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/Problem12_label45_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:45:09,228 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:45:09,230 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:45:09,246 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:45:09,246 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:45:09,247 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:45:09,249 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:45:09,251 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:45:09,254 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:45:09,255 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:45:09,256 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:45:09,257 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:45:09,258 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:45:09,259 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:45:09,266 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:45:09,268 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:45:09,269 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:45:09,271 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:45:09,275 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:45:09,276 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:45:09,279 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:45:09,280 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:45:09,283 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:45:09,283 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:45:09,284 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:45:09,284 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:45:09,285 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:45:09,286 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:45:09,289 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:45:09,290 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:45:09,290 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:45:09,292 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:45:09,293 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:45:09,293 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:45:09,295 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:45:09,296 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:45:09,296 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 14:45:09,310 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:45:09,310 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:45:09,311 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:45:09,311 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:45:09,311 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:45:09,312 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:45:09,312 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:45:09,312 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:45:09,312 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:45:09,312 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:45:09,313 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:45:09,313 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:45:09,313 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:45:09,314 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:45:09,314 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:45:09,314 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:45:09,314 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:45:09,315 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:45:09,315 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:45:09,315 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:45:09,315 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:45:09,315 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:45:09,315 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:45:09,316 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:45:09,316 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:45:09,316 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:45:09,316 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:45:09,316 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:45:09,317 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:45:09,317 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:45:09,317 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:45:09,317 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:45:09,317 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:45:09,318 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:45:09,383 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:45:09,395 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:45:09,399 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:45:09,400 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:45:09,401 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:45:09,401 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label45_true-unreach-call.c [2018-11-07 14:45:09,461 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1d69b8df/08dd5fa8e9094bf78c7a9ae1c0093ce4/FLAG4f8396a7c [2018-11-07 14:45:10,219 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:45:10,220 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label45_true-unreach-call.c [2018-11-07 14:45:10,256 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1d69b8df/08dd5fa8e9094bf78c7a9ae1c0093ce4/FLAG4f8396a7c [2018-11-07 14:45:10,272 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1d69b8df/08dd5fa8e9094bf78c7a9ae1c0093ce4 [2018-11-07 14:45:10,284 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:45:10,286 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:45:10,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:45:10,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:45:10,292 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:45:10,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:45:10" (1/1) ... [2018-11-07 14:45:10,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9260898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:10, skipping insertion in model container [2018-11-07 14:45:10,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:45:10" (1/1) ... [2018-11-07 14:45:10,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:45:10,498 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:45:11,825 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:45:11,829 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:45:12,383 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:45:12,419 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:45:12,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:12 WrapperNode [2018-11-07 14:45:12,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:45:12,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:45:12,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:45:12,422 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:45:12,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:12" (1/1) ... [2018-11-07 14:45:12,735 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:12" (1/1) ... [2018-11-07 14:45:12,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:45:12,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:45:12,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:45:12,746 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:45:12,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:12" (1/1) ... [2018-11-07 14:45:12,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:12" (1/1) ... [2018-11-07 14:45:12,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:12" (1/1) ... [2018-11-07 14:45:12,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:12" (1/1) ... [2018-11-07 14:45:12,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:12" (1/1) ... [2018-11-07 14:45:12,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:12" (1/1) ... [2018-11-07 14:45:12,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:12" (1/1) ... [2018-11-07 14:45:12,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:45:12,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:45:12,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:45:12,992 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:45:12,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:12" (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 14:45:13,066 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:45:13,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:45:13,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:45:13,067 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 14:45:13,067 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 14:45:13,068 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 14:45:13,068 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 14:45:13,068 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 14:45:13,068 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 14:45:13,068 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:45:13,068 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:45:13,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:45:13,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:45:13,070 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:45:13,071 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:45:22,108 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:45:22,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:45:22 BoogieIcfgContainer [2018-11-07 14:45:22,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:45:22,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:45:22,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:45:22,115 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:45:22,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:45:10" (1/3) ... [2018-11-07 14:45:22,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75dc64e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:45:22, skipping insertion in model container [2018-11-07 14:45:22,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:12" (2/3) ... [2018-11-07 14:45:22,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75dc64e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:45:22, skipping insertion in model container [2018-11-07 14:45:22,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:45:22" (3/3) ... [2018-11-07 14:45:22,118 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label45_true-unreach-call.c [2018-11-07 14:45:22,128 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:45:22,137 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:45:22,155 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:45:22,199 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:45:22,199 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:45:22,199 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:45:22,199 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:45:22,199 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:45:22,200 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:45:22,200 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:45:22,200 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:45:22,347 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 14:45:22,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-07 14:45:22,357 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:45:22,358 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] [2018-11-07 14:45:22,361 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:45:22,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:45:22,381 INFO L82 PathProgramCache]: Analyzing trace with hash -427450892, now seen corresponding path program 1 times [2018-11-07 14:45:22,383 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:45:22,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:45:22,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:45:22,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:45:22,439 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:45:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:45:22,973 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:45:23,100 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 14:45:23,103 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:45:23,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 14:45:23,104 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:45:23,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:45:23,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:45:23,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:45:23,130 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 14:45:30,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:45:30,564 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 14:45:30,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:45:30,566 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2018-11-07 14:45:30,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:45:30,600 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 14:45:30,600 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 14:45:30,611 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 14:45:30,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 14:45:30,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 14:45:30,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 14:45:30,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2861 transitions. [2018-11-07 14:45:30,762 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2861 transitions. Word has length 58 [2018-11-07 14:45:30,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:45:30,762 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2861 transitions. [2018-11-07 14:45:30,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:45:30,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2861 transitions. [2018-11-07 14:45:30,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-07 14:45:30,774 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:45:30,774 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:45:30,775 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:45:30,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:45:30,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1706095754, now seen corresponding path program 1 times [2018-11-07 14:45:30,775 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:45:30,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:45:30,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:45:30,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:45:30,777 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:45:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:45:31,022 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:45:31,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:45:31,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:45:31,023 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:45:31,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:45:31,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:45:31,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:45:31,026 INFO L87 Difference]: Start difference. First operand 1604 states and 2861 transitions. Second operand 4 states. [2018-11-07 14:45:46,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:45:46,187 INFO L93 Difference]: Finished difference Result 6274 states and 11428 transitions. [2018-11-07 14:45:46,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:45:46,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2018-11-07 14:45:46,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:45:46,232 INFO L225 Difference]: With dead ends: 6274 [2018-11-07 14:45:46,232 INFO L226 Difference]: Without dead ends: 4676 [2018-11-07 14:45:46,245 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:45:46,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4676 states. [2018-11-07 14:45:46,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4676 to 4676. [2018-11-07 14:45:46,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4676 states. [2018-11-07 14:45:46,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4676 states to 4676 states and 7980 transitions. [2018-11-07 14:45:46,505 INFO L78 Accepts]: Start accepts. Automaton has 4676 states and 7980 transitions. Word has length 134 [2018-11-07 14:45:46,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:45:46,506 INFO L480 AbstractCegarLoop]: Abstraction has 4676 states and 7980 transitions. [2018-11-07 14:45:46,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:45:46,507 INFO L276 IsEmpty]: Start isEmpty. Operand 4676 states and 7980 transitions. [2018-11-07 14:45:46,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-11-07 14:45:46,527 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:45:46,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:45:46,528 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:45:46,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:45:46,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1738242550, now seen corresponding path program 1 times [2018-11-07 14:45:46,528 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:45:46,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:45:46,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:45:46,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:45:46,532 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:45:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:45:46,852 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:45:46,852 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:45:46,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:45:46,852 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:45:46,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:45:46,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:45:46,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:45:46,854 INFO L87 Difference]: Start difference. First operand 4676 states and 7980 transitions. Second operand 6 states. [2018-11-07 14:45:54,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:45:54,600 INFO L93 Difference]: Finished difference Result 14179 states and 24917 transitions. [2018-11-07 14:45:54,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:45:54,601 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2018-11-07 14:45:54,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:45:54,656 INFO L225 Difference]: With dead ends: 14179 [2018-11-07 14:45:54,657 INFO L226 Difference]: Without dead ends: 9509 [2018-11-07 14:45:54,675 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:45:54,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9509 states. [2018-11-07 14:45:54,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9509 to 9424. [2018-11-07 14:45:54,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9424 states. [2018-11-07 14:45:54,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9424 states to 9424 states and 15810 transitions. [2018-11-07 14:45:54,957 INFO L78 Accepts]: Start accepts. Automaton has 9424 states and 15810 transitions. Word has length 172 [2018-11-07 14:45:54,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:45:54,958 INFO L480 AbstractCegarLoop]: Abstraction has 9424 states and 15810 transitions. [2018-11-07 14:45:54,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:45:54,958 INFO L276 IsEmpty]: Start isEmpty. Operand 9424 states and 15810 transitions. [2018-11-07 14:45:54,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-11-07 14:45:54,970 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:45:54,970 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:45:54,970 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:45:54,971 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:45:54,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1389226247, now seen corresponding path program 1 times [2018-11-07 14:45:54,971 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:45:54,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:45:54,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:45:54,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:45:54,973 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:45:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:45:55,400 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:45:55,400 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:45:55,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:45:55,400 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:45:55,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:45:55,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:45:55,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:45:55,402 INFO L87 Difference]: Start difference. First operand 9424 states and 15810 transitions. Second operand 6 states. [2018-11-07 14:46:09,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:46:09,836 INFO L93 Difference]: Finished difference Result 34209 states and 61589 transitions. [2018-11-07 14:46:09,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 14:46:09,837 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 199 [2018-11-07 14:46:09,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:46:09,999 INFO L225 Difference]: With dead ends: 34209 [2018-11-07 14:46:09,999 INFO L226 Difference]: Without dead ends: 24791 [2018-11-07 14:46:10,092 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 14:46:10,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24791 states. [2018-11-07 14:46:10,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24791 to 24608. [2018-11-07 14:46:10,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24608 states. [2018-11-07 14:46:10,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24608 states to 24608 states and 39305 transitions. [2018-11-07 14:46:10,891 INFO L78 Accepts]: Start accepts. Automaton has 24608 states and 39305 transitions. Word has length 199 [2018-11-07 14:46:10,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:46:10,892 INFO L480 AbstractCegarLoop]: Abstraction has 24608 states and 39305 transitions. [2018-11-07 14:46:10,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:46:10,892 INFO L276 IsEmpty]: Start isEmpty. Operand 24608 states and 39305 transitions. [2018-11-07 14:46:10,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-11-07 14:46:10,903 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:46:10,904 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:46:10,905 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:46:10,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:46:10,906 INFO L82 PathProgramCache]: Analyzing trace with hash 446131319, now seen corresponding path program 1 times [2018-11-07 14:46:10,906 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:46:10,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:46:10,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:46:10,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:46:10,907 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:46:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:46:11,157 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:46:11,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:46:11,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:46:11,158 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:46:11,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:46:11,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:46:11,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:46:11,160 INFO L87 Difference]: Start difference. First operand 24608 states and 39305 transitions. Second operand 4 states. [2018-11-07 14:46:23,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:46:23,190 INFO L93 Difference]: Finished difference Result 62467 states and 103119 transitions. [2018-11-07 14:46:23,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:46:23,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 207 [2018-11-07 14:46:23,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:46:23,386 INFO L225 Difference]: With dead ends: 62467 [2018-11-07 14:46:23,386 INFO L226 Difference]: Without dead ends: 37865 [2018-11-07 14:46:23,538 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 14:46:23,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37865 states. [2018-11-07 14:46:24,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37865 to 37097. [2018-11-07 14:46:24,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37097 states. [2018-11-07 14:46:24,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37097 states to 37097 states and 53722 transitions. [2018-11-07 14:46:24,614 INFO L78 Accepts]: Start accepts. Automaton has 37097 states and 53722 transitions. Word has length 207 [2018-11-07 14:46:24,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:46:24,615 INFO L480 AbstractCegarLoop]: Abstraction has 37097 states and 53722 transitions. [2018-11-07 14:46:24,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:46:24,615 INFO L276 IsEmpty]: Start isEmpty. Operand 37097 states and 53722 transitions. [2018-11-07 14:46:24,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-11-07 14:46:24,992 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:46:24,992 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:46:24,993 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:46:24,993 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:46:24,994 INFO L82 PathProgramCache]: Analyzing trace with hash -433421620, now seen corresponding path program 1 times [2018-11-07 14:46:24,994 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:46:24,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:46:24,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:46:24,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:46:24,995 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:46:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:46:25,432 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 102 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 14:46:25,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:46:25,433 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:46:25,434 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 349 with the following transitions: [2018-11-07 14:46:25,437 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2231], [2233], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2524], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2796], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 14:46:25,495 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:46:25,496 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:46:26,360 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:46:26,362 INFO L272 AbstractInterpreter]: Visited 184 different actions 184 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 14:46:26,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:46:26,419 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:46:27,321 INFO L227 lantSequenceWeakener]: Weakened 339 states. On average, predicates are now at 75.44% of their original sizes. [2018-11-07 14:46:27,321 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:46:27,960 INFO L415 sIntCurrentIteration]: We unified 347 AI predicates to 347 [2018-11-07 14:46:27,960 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:46:27,961 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:46:27,961 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 12 [2018-11-07 14:46:27,962 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:46:27,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 14:46:27,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 14:46:27,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:46:27,963 INFO L87 Difference]: Start difference. First operand 37097 states and 53722 transitions. Second operand 9 states. [2018-11-07 14:46:37,220 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown