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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:49:51,006 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:49:51,008 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:49:51,020 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:49:51,021 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:49:51,022 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:49:51,023 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:49:51,025 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:49:51,026 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:49:51,027 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:49:51,028 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:49:51,028 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:49:51,029 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:49:51,030 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:49:51,031 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:49:51,032 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:49:51,033 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:49:51,035 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:49:51,037 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:49:51,038 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:49:51,039 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:49:51,040 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:49:51,043 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:49:51,043 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:49:51,043 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:49:51,044 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:49:51,048 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:49:51,049 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:49:51,050 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:49:51,053 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:49:51,053 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:49:51,054 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:49:51,054 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:49:51,057 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:49:51,059 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:49:51,059 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:49:51,060 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.epf [2018-11-07 15:49:51,084 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:49:51,084 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:49:51,085 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:49:51,085 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:49:51,086 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:49:51,086 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:49:51,086 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:49:51,086 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:49:51,087 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:49:51,087 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:49:51,087 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:49:51,087 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:49:51,088 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:49:51,088 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:49:51,088 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:49:51,088 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:49:51,089 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:49:51,089 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:49:51,089 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:49:51,089 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:49:51,089 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:49:51,090 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:49:51,090 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:49:51,090 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:49:51,090 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:49:51,091 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:49:51,091 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:49:51,091 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:49:51,091 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:49:51,091 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:49:51,092 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:49:51,092 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:49:51,092 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:49:51,092 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:49:51,156 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:49:51,173 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:49:51,179 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:49:51,181 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:49:51,181 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:49:51,182 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label01_true-unreach-call.c [2018-11-07 15:49:51,253 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74da54765/6ed2ec0f3bc747128c10a4c404ef2291/FLAG29da168a7 [2018-11-07 15:49:52,146 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:49:52,147 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label01_true-unreach-call.c [2018-11-07 15:49:52,191 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74da54765/6ed2ec0f3bc747128c10a4c404ef2291/FLAG29da168a7 [2018-11-07 15:49:52,208 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74da54765/6ed2ec0f3bc747128c10a4c404ef2291 [2018-11-07 15:49:52,221 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:49:52,223 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:49:52,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:49:52,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:49:52,228 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:49:52,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:49:52" (1/1) ... [2018-11-07 15:49:52,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193d11b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:52, skipping insertion in model container [2018-11-07 15:49:52,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:49:52" (1/1) ... [2018-11-07 15:49:52,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:49:52,496 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:49:54,442 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:49:54,447 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:49:55,501 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:49:55,556 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:49:55,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:55 WrapperNode [2018-11-07 15:49:55,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:49:55,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:49:55,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:49:55,558 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:49:55,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:55" (1/1) ... [2018-11-07 15:49:56,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:55" (1/1) ... [2018-11-07 15:49:56,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:49:56,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:49:56,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:49:56,097 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:49:56,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:55" (1/1) ... [2018-11-07 15:49:56,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:55" (1/1) ... [2018-11-07 15:49:56,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:55" (1/1) ... [2018-11-07 15:49:56,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:55" (1/1) ... [2018-11-07 15:49:56,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:55" (1/1) ... [2018-11-07 15:49:56,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:55" (1/1) ... [2018-11-07 15:49:56,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:55" (1/1) ... [2018-11-07 15:49:56,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:49:56,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:49:56,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:49:56,548 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:49:56,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:55" (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 15:49:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:49:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:49:56,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:49:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 15:49:56,615 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 15:49:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 15:49:56,615 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 15:49:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 15:49:56,616 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 15:49:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 15:49:56,616 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 15:49:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:49:56,617 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:49:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:49:56,619 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:49:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:49:56,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:49:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:49:56,620 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:50:11,510 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:50:11,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:50:11 BoogieIcfgContainer [2018-11-07 15:50:11,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:50:11,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:50:11,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:50:11,516 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:50:11,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:49:52" (1/3) ... [2018-11-07 15:50:11,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73eb9f7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:50:11, skipping insertion in model container [2018-11-07 15:50:11,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:49:55" (2/3) ... [2018-11-07 15:50:11,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73eb9f7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:50:11, skipping insertion in model container [2018-11-07 15:50:11,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:50:11" (3/3) ... [2018-11-07 15:50:11,520 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label01_true-unreach-call.c [2018-11-07 15:50:11,529 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:50:11,540 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:50:11,556 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:50:11,609 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:50:11,609 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:50:11,609 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:50:11,609 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:50:11,610 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:50:11,610 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:50:11,610 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:50:11,610 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:50:11,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 15:50:11,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-11-07 15:50:11,676 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:50:11,678 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:50:11,680 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:50:11,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:50:11,686 INFO L82 PathProgramCache]: Analyzing trace with hash -901357788, now seen corresponding path program 1 times [2018-11-07 15:50:11,689 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:50:11,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:50:11,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:50:11,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:50:11,740 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:50:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:50:12,293 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 15:50:12,296 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:50:12,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:50:12,296 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:50:12,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:50:12,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:50:12,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:50:12,322 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-07 15:50:25,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:50:25,374 INFO L93 Difference]: Finished difference Result 4995 states and 9413 transitions. [2018-11-07 15:50:25,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:50:25,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2018-11-07 15:50:25,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:50:25,421 INFO L225 Difference]: With dead ends: 4995 [2018-11-07 15:50:25,422 INFO L226 Difference]: Without dead ends: 3215 [2018-11-07 15:50:25,434 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 15:50:25,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2018-11-07 15:50:25,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 3213. [2018-11-07 15:50:25,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3213 states. [2018-11-07 15:50:25,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3213 states to 3213 states and 5833 transitions. [2018-11-07 15:50:25,637 INFO L78 Accepts]: Start accepts. Automaton has 3213 states and 5833 transitions. Word has length 70 [2018-11-07 15:50:25,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:50:25,639 INFO L480 AbstractCegarLoop]: Abstraction has 3213 states and 5833 transitions. [2018-11-07 15:50:25,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:50:25,640 INFO L276 IsEmpty]: Start isEmpty. Operand 3213 states and 5833 transitions. [2018-11-07 15:50:25,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-11-07 15:50:25,654 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:50:25,655 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, 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 15:50:25,655 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:50:25,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:50:25,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1756808487, now seen corresponding path program 1 times [2018-11-07 15:50:25,656 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:50:25,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:50:25,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:50:25,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:50:25,659 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:50:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:50:25,938 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:50:25,938 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:50:25,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:50:25,939 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:50:25,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:50:25,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:50:25,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:50:25,942 INFO L87 Difference]: Start difference. First operand 3213 states and 5833 transitions. Second operand 5 states. [2018-11-07 15:50:52,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:50:52,813 INFO L93 Difference]: Finished difference Result 12251 states and 22705 transitions. [2018-11-07 15:50:52,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 15:50:52,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2018-11-07 15:50:52,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:50:52,870 INFO L225 Difference]: With dead ends: 12251 [2018-11-07 15:50:52,870 INFO L226 Difference]: Without dead ends: 9044 [2018-11-07 15:50:52,885 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:50:52,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9044 states. [2018-11-07 15:50:53,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9044 to 8961. [2018-11-07 15:50:53,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8961 states. [2018-11-07 15:50:53,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8961 states to 8961 states and 13238 transitions. [2018-11-07 15:50:53,163 INFO L78 Accepts]: Start accepts. Automaton has 8961 states and 13238 transitions. Word has length 144 [2018-11-07 15:50:53,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:50:53,163 INFO L480 AbstractCegarLoop]: Abstraction has 8961 states and 13238 transitions. [2018-11-07 15:50:53,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:50:53,164 INFO L276 IsEmpty]: Start isEmpty. Operand 8961 states and 13238 transitions. [2018-11-07 15:50:53,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-07 15:50:53,173 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:50:53,173 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, 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 15:50:53,173 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:50:53,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:50:53,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1510620445, now seen corresponding path program 1 times [2018-11-07 15:50:53,174 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:50:53,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:50:53,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:50:53,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:50:53,180 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:50:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:50:53,510 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:50:53,568 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:50:53,568 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:50:53,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:50:53,568 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:50:53,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:50:53,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:50:53,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:50:53,570 INFO L87 Difference]: Start difference. First operand 8961 states and 13238 transitions. Second operand 6 states. [2018-11-07 15:51:09,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:51:09,673 INFO L93 Difference]: Finished difference Result 21233 states and 31871 transitions. [2018-11-07 15:51:09,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:51:09,674 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-11-07 15:51:09,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:51:09,728 INFO L225 Difference]: With dead ends: 21233 [2018-11-07 15:51:09,728 INFO L226 Difference]: Without dead ends: 12278 [2018-11-07 15:51:09,753 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 15:51:09,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12278 states. [2018-11-07 15:51:10,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12278 to 12111. [2018-11-07 15:51:10,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12111 states. [2018-11-07 15:51:10,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12111 states to 12111 states and 17269 transitions. [2018-11-07 15:51:10,061 INFO L78 Accepts]: Start accepts. Automaton has 12111 states and 17269 transitions. Word has length 149 [2018-11-07 15:51:10,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:51:10,062 INFO L480 AbstractCegarLoop]: Abstraction has 12111 states and 17269 transitions. [2018-11-07 15:51:10,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:51:10,062 INFO L276 IsEmpty]: Start isEmpty. Operand 12111 states and 17269 transitions. [2018-11-07 15:51:10,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-11-07 15:51:10,067 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:51:10,067 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, 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] [2018-11-07 15:51:10,067 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:51:10,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:51:10,071 INFO L82 PathProgramCache]: Analyzing trace with hash -981513705, now seen corresponding path program 1 times [2018-11-07 15:51:10,071 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:51:10,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:51:10,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:51:10,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:51:10,074 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:51:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:51:10,333 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:51:10,333 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:51:10,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:51:10,333 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:51:10,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:51:10,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:51:10,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:51:10,335 INFO L87 Difference]: Start difference. First operand 12111 states and 17269 transitions. Second operand 6 states. [2018-11-07 15:51:24,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:51:24,394 INFO L93 Difference]: Finished difference Result 36915 states and 53756 transitions. [2018-11-07 15:51:24,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 15:51:24,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2018-11-07 15:51:24,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:51:24,687 INFO L225 Difference]: With dead ends: 36915 [2018-11-07 15:51:24,687 INFO L226 Difference]: Without dead ends: 24810 [2018-11-07 15:51:24,719 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 15:51:24,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24810 states. [2018-11-07 15:51:25,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24810 to 24400. [2018-11-07 15:51:25,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24400 states. [2018-11-07 15:51:25,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24400 states to 24400 states and 34098 transitions. [2018-11-07 15:51:25,179 INFO L78 Accepts]: Start accepts. Automaton has 24400 states and 34098 transitions. Word has length 152 [2018-11-07 15:51:25,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:51:25,179 INFO L480 AbstractCegarLoop]: Abstraction has 24400 states and 34098 transitions. [2018-11-07 15:51:25,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:51:25,180 INFO L276 IsEmpty]: Start isEmpty. Operand 24400 states and 34098 transitions. [2018-11-07 15:51:25,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-11-07 15:51:25,183 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:51:25,183 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, 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 15:51:25,183 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:51:25,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:51:25,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1158818945, now seen corresponding path program 1 times [2018-11-07 15:51:25,184 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:51:25,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:51:25,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:51:25,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:51:25,185 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:51:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:51:25,468 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:51:25,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:51:25,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:51:25,469 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:51:25,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:51:25,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:51:25,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:51:25,470 INFO L87 Difference]: Start difference. First operand 24400 states and 34098 transitions. Second operand 5 states. [2018-11-07 15:51:42,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:51:42,917 INFO L93 Difference]: Finished difference Result 75641 states and 108695 transitions. [2018-11-07 15:51:42,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 15:51:42,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2018-11-07 15:51:42,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:51:43,080 INFO L225 Difference]: With dead ends: 75641 [2018-11-07 15:51:43,081 INFO L226 Difference]: Without dead ends: 51247 [2018-11-07 15:51:43,134 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:51:43,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51247 states. [2018-11-07 15:51:43,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51247 to 49410. [2018-11-07 15:51:43,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49410 states. [2018-11-07 15:51:44,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49410 states to 49410 states and 63889 transitions. [2018-11-07 15:51:44,028 INFO L78 Accepts]: Start accepts. Automaton has 49410 states and 63889 transitions. Word has length 172 [2018-11-07 15:51:44,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:51:44,028 INFO L480 AbstractCegarLoop]: Abstraction has 49410 states and 63889 transitions. [2018-11-07 15:51:44,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:51:44,030 INFO L276 IsEmpty]: Start isEmpty. Operand 49410 states and 63889 transitions. [2018-11-07 15:51:44,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-11-07 15:51:44,034 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:51:44,034 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, 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] [2018-11-07 15:51:44,035 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:51:44,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:51:44,035 INFO L82 PathProgramCache]: Analyzing trace with hash -594046821, now seen corresponding path program 1 times [2018-11-07 15:51:44,035 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:51:44,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:51:44,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:51:44,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:51:44,037 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:51:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:51:44,377 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:51:44,377 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:51:44,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:51:44,378 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:51:44,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:51:44,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:51:44,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:51:44,381 INFO L87 Difference]: Start difference. First operand 49410 states and 63889 transitions. Second operand 4 states. [2018-11-07 15:52:01,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:52:01,703 INFO L93 Difference]: Finished difference Result 181381 states and 252674 transitions. [2018-11-07 15:52:01,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:52:01,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 282 [2018-11-07 15:52:01,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:52:02,076 INFO L225 Difference]: With dead ends: 181381 [2018-11-07 15:52:02,077 INFO L226 Difference]: Without dead ends: 131977 [2018-11-07 15:52:02,211 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:52:02,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131977 states. [2018-11-07 15:52:04,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131977 to 131608. [2018-11-07 15:52:04,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131608 states. [2018-11-07 15:52:04,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131608 states to 131608 states and 174651 transitions. [2018-11-07 15:52:04,497 INFO L78 Accepts]: Start accepts. Automaton has 131608 states and 174651 transitions. Word has length 282 [2018-11-07 15:52:04,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:52:04,498 INFO L480 AbstractCegarLoop]: Abstraction has 131608 states and 174651 transitions. [2018-11-07 15:52:04,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:52:04,499 INFO L276 IsEmpty]: Start isEmpty. Operand 131608 states and 174651 transitions. [2018-11-07 15:52:04,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2018-11-07 15:52:04,535 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:52:04,536 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, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:52:04,536 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:52:04,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:52:04,537 INFO L82 PathProgramCache]: Analyzing trace with hash -244829827, now seen corresponding path program 1 times [2018-11-07 15:52:04,537 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:52:04,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:52:04,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:52:04,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:52:04,538 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:52:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:52:06,336 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 404 proven. 164 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2018-11-07 15:52:06,337 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:52:06,337 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:52:06,338 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 665 with the following transitions: [2018-11-07 15:52:06,341 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5602], [5610], [5618], [5626], [5634], [5642], [5650], [5658], [5666], [5674], [5682], [5686], [5688], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6183], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6420], [6421], [6425], [6429], [6432], [6437], [6439], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 15:52:06,407 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:52:06,407 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:52:07,358 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 15:52:07,851 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:52:07,853 INFO L272 AbstractInterpreter]: Visited 221 different actions 221 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 15:52:07,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:52:07,897 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:52:09,700 INFO L227 lantSequenceWeakener]: Weakened 650 states. On average, predicates are now at 75.31% of their original sizes. [2018-11-07 15:52:09,701 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:52:10,053 INFO L415 sIntCurrentIteration]: We unified 663 AI predicates to 663 [2018-11-07 15:52:10,054 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:52:10,055 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:52:10,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 15:52:10,055 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:52:10,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 15:52:10,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 15:52:10,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 15:52:10,057 INFO L87 Difference]: Start difference. First operand 131608 states and 174651 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown