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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label37_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:38:17,960 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:38:17,963 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:38:17,980 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:38:17,980 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:38:17,981 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:38:17,983 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:38:17,986 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:38:17,988 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:38:17,989 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:38:17,989 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:38:17,997 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:38:17,998 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:38:18,001 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:38:18,003 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:38:18,004 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:38:18,005 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:38:18,006 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:38:18,012 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:38:18,014 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:38:18,016 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:38:18,017 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:38:18,022 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:38:18,022 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:38:18,023 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:38:18,024 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:38:18,024 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:38:18,026 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:38:18,026 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:38:18,031 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:38:18,031 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:38:18,031 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:38:18,032 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:38:18,032 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:38:18,034 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:38:18,035 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:38:18,035 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:38:18,061 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:38:18,061 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:38:18,064 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:38:18,064 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:38:18,064 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:38:18,065 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:38:18,065 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:38:18,065 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:38:18,065 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:38:18,065 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:38:18,066 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:38:18,066 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:38:18,066 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:38:18,066 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:38:18,067 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:38:18,067 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:38:18,067 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:38:18,068 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:38:18,068 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:38:18,068 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:38:18,068 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:38:18,068 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:38:18,069 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:38:18,069 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:38:18,069 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:38:18,069 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:38:18,069 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:38:18,070 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:38:18,070 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:38:18,070 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:38:18,070 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:38:18,070 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:38:18,070 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:38:18,071 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:38:18,071 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:38:18,071 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:38:18,117 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:38:18,132 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:38:18,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:38:18,136 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:38:18,136 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:38:18,137 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label37_true-unreach-call.c [2018-11-07 09:38:18,200 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75b8d03b3/03fcd153844843579fe4266c6a33349c/FLAG554a4cb46 [2018-11-07 09:38:18,968 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:38:18,969 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label37_true-unreach-call.c [2018-11-07 09:38:18,997 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75b8d03b3/03fcd153844843579fe4266c6a33349c/FLAG554a4cb46 [2018-11-07 09:38:19,015 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75b8d03b3/03fcd153844843579fe4266c6a33349c [2018-11-07 09:38:19,029 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:38:19,032 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:38:19,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:38:19,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:38:19,039 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:38:19,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:38:19" (1/1) ... [2018-11-07 09:38:19,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fb2d5a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:19, skipping insertion in model container [2018-11-07 09:38:19,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:38:19" (1/1) ... [2018-11-07 09:38:19,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:38:19,210 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:38:20,221 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:38:20,227 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:38:20,731 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:38:20,760 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:38:20,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:20 WrapperNode [2018-11-07 09:38:20,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:38:20,763 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:38:20,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:38:20,763 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:38:20,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:20" (1/1) ... [2018-11-07 09:38:21,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:20" (1/1) ... [2018-11-07 09:38:21,036 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:38:21,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:38:21,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:38:21,036 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:38:21,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:20" (1/1) ... [2018-11-07 09:38:21,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:20" (1/1) ... [2018-11-07 09:38:21,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:20" (1/1) ... [2018-11-07 09:38:21,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:20" (1/1) ... [2018-11-07 09:38:21,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:20" (1/1) ... [2018-11-07 09:38:21,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:20" (1/1) ... [2018-11-07 09:38:21,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:20" (1/1) ... [2018-11-07 09:38:21,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:38:21,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:38:21,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:38:21,260 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:38:21,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:20" (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 09:38:21,328 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:38:21,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:38:21,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:38:21,328 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 09:38:21,329 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 09:38:21,329 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:38:21,329 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:38:21,329 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:38:21,329 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:38:21,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:38:21,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:38:21,330 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:38:21,330 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:38:29,759 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:38:29,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:38:29 BoogieIcfgContainer [2018-11-07 09:38:29,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:38:29,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:38:29,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:38:29,765 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:38:29,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:38:19" (1/3) ... [2018-11-07 09:38:29,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d5dee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:38:29, skipping insertion in model container [2018-11-07 09:38:29,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:20" (2/3) ... [2018-11-07 09:38:29,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d5dee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:38:29, skipping insertion in model container [2018-11-07 09:38:29,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:38:29" (3/3) ... [2018-11-07 09:38:29,768 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label37_true-unreach-call.c [2018-11-07 09:38:29,778 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:38:29,787 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:38:29,805 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:38:29,853 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:38:29,853 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:38:29,853 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:38:29,853 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:38:29,854 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:38:29,854 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:38:29,854 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:38:29,854 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:38:29,894 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 09:38:29,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-11-07 09:38:29,905 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:38:29,906 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] [2018-11-07 09:38:29,908 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:38:29,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:29,915 INFO L82 PathProgramCache]: Analyzing trace with hash -986034585, now seen corresponding path program 1 times [2018-11-07 09:38:29,917 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:38:29,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:29,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:38:29,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:29,972 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:38:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:38:30,448 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:38:30,643 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 09:38:30,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:38:30,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 09:38:30,649 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:38:30,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:38:30,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:38:30,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:38:30,677 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 09:38:37,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:38:37,419 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 09:38:37,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:38:37,421 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2018-11-07 09:38:37,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:38:37,455 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 09:38:37,455 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 09:38:37,466 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:38:37,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 09:38:37,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 09:38:37,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 09:38:37,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-11-07 09:38:37,613 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 63 [2018-11-07 09:38:37,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:38:37,614 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-11-07 09:38:37,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:38:37,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-11-07 09:38:37,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-07 09:38:37,623 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:38:37,624 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, 1, 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 09:38:37,624 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:38:37,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:37,624 INFO L82 PathProgramCache]: Analyzing trace with hash 149408540, now seen corresponding path program 1 times [2018-11-07 09:38:37,625 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:38:37,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:37,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:38:37,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:37,627 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:38:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:38:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:38:37,913 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:38:37,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:38:37,913 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:38:37,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:38:37,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:38:37,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:38:37,916 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 5 states. [2018-11-07 09:38:45,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:38:45,675 INFO L93 Difference]: Finished difference Result 3698 states and 6787 transitions. [2018-11-07 09:38:45,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:38:45,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2018-11-07 09:38:45,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:38:45,690 INFO L225 Difference]: With dead ends: 3698 [2018-11-07 09:38:45,690 INFO L226 Difference]: Without dead ends: 2230 [2018-11-07 09:38:45,695 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:38:45,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2018-11-07 09:38:45,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2209. [2018-11-07 09:38:45,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2209 states. [2018-11-07 09:38:45,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3833 transitions. [2018-11-07 09:38:45,758 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3833 transitions. Word has length 135 [2018-11-07 09:38:45,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:38:45,759 INFO L480 AbstractCegarLoop]: Abstraction has 2209 states and 3833 transitions. [2018-11-07 09:38:45,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:38:45,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3833 transitions. [2018-11-07 09:38:45,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-11-07 09:38:45,764 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:38:45,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:38:45,764 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:38:45,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:45,765 INFO L82 PathProgramCache]: Analyzing trace with hash -81887667, now seen corresponding path program 1 times [2018-11-07 09:38:45,765 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:38:45,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:45,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:38:45,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:45,766 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:38:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:38:46,080 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:38:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:38:46,460 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:38:46,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:38:46,460 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:38:46,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:38:46,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:38:46,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:38:46,465 INFO L87 Difference]: Start difference. First operand 2209 states and 3833 transitions. Second operand 6 states. [2018-11-07 09:38:53,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:38:53,901 INFO L93 Difference]: Finished difference Result 5866 states and 10122 transitions. [2018-11-07 09:38:53,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:38:53,905 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-11-07 09:38:53,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:38:53,927 INFO L225 Difference]: With dead ends: 5866 [2018-11-07 09:38:53,927 INFO L226 Difference]: Without dead ends: 3663 [2018-11-07 09:38:53,936 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:38:53,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2018-11-07 09:38:54,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3639. [2018-11-07 09:38:54,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2018-11-07 09:38:54,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5517 transitions. [2018-11-07 09:38:54,038 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5517 transitions. Word has length 158 [2018-11-07 09:38:54,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:38:54,039 INFO L480 AbstractCegarLoop]: Abstraction has 3639 states and 5517 transitions. [2018-11-07 09:38:54,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:38:54,039 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5517 transitions. [2018-11-07 09:38:54,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-11-07 09:38:54,042 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:38:54,042 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:38:54,042 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:38:54,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:54,043 INFO L82 PathProgramCache]: Analyzing trace with hash -2044577259, now seen corresponding path program 1 times [2018-11-07 09:38:54,043 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:38:54,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:54,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:38:54,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:54,044 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:38:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:38:54,306 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:38:54,306 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:38:54,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:38:54,307 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:38:54,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:38:54,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:38:54,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:38:54,308 INFO L87 Difference]: Start difference. First operand 3639 states and 5517 transitions. Second operand 6 states. [2018-11-07 09:39:01,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:39:01,605 INFO L93 Difference]: Finished difference Result 8735 states and 13271 transitions. [2018-11-07 09:39:01,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:39:01,608 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-11-07 09:39:01,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:39:01,631 INFO L225 Difference]: With dead ends: 8735 [2018-11-07 09:39:01,631 INFO L226 Difference]: Without dead ends: 5102 [2018-11-07 09:39:01,643 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 09:39:01,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2018-11-07 09:39:01,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 5084. [2018-11-07 09:39:01,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5084 states. [2018-11-07 09:39:01,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5084 states to 5084 states and 6940 transitions. [2018-11-07 09:39:01,753 INFO L78 Accepts]: Start accepts. Automaton has 5084 states and 6940 transitions. Word has length 162 [2018-11-07 09:39:01,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:39:01,753 INFO L480 AbstractCegarLoop]: Abstraction has 5084 states and 6940 transitions. [2018-11-07 09:39:01,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:39:01,753 INFO L276 IsEmpty]: Start isEmpty. Operand 5084 states and 6940 transitions. [2018-11-07 09:39:01,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-11-07 09:39:01,758 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:39:01,758 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:39:01,758 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:39:01,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:39:01,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1457890224, now seen corresponding path program 1 times [2018-11-07 09:39:01,759 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:39:01,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:39:01,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:39:01,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:39:01,760 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:39:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:39:02,042 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:39:02,265 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:39:02,265 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:39:02,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:39:02,266 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:39:02,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:39:02,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:39:02,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:39:02,267 INFO L87 Difference]: Start difference. First operand 5084 states and 6940 transitions. Second operand 6 states. [2018-11-07 09:39:07,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:39:07,728 INFO L93 Difference]: Finished difference Result 13307 states and 18750 transitions. [2018-11-07 09:39:07,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:39:07,735 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 193 [2018-11-07 09:39:07,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:39:07,772 INFO L225 Difference]: With dead ends: 13307 [2018-11-07 09:39:07,772 INFO L226 Difference]: Without dead ends: 8229 [2018-11-07 09:39:07,787 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:39:07,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8229 states. [2018-11-07 09:39:07,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8229 to 8128. [2018-11-07 09:39:07,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8128 states. [2018-11-07 09:39:07,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8128 states to 8128 states and 10817 transitions. [2018-11-07 09:39:07,966 INFO L78 Accepts]: Start accepts. Automaton has 8128 states and 10817 transitions. Word has length 193 [2018-11-07 09:39:07,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:39:07,967 INFO L480 AbstractCegarLoop]: Abstraction has 8128 states and 10817 transitions. [2018-11-07 09:39:07,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:39:07,967 INFO L276 IsEmpty]: Start isEmpty. Operand 8128 states and 10817 transitions. [2018-11-07 09:39:07,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-11-07 09:39:07,975 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:39:07,975 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, 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] [2018-11-07 09:39:07,976 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:39:07,976 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:39:07,976 INFO L82 PathProgramCache]: Analyzing trace with hash 765440314, now seen corresponding path program 1 times [2018-11-07 09:39:07,976 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:39:07,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:39:07,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:39:07,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:39:07,977 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:39:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:39:08,336 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 112 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:39:08,336 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:39:08,336 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:39:08,337 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 227 with the following transitions: [2018-11-07 09:39:08,340 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], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2027], [2029], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:39:08,387 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:39:08,387 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:39:08,953 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:39:08,960 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:39:08,983 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:39:08,984 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:39:09,545 INFO L227 lantSequenceWeakener]: Weakened 217 states. On average, predicates are now at 78.25% of their original sizes. [2018-11-07 09:39:09,546 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:39:09,792 INFO L415 sIntCurrentIteration]: We unified 225 AI predicates to 225 [2018-11-07 09:39:09,793 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:39:09,794 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:39:09,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 09:39:09,794 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:39:09,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:39:09,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:39:09,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:39:09,795 INFO L87 Difference]: Start difference. First operand 8128 states and 10817 transitions. Second operand 6 states. [2018-11-07 09:41:05,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:41:05,272 INFO L93 Difference]: Finished difference Result 16955 states and 22499 transitions. [2018-11-07 09:41:05,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:41:05,272 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 226 [2018-11-07 09:41:05,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:41:05,304 INFO L225 Difference]: With dead ends: 16955 [2018-11-07 09:41:05,304 INFO L226 Difference]: Without dead ends: 8833 [2018-11-07 09:41:05,321 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 226 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:41:05,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8833 states. [2018-11-07 09:41:05,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8833 to 8831. [2018-11-07 09:41:05,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8831 states. [2018-11-07 09:41:05,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8831 states to 8831 states and 11532 transitions. [2018-11-07 09:41:05,478 INFO L78 Accepts]: Start accepts. Automaton has 8831 states and 11532 transitions. Word has length 226 [2018-11-07 09:41:05,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:41:05,478 INFO L480 AbstractCegarLoop]: Abstraction has 8831 states and 11532 transitions. [2018-11-07 09:41:05,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:41:05,479 INFO L276 IsEmpty]: Start isEmpty. Operand 8831 states and 11532 transitions. [2018-11-07 09:41:05,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-11-07 09:41:05,490 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:41:05,491 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:41:05,491 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:41:05,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:41:05,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1582089628, now seen corresponding path program 1 times [2018-11-07 09:41:05,492 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:41:05,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:41:05,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:41:05,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:41:05,493 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:41:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:41:06,321 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 227 proven. 171 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:41:06,321 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:41:06,322 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:41:06,322 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 414 with the following transitions: [2018-11-07 09:41:06,323 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], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2027], [2029], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2201], [2205], [2209], [2213], [2217], [2221], [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], [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] [2018-11-07 09:41:06,332 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:41:06,333 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:41:06,588 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:41:06,588 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:41:06,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:41:06,596 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:41:07,005 INFO L227 lantSequenceWeakener]: Weakened 410 states. On average, predicates are now at 77.85% of their original sizes. [2018-11-07 09:41:07,005 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:41:07,715 INFO L415 sIntCurrentIteration]: We unified 412 AI predicates to 412 [2018-11-07 09:41:07,715 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:41:07,715 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:41:07,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2018-11-07 09:41:07,716 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:41:07,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:41:07,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:41:07,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:41:07,717 INFO L87 Difference]: Start difference. First operand 8831 states and 11532 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown