56:04,993 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:56:04,994 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:56:04,994 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:56:04,996 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:56:04,997 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:56:05,000 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:56:05,001 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:56:05,002 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:56:05,002 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:56:05,003 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:56:05,003 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:56:05,003 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:56:05,006 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:56:05,006 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:56:05,008 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 [2018-11-07 20:56:05,033 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:56:05,034 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:56:05,034 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:56:05,036 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:56:05,036 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:56:05,036 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:56:05,036 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:56:05,037 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:56:05,037 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:56:05,037 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:56:05,037 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:56:05,037 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:56:05,038 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:56:05,038 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:56:05,039 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:56:05,039 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:56:05,039 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:56:05,039 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:56:05,039 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:56:05,040 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:56:05,040 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:56:05,040 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:56:05,040 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:56:05,040 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:56:05,041 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:56:05,041 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:56:05,041 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:56:05,041 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:56:05,041 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:56:05,042 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:56:05,042 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:56:05,042 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:56:05,042 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:56:05,042 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:56:05,043 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:56:05,093 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:56:05,106 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:56:05,110 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:56:05,112 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:56:05,112 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:56:05,113 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label49_true-unreach-call.c [2018-11-07 20:56:05,179 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a003f9d49/acf291892a714a87a96c6fd7a7969b17/FLAG369338ed8 [2018-11-07 20:56:05,887 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:56:05,888 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label49_true-unreach-call.c [2018-11-07 20:56:05,904 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a003f9d49/acf291892a714a87a96c6fd7a7969b17/FLAG369338ed8 [2018-11-07 20:56:05,919 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a003f9d49/acf291892a714a87a96c6fd7a7969b17 [2018-11-07 20:56:05,930 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:56:05,932 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:56:05,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:56:05,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:56:05,937 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:56:05,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:56:05" (1/1) ... [2018-11-07 20:56:05,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d100604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:05, skipping insertion in model container [2018-11-07 20:56:05,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:56:05" (1/1) ... [2018-11-07 20:56:05,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:56:06,057 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:56:06,786 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:56:06,790 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:56:07,090 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:56:07,113 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:56:07,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:07 WrapperNode [2018-11-07 20:56:07,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:56:07,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:56:07,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:56:07,116 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:56:07,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:07" (1/1) ... [2018-11-07 20:56:07,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:07" (1/1) ... [2018-11-07 20:56:07,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:56:07,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:56:07,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:56:07,312 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:56:07,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:07" (1/1) ... [2018-11-07 20:56:07,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:07" (1/1) ... [2018-11-07 20:56:07,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:07" (1/1) ... [2018-11-07 20:56:07,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:07" (1/1) ... [2018-11-07 20:56:07,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:07" (1/1) ... [2018-11-07 20:56:07,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:07" (1/1) ... [2018-11-07 20:56:07,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:07" (1/1) ... [2018-11-07 20:56:07,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:56:07,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:56:07,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:56:07,476 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:56:07,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:56:07,541 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:56:07,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:56:07,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:56:07,542 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:56:07,542 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:56:07,542 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:56:07,543 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:56:07,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:56:07,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:56:07,543 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:56:07,543 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:56:13,148 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:56:13,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:56:13 BoogieIcfgContainer [2018-11-07 20:56:13,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:56:13,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:56:13,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:56:13,156 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:56:13,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:56:05" (1/3) ... [2018-11-07 20:56:13,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67529a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:56:13, skipping insertion in model container [2018-11-07 20:56:13,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:07" (2/3) ... [2018-11-07 20:56:13,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67529a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:56:13, skipping insertion in model container [2018-11-07 20:56:13,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:56:13" (3/3) ... [2018-11-07 20:56:13,160 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label49_true-unreach-call.c [2018-11-07 20:56:13,170 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:56:13,177 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:56:13,192 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:56:13,234 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:56:13,234 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:56:13,234 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:56:13,235 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:56:13,235 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:56:13,235 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:56:13,235 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:56:13,235 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:56:13,267 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 20:56:13,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-07 20:56:13,278 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:56:13,280 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:56:13,282 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:56:13,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:56:13,289 INFO L82 PathProgramCache]: Analyzing trace with hash -854858477, now seen corresponding path program 1 times [2018-11-07 20:56:13,291 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:56:13,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:13,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:56:13,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:13,342 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:56:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:56:13,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:56:13,854 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:56:13,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:56:13,854 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:56:13,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:56:13,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:56:13,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:56:13,882 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-11-07 20:56:20,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:56:20,422 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-11-07 20:56:20,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:56:20,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2018-11-07 20:56:20,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:56:20,452 INFO L225 Difference]: With dead ends: 1513 [2018-11-07 20:56:20,453 INFO L226 Difference]: Without dead ends: 1097 [2018-11-07 20:56:20,464 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 [2018-11-07 20:56:20,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-11-07 20:56:20,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 744. [2018-11-07 20:56:20,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 20:56:20,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1301 transitions. [2018-11-07 20:56:20,588 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1301 transitions. Word has length 67 [2018-11-07 20:56:20,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:56:20,589 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1301 transitions. [2018-11-07 20:56:20,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:56:20,590 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1301 transitions. [2018-11-07 20:56:20,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-07 20:56:20,601 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:56:20,602 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, 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] [2018-11-07 20:56:20,602 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:56:20,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:56:20,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1317509741, now seen corresponding path program 1 times [2018-11-07 20:56:20,603 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:56:20,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:20,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:56:20,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:20,604 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:56:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:56:20,995 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:56:20,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:56:20,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:56:20,995 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:56:20,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:56:21,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:56:21,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:56:21,001 INFO L87 Difference]: Start difference. First operand 744 states and 1301 transitions. Second operand 6 states. [2018-11-07 20:56:24,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:56:24,732 INFO L93 Difference]: Finished difference Result 2196 states and 3924 transitions. [2018-11-07 20:56:24,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:56:24,734 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2018-11-07 20:56:24,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:56:24,747 INFO L225 Difference]: With dead ends: 2196 [2018-11-07 20:56:24,747 INFO L226 Difference]: Without dead ends: 1458 [2018-11-07 20:56:24,751 INFO L604 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 [2018-11-07 20:56:24,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2018-11-07 20:56:24,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1438. [2018-11-07 20:56:24,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1438 states. [2018-11-07 20:56:24,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2463 transitions. [2018-11-07 20:56:24,817 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2463 transitions. Word has length 138 [2018-11-07 20:56:24,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:56:24,818 INFO L480 AbstractCegarLoop]: Abstraction has 1438 states and 2463 transitions. [2018-11-07 20:56:24,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:56:24,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2463 transitions. [2018-11-07 20:56:24,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-07 20:56:24,821 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:56:24,822 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, 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] [2018-11-07 20:56:24,822 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:56:24,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:56:24,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1542259272, now seen corresponding path program 1 times [2018-11-07 20:56:24,823 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:56:24,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:24,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:56:24,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:24,824 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:56:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:56:25,131 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:56:25,366 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:56:25,367 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:56:25,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:56:25,367 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:56:25,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:56:25,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:56:25,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:56:25,369 INFO L87 Difference]: Start difference. First operand 1438 states and 2463 transitions. Second operand 5 states. [2018-11-07 20:56:29,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:56:29,581 INFO L93 Difference]: Finished difference Result 3597 states and 6200 transitions. [2018-11-07 20:56:29,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:56:29,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2018-11-07 20:56:29,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:56:29,596 INFO L225 Difference]: With dead ends: 3597 [2018-11-07 20:56:29,596 INFO L226 Difference]: Without dead ends: 2165 [2018-11-07 20:56:29,602 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:56:29,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2018-11-07 20:56:29,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 2145. [2018-11-07 20:56:29,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2145 states. [2018-11-07 20:56:29,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 3126 transitions. [2018-11-07 20:56:29,672 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 3126 transitions. Word has length 139 [2018-11-07 20:56:29,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:56:29,673 INFO L480 AbstractCegarLoop]: Abstraction has 2145 states and 3126 transitions. [2018-11-07 20:56:29,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:56:29,673 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 3126 transitions. [2018-11-07 20:56:29,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-11-07 20:56:29,678 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:56:29,679 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, 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] [2018-11-07 20:56:29,679 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:56:29,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:56:29,679 INFO L82 PathProgramCache]: Analyzing trace with hash -353980736, now seen corresponding path program 1 times [2018-11-07 20:56:29,680 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:56:29,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:29,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:56:29,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:29,681 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:56:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:56:30,008 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:56:30,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:56:30,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:56:30,009 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:56:30,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:56:30,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:56:30,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:56:30,010 INFO L87 Difference]: Start difference. First operand 2145 states and 3126 transitions. Second operand 6 states. [2018-11-07 20:56:33,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:56:33,606 INFO L93 Difference]: Finished difference Result 7058 states and 10436 transitions. [2018-11-07 20:56:33,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:56:33,611 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 231 [2018-11-07 20:56:33,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:56:33,643 INFO L225 Difference]: With dead ends: 7058 [2018-11-07 20:56:33,643 INFO L226 Difference]: Without dead ends: 4919 [2018-11-07 20:56:33,661 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 [2018-11-07 20:56:33,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4919 states. [2018-11-07 20:56:33,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4919 to 4879. [2018-11-07 20:56:33,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4879 states. [2018-11-07 20:56:33,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4879 states to 4879 states and 6857 transitions. [2018-11-07 20:56:33,801 INFO L78 Accepts]: Start accepts. Automaton has 4879 states and 6857 transitions. Word has length 231 [2018-11-07 20:56:33,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:56:33,802 INFO L480 AbstractCegarLoop]: Abstraction has 4879 states and 6857 transitions. [2018-11-07 20:56:33,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:56:33,802 INFO L276 IsEmpty]: Start isEmpty. Operand 4879 states and 6857 transitions. [2018-11-07 20:56:33,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-11-07 20:56:33,807 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:56:33,808 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, 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] [2018-11-07 20:56:33,808 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:56:33,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:56:33,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1524621864, now seen corresponding path program 1 times [2018-11-07 20:56:33,809 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:56:33,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:33,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:56:33,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:33,810 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:56:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:56:34,151 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:56:34,348 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:56:34,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:56:34,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:56:34,349 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:56:34,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:56:34,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:56:34,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:56:34,350 INFO L87 Difference]: Start difference. First operand 4879 states and 6857 transitions. Second operand 6 states. [2018-11-07 20:56:37,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:56:37,995 INFO L93 Difference]: Finished difference Result 12216 states and 17406 transitions. [2018-11-07 20:56:37,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:56:37,999 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 251 [2018-11-07 20:56:38,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:56:38,034 INFO L225 Difference]: With dead ends: 12216 [2018-11-07 20:56:38,035 INFO L226 Difference]: Without dead ends: 7343 [2018-11-07 20:56:38,064 INFO L604 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 [2018-11-07 20:56:38,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7343 states. [2018-11-07 20:56:38,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7343 to 7306. [2018-11-07 20:56:38,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7306 states. [2018-11-07 20:56:38,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7306 states to 7306 states and 9825 transitions. [2018-11-07 20:56:38,248 INFO L78 Accepts]: Start accepts. Automaton has 7306 states and 9825 transitions. Word has length 251 [2018-11-07 20:56:38,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:56:38,248 INFO L480 AbstractCegarLoop]: Abstraction has 7306 states and 9825 transitions. [2018-11-07 20:56:38,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:56:38,249 INFO L276 IsEmpty]: Start isEmpty. Operand 7306 states and 9825 transitions. [2018-11-07 20:56:38,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-11-07 20:56:38,253 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:56:38,254 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 20:56:38,254 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:56:38,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:56:38,255 INFO L82 PathProgramCache]: Analyzing trace with hash 331280388, now seen corresponding path program 1 times [2018-11-07 20:56:38,255 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:56:38,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:38,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:56:38,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:38,256 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:56:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:56:38,885 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 179 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:56:38,886 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:56:38,886 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:56:38,887 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 269 with the following transitions: [2018-11-07 20:56:38,889 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [615], [617], [620], [628], [636], [644], [652], [660], [668], [673], [676], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:56:38,937 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:56:38,938 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:56:39,842 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:56:39,844 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 20:56:39,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:56:39,894 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:56:40,905 INFO L227 lantSequenceWeakener]: Weakened 246 states. On average, predicates are now at 78.28% of their original sizes. [2018-11-07 20:56:40,906 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:56:42,922 INFO L415 sIntCurrentIteration]: We unified 267 AI predicates to 267 [2018-11-07 20:56:42,922 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:56:42,923 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:56:42,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2018-11-07 20:56:42,923 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:56:42,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:56:42,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:56:42,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:56:42,925 INFO L87 Difference]: Start difference. First operand 7306 states and 9825 transitions. Second operand 11 states. [2018-11-07 20:56:48,630 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:57:11,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:57:11,911 INFO L93 Difference]: Finished difference Result 14949 states and 20050 transitions. [2018-11-07 20:57:11,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 20:57:11,911 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 268 [2018-11-07 20:57:11,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:57:11,941 INFO L225 Difference]: With dead ends: 14949 [2018-11-07 20:57:11,941 INFO L226 Difference]: Without dead ends: 7649 [2018-11-07 20:57:11,963 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 272 GetRequests, 222 SyntacticMatches, 36 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-11-07 20:57:11,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7649 states. [2018-11-07 20:57:12,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7649 to 7644. [2018-11-07 20:57:12,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7644 states. [2018-11-07 20:57:12,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7644 states to 7644 states and 10172 transitions. [2018-11-07 20:57:12,126 INFO L78 Accepts]: Start accepts. Automaton has 7644 states and 10172 transitions. Word has length 268 [2018-11-07 20:57:12,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:57:12,127 INFO L480 AbstractCegarLoop]: Abstraction has 7644 states and 10172 transitions. [2018-11-07 20:57:12,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 20:57:12,127 INFO L276 IsEmpty]: Start isEmpty. Operand 7644 states and 10172 transitions. [2018-11-07 20:57:12,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-11-07 20:57:12,134 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:57:12,135 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, 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] [2018-11-07 20:57:12,135 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:57:12,135 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:12,136 INFO L82 PathProgramCache]: Analyzing trace with hash -2119334232, now seen corresponding path program 1 times [2018-11-07 20:57:12,136 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:57:12,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:12,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:57:12,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:12,137 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:57:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:57:12,503 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:57:12,760 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 20:57:12,761 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:57:12,761 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:57:12,761 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 316 with the following transitions: [2018-11-07 20:57:12,762 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [615], [617], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:57:12,778 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:57:12,778 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:57:15,250 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:57:15,250 INFO L272 AbstractInterpreter]: Visited 255 different actions 1998 times. Merged at 5 different actions 35 times. Widened at 1 different actions 3 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:57:15,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:15,282 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:57:15,744 INFO L227 lantSequenceWeakener]: Weakened 153 states. On average, predicates are now at 78.97% of their original sizes. [2018-11-07 20:57:15,745 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:57:16,065 INFO L415 sIntCurrentIteration]: We unified 314 AI predicates to 314 [2018-11-07 20:57:16,066 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:57:16,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:57:16,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [4] total 21 [2018-11-07 20:57:16,066 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:57:16,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 20:57:16,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 20:57:16,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2018-11-07 20:57:16,068 INFO L87 Difference]: Start difference. First operand 7644 states and 10172 transitions. Second operand 19 states. [2018-11-07 20:57:19,104 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:57:48,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:57:48,009 INFO L93 Difference]: Finished difference Result 15589 states and 20819 transitions. [2018-11-07 20:57:48,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-07 20:57:48,009 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 315 [2018-11-07 20:57:48,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:57:48,034 INFO L225 Difference]: With dead ends: 15589 [2018-11-07 20:57:48,034 INFO L226 Difference]: Without dead ends: 8289 [2018-11-07 20:57:48,058 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 329 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=219, Invalid=903, Unknown=0, NotChecked=0, Total=1122 [2018-11-07 20:57:48,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8289 states. [2018-11-07 20:57:48,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8289 to 8281. [2018-11-07 20:57:48,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8281 states. [2018-11-07 20:57:48,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 10859 transitions. [2018-11-07 20:57:48,235 INFO L78 Accepts]: Start accepts. Automaton has 8281 states and 10859 transitions. Word has length 315 [2018-11-07 20:57:48,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:57:48,236 INFO L480 AbstractCegarLoop]: Abstraction has 8281 states and 10859 transitions. [2018-11-07 20:57:48,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 20:57:48,236 INFO L276 IsEmpty]: Start isEmpty. Operand 8281 states and 10859 transitions. [2018-11-07 20:57:48,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-11-07 20:57:48,246 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:57:48,246 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:57:48,247 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:57:48,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:48,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1198417913, now seen corresponding path program 1 times [2018-11-07 20:57:48,247 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:57:48,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:48,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:57:48,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:48,248 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:57:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:57:48,589 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 20:57:49,276 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 252 proven. 116 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-11-07 20:57:49,276 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:57:49,276 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:57:49,277 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 361 with the following transitions: [2018-11-07 20:57:49,277 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [615], [617], [620], [628], [636], [644], [652], [660], [668], [673], [676], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:57:49,282 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:57:49,282 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:57:49,343 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:57:49,680 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:57:49,680 INFO L272 AbstractInterpreter]: Visited 139 different actions 408 times. Merged at 5 different actions 13 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:57:49,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:49,706 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:57:50,130 INFO L227 lantSequenceWeakener]: Weakened 78 states. On average, predicates are now at 77.33% of their original sizes. [2018-11-07 20:57:50,130 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:57:50,509 INFO L415 sIntCurrentIteration]: We unified 359 AI predicates to 359 [2018-11-07 20:57:50,509 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:57:50,510 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:57:50,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [7] total 22 [2018-11-07 20:57:50,510 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:57:50,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 20:57:50,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 20:57:50,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-11-07 20:57:50,511 INFO L87 Difference]: Start difference. First operand 8281 states and 10859 transitions. Second operand 17 states. [2018-11-07 20:58:24,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:58:24,944 INFO L93 Difference]: Finished difference Result 17634 states and 23017 transitions. [2018-11-07 20:58:24,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-07 20:58:24,944 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 360 [2018-11-07 20:58:24,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:58:24,973 INFO L225 Difference]: With dead ends: 17634 [2018-11-07 20:58:24,973 INFO L226 Difference]: Without dead ends: 9994 [2018-11-07 20:58:24,991 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 368 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2018-11-07 20:58:24,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9994 states. [2018-11-07 20:58:25,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9994 to 9471. [2018-11-07 20:58:25,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9471 states. [2018-11-07 20:58:25,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9471 states to 9471 states and 12123 transitions. [2018-11-07 20:58:25,159 INFO L78 Accepts]: Start accepts. Automaton has 9471 states and 12123 transitions. Word has length 360 [2018-11-07 20:58:25,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:58:25,160 INFO L480 AbstractCegarLoop]: Abstraction has 9471 states and 12123 transitions. [2018-11-07 20:58:25,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 20:58:25,160 INFO L276 IsEmpty]: Start isEmpty. Operand 9471 states and 12123 transitions. [2018-11-07 20:58:25,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-11-07 20:58:25,171 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:58:25,171 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:58:25,172 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:58:25,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:58:25,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1960668033, now seen corresponding path program 1 times [2018-11-07 20:58:25,172 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:58:25,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:58:25,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:58:25,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:58:25,174 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:58:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:58:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 311 proven. 70 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-07 20:58:26,195 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:58:26,195 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:58:26,195 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 397 with the following transitions: [2018-11-07 20:58:26,196 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [615], [617], [620], [628], [636], [644], [652], [660], [668], [673], [676], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:58:26,198 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:58:26,199 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:58:26,331 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:58:27,186 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:58:27,186 INFO L272 AbstractInterpreter]: Visited 139 different actions 404 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:58:27,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:58:27,228 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:58:27,771 INFO L227 lantSequenceWeakener]: Weakened 78 states. On average, predicates are now at 77.33% of their original sizes. [2018-11-07 20:58:27,772 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:58:28,791 INFO L415 sIntCurrentIteration]: We unified 395 AI predicates to 395 [2018-11-07 20:58:28,791 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:58:28,791 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:58:28,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [13] total 28 [2018-11-07 20:58:28,791 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:58:28,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 20:58:28,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 20:58:28,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-11-07 20:58:28,793 INFO L87 Difference]: Start difference. First operand 9471 states and 12123 transitions. Second operand 17 states. [2018-11-07 20:59:03,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:59:03,789 INFO L93 Difference]: Finished difference Result 18556 states and 24039 transitions. [2018-11-07 20:59:03,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-07 20:59:03,789 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 396 [2018-11-07 20:59:03,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:59:03,826 INFO L225 Difference]: With dead ends: 18556 [2018-11-07 20:59:03,827 INFO L226 Difference]: Without dead ends: 10912 [2018-11-07 20:59:03,842 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 404 GetRequests, 360 SyntacticMatches, 20 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2018-11-07 20:59:03,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10912 states. [2018-11-07 20:59:04,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10912 to 10294. [2018-11-07 20:59:04,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10294 states. [2018-11-07 20:59:04,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10294 states to 10294 states and 13009 transitions. [2018-11-07 20:59:04,032 INFO L78 Accepts]: Start accepts. Automaton has 10294 states and 13009 transitions. Word has length 396 [2018-11-07 20:59:04,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:59:04,033 INFO L480 AbstractCegarLoop]: Abstraction has 10294 states and 13009 transitions. [2018-11-07 20:59:04,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 20:59:04,033 INFO L276 IsEmpty]: Start isEmpty. Operand 10294 states and 13009 transitions. [2018-11-07 20:59:04,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2018-11-07 20:59:04,051 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:59:04,051 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:59:04,052 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:59:04,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:04,052 INFO L82 PathProgramCache]: Analyzing trace with hash -402976410, now seen corresponding path program 1 times [2018-11-07 20:59:04,052 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:59:04,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:04,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:59:04,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:04,053 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:59:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:59:04,780 WARN L179 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 20:59:05,257 WARN L179 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-07 20:59:05,782 WARN L179 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2018-11-07 20:59:06,342 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 313 proven. 70 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-07 20:59:06,342 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:59:06,342 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:59:06,342 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 422 with the following transitions: [2018-11-07 20:59:06,342 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [615], [617], [620], [628], [636], [644], [652], [660], [668], [673], [676], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1004], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:59:06,345 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:59:06,345 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:59:06,479 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:59:06,843 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:59:06,844 INFO L272 AbstractInterpreter]: Visited 162 different actions 473 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:59:06,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:06,881 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:59:07,458 INFO L227 lantSequenceWeakener]: Weakened 78 states. On average, predicates are now at 77.33% of their original sizes. [2018-11-07 20:59:07,458 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:59:07,871 INFO L415 sIntCurrentIteration]: We unified 420 AI predicates to 420 [2018-11-07 20:59:07,872 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:59:07,872 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:59:07,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [13] total 29 [2018-11-07 20:59:07,872 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:59:07,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 20:59:07,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 20:59:07,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-11-07 20:59:07,874 INFO L87 Difference]: Start difference. First operand 10294 states and 13009 transitions. Second operand 18 states. Received shutdown request... [2018-11-07 20:59:44,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-07 20:59:44,735 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:59:44,739 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:59:44,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:59:44 BoogieIcfgContainer [2018-11-07 20:59:44,740 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:59:44,741 INFO L168 Benchmark]: Toolchain (without parser) took 218809.79 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -721.5 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-07 20:59:44,742 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:59:44,742 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1182.03 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 20:59:44,743 INFO L168 Benchmark]: Boogie Procedure Inliner took 196.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -885.7 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-11-07 20:59:44,744 INFO L168 Benchmark]: Boogie Preprocessor took 163.55 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:59:44,744 INFO L168 Benchmark]: RCFGBuilder took 5673.52 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 263.5 MB). Peak memory consumption was 263.5 MB. Max. memory is 7.1 GB. [2018-11-07 20:59:44,745 INFO L168 Benchmark]: TraceAbstraction took 211589.47 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -183.9 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-07 20:59:44,750 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 1182.03 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 196.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -885.7 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 163.55 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5673.52 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 263.5 MB). Peak memory consumption was 263.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211589.47 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -183.9 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 187]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 187). Cancelled while BasicCegarLoop was constructing difference of abstraction (10294states) and FLOYD_HOARE automaton (currently 27 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (12290 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 211.5s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 189.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2469 SDtfs, 33134 SDslu, 1919 SDs, 0 SdLazy, 34750 SolverSat, 4609 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 73.9s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 1850 GetRequests, 1639 SyntacticMatches, 60 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10294occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.5s AbstIntTime, 5 AbstIntIterations, 5 AbstIntStrong, 0.9977032361090343 AbsIntWeakeningRatio, 0.08091168091168091 AbsIntAvgWeakeningVarsNumRemoved, 8.696296296296296 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 1624 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 2586 NumberOfCodeBlocks, 2586 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2576 ConstructedInterpolants, 0 QuantifiedInterpolants, 5703711 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 1483/1807 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown