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/Problem05_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 13:23:09,096 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 13:23:09,098 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 13:23:09,110 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 13:23:09,110 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 13:23:09,111 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 13:23:09,113 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 13:23:09,115 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 13:23:09,116 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 13:23:09,117 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 13:23:09,118 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 13:23:09,118 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 13:23:09,119 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 13:23:09,120 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 13:23:09,121 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 13:23:09,122 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 13:23:09,123 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 13:23:09,125 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 13:23:09,127 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 13:23:09,128 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 13:23:09,130 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 13:23:09,131 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 13:23:09,133 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 13:23:09,134 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 13:23:09,134 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 13:23:09,135 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 13:23:09,136 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 13:23:09,137 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 13:23:09,137 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 13:23:09,139 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 13:23:09,139 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 13:23:09,140 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 13:23:09,140 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 13:23:09,140 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 13:23:09,141 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 13:23:09,142 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 13:23:09,142 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 13:23:09,157 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 13:23:09,158 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 13:23:09,159 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 13:23:09,159 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 13:23:09,159 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 13:23:09,159 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 13:23:09,159 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 13:23:09,160 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 13:23:09,160 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 13:23:09,160 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 13:23:09,160 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 13:23:09,160 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 13:23:09,161 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 13:23:09,161 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 13:23:09,161 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 13:23:09,162 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 13:23:09,162 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 13:23:09,162 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 13:23:09,162 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 13:23:09,162 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 13:23:09,163 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 13:23:09,163 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 13:23:09,163 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 13:23:09,163 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 13:23:09,163 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 13:23:09,164 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 13:23:09,164 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 13:23:09,164 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 13:23:09,164 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 13:23:09,164 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 13:23:09,164 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 13:23:09,165 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 13:23:09,165 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 13:23:09,165 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 13:23:09,207 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 13:23:09,220 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 13:23:09,224 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 13:23:09,226 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 13:23:09,226 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 13:23:09,227 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label17_true-unreach-call.c [2018-11-07 13:23:09,283 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7a3b76a3/7027679186b24f6c984a898e22ce709d/FLAGbc294215b [2018-11-07 13:23:10,223 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 13:23:10,224 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem05_label17_true-unreach-call.c [2018-11-07 13:23:10,271 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7a3b76a3/7027679186b24f6c984a898e22ce709d/FLAGbc294215b [2018-11-07 13:23:10,286 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7a3b76a3/7027679186b24f6c984a898e22ce709d [2018-11-07 13:23:10,300 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 13:23:10,302 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 13:23:10,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 13:23:10,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 13:23:10,311 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 13:23:10,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:23:10" (1/1) ... [2018-11-07 13:23:10,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31dffc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:10, skipping insertion in model container [2018-11-07 13:23:10,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:23:10" (1/1) ... [2018-11-07 13:23:10,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 13:23:10,593 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 13:23:12,907 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 13:23:12,913 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 13:23:14,519 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 13:23:14,612 INFO L193 MainTranslator]: Completed translation [2018-11-07 13:23:14,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:14 WrapperNode [2018-11-07 13:23:14,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 13:23:14,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 13:23:14,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 13:23:14,614 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 13:23:14,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:14" (1/1) ... [2018-11-07 13:23:15,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:14" (1/1) ... [2018-11-07 13:23:15,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 13:23:15,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 13:23:15,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 13:23:15,159 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 13:23:15,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:14" (1/1) ... [2018-11-07 13:23:15,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:14" (1/1) ... [2018-11-07 13:23:15,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:14" (1/1) ... [2018-11-07 13:23:15,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:14" (1/1) ... [2018-11-07 13:23:15,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:14" (1/1) ... [2018-11-07 13:23:15,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:14" (1/1) ... [2018-11-07 13:23:15,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:14" (1/1) ... [2018-11-07 13:23:15,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 13:23:15,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 13:23:15,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 13:23:15,605 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 13:23:15,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:14" (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 13:23:15,676 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 13:23:15,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 13:23:15,677 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2018-11-07 13:23:15,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2018-11-07 13:23:15,677 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 13:23:15,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 13:23:15,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 13:23:15,678 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2018-11-07 13:23:15,678 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2018-11-07 13:23:15,678 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 13:23:15,678 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 13:23:15,678 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 13:23:15,679 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 13:23:15,679 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 13:23:15,679 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 13:23:15,679 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 13:23:15,679 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 13:23:15,679 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 13:23:15,680 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 13:23:15,680 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 13:23:15,680 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 13:23:15,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 13:23:15,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 13:23:30,243 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 13:23:30,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:23:30 BoogieIcfgContainer [2018-11-07 13:23:30,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 13:23:30,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 13:23:30,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 13:23:30,248 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 13:23:30,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:23:10" (1/3) ... [2018-11-07 13:23:30,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebb8451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:23:30, skipping insertion in model container [2018-11-07 13:23:30,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:23:14" (2/3) ... [2018-11-07 13:23:30,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebb8451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:23:30, skipping insertion in model container [2018-11-07 13:23:30,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:23:30" (3/3) ... [2018-11-07 13:23:30,252 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label17_true-unreach-call.c [2018-11-07 13:23:30,261 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 13:23:30,272 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 13:23:30,291 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 13:23:30,346 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 13:23:30,346 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 13:23:30,346 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 13:23:30,346 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 13:23:30,346 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 13:23:30,346 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 13:23:30,346 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 13:23:30,347 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 13:23:30,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states. [2018-11-07 13:23:30,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1693 [2018-11-07 13:23:30,522 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:23:30,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:23:30,530 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:23:30,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:23:30,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1010568477, now seen corresponding path program 1 times [2018-11-07 13:23:30,539 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:23:30,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:23:30,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:23:30,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:23:30,594 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:23:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:23:32,913 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 13:23:36,586 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 13:23:36,588 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 13:23:36,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 13:23:36,589 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:23:36,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 13:23:36,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 13:23:36,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 13:23:36,616 INFO L87 Difference]: Start difference. First operand 2223 states. Second operand 3 states. [2018-11-07 13:23:50,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:23:50,531 INFO L93 Difference]: Finished difference Result 6320 states and 11908 transitions. [2018-11-07 13:23:50,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 13:23:50,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1692 [2018-11-07 13:23:50,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:23:50,605 INFO L225 Difference]: With dead ends: 6320 [2018-11-07 13:23:50,605 INFO L226 Difference]: Without dead ends: 4095 [2018-11-07 13:23:50,633 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 9 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 13:23:50,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4095 states. [2018-11-07 13:23:51,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4095 to 4027. [2018-11-07 13:23:51,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4027 states. [2018-11-07 13:23:51,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4027 states to 4027 states and 7472 transitions. [2018-11-07 13:23:51,033 INFO L78 Accepts]: Start accepts. Automaton has 4027 states and 7472 transitions. Word has length 1692 [2018-11-07 13:23:51,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:23:51,042 INFO L480 AbstractCegarLoop]: Abstraction has 4027 states and 7472 transitions. [2018-11-07 13:23:51,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 13:23:51,042 INFO L276 IsEmpty]: Start isEmpty. Operand 4027 states and 7472 transitions. [2018-11-07 13:23:51,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1715 [2018-11-07 13:23:51,155 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:23:51,156 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:23:51,157 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:23:51,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:23:51,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1748001926, now seen corresponding path program 1 times [2018-11-07 13:23:51,158 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:23:51,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:23:51,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:23:51,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:23:51,161 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:23:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:23:51,651 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 13:23:53,177 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:23:53,177 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 13:23:53,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 13:23:53,178 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:23:53,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 13:23:53,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 13:23:53,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 13:23:53,183 INFO L87 Difference]: Start difference. First operand 4027 states and 7472 transitions. Second operand 6 states. [2018-11-07 13:24:11,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:24:11,164 INFO L93 Difference]: Finished difference Result 11899 states and 22361 transitions. [2018-11-07 13:24:11,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 13:24:11,169 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1714 [2018-11-07 13:24:11,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:24:11,227 INFO L225 Difference]: With dead ends: 11899 [2018-11-07 13:24:11,227 INFO L226 Difference]: Without dead ends: 7878 [2018-11-07 13:24:11,241 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 13:24:11,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7878 states. [2018-11-07 13:24:11,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7878 to 7794. [2018-11-07 13:24:11,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7794 states. [2018-11-07 13:24:11,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7794 states to 7794 states and 13598 transitions. [2018-11-07 13:24:11,506 INFO L78 Accepts]: Start accepts. Automaton has 7794 states and 13598 transitions. Word has length 1714 [2018-11-07 13:24:11,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:24:11,507 INFO L480 AbstractCegarLoop]: Abstraction has 7794 states and 13598 transitions. [2018-11-07 13:24:11,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 13:24:11,507 INFO L276 IsEmpty]: Start isEmpty. Operand 7794 states and 13598 transitions. [2018-11-07 13:24:11,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1726 [2018-11-07 13:24:11,563 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:24:11,565 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:24:11,565 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:24:11,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:24:11,567 INFO L82 PathProgramCache]: Analyzing trace with hash 462600098, now seen corresponding path program 1 times [2018-11-07 13:24:11,567 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:24:11,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:24:11,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:24:11,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:24:11,572 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:24:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:24:13,598 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-11-07 13:24:16,454 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:24:16,455 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 13:24:16,455 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 13:24:16,457 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1726 with the following transitions: [2018-11-07 13:24:16,465 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [20], [24], [28], [32], [36], [40], [44], [48], [52], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [162], [173], [177], [181], [185], [189], [193], [197], [201], [205], [209], [213], [217], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [288], [292], [296], [307], [311], [315], [326], [330], [334], [338], [342], [346], [350], [354], [358], [362], [366], [370], [374], [378], [382], [386], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], 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[8150], [8154], [8158], [8162], [8166], [8170], [8174], [8178], [8182], [8193], [8204], [8208], [8212], [8216], [8220], [8224], [8228], [8232], [8236], [8247], [8251], [8255], [8259], [8263], [8274], [8278], [8282], [8286], [8290], [8294], [8298], [8302], [8313], [8317], [8321], [8325], [8329], [8333], [8344], [8348], [8359], [8363], [8367], [8371], [8382], [8386], [8390], [8394], [8398], [8402], [8406], [8417], [8428], [8432], [8436], [8440], [8444], [8448], [8452], [8456], [8460], [8464], [8468], [8472], [8476], [8480], [8484], [8488], [8492], [8495], [8499], [8503], [8509], [8513], [8515], [8520], [8522], [8524], [8526], [8528], [8530], [8532], [8534], [8535], [8536], [8538], [8539] [2018-11-07 13:24:16,601 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 13:24:16,601 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 13:24:26,747 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 13:24:26,749 INFO L272 AbstractInterpreter]: Visited 1692 different actions 1692 times. Never merged. Never widened. Never found a fixpoint. Largest state had 32 variables. [2018-11-07 13:24:26,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:24:26,793 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 13:24:34,097 INFO L227 lantSequenceWeakener]: Weakened 1709 states. On average, predicates are now at 70.07% of their original sizes. [2018-11-07 13:24:34,097 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 13:24:41,844 INFO L415 sIntCurrentIteration]: We unified 1724 AI predicates to 1724 [2018-11-07 13:24:41,844 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 13:24:41,846 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 13:24:41,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [26] imperfect sequences [7] total 31 [2018-11-07 13:24:41,847 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:24:41,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-07 13:24:41,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-07 13:24:41,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2018-11-07 13:24:41,851 INFO L87 Difference]: Start difference. First operand 7794 states and 13598 transitions. Second operand 26 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown