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/Problem03_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 12:57:38,227 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 12:57:38,229 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 12:57:38,241 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 12:57:38,241 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 12:57:38,243 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 12:57:38,245 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 12:57:38,247 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 12:57:38,250 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 12:57:38,251 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 12:57:38,252 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 12:57:38,254 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 12:57:38,255 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 12:57:38,256 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 12:57:38,257 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 12:57:38,258 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 12:57:38,259 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 12:57:38,261 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 12:57:38,263 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 12:57:38,264 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 12:57:38,265 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 12:57:38,267 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 12:57:38,269 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 12:57:38,269 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 12:57:38,270 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 12:57:38,271 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 12:57:38,272 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 12:57:38,273 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 12:57:38,273 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 12:57:38,274 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 12:57:38,275 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 12:57:38,275 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 12:57:38,276 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 12:57:38,276 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 12:57:38,277 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 12:57:38,278 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 12:57:38,278 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 12:57:38,309 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 12:57:38,309 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 12:57:38,313 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 12:57:38,313 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 12:57:38,314 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 12:57:38,314 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 12:57:38,314 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 12:57:38,314 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 12:57:38,314 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 12:57:38,315 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 12:57:38,315 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 12:57:38,315 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 12:57:38,318 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 12:57:38,318 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 12:57:38,319 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 12:57:38,319 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 12:57:38,319 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 12:57:38,319 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 12:57:38,319 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 12:57:38,319 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 12:57:38,320 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 12:57:38,320 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 12:57:38,320 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 12:57:38,320 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 12:57:38,321 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 12:57:38,321 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 12:57:38,321 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 12:57:38,321 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 12:57:38,321 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 12:57:38,322 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 12:57:38,322 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 12:57:38,322 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 12:57:38,322 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 12:57:38,322 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 12:57:38,379 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 12:57:38,394 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 12:57:38,397 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 12:57:38,399 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 12:57:38,399 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 12:57:38,400 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label02_true-unreach-call.c [2018-11-07 12:57:38,466 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/902e82ec3/abe23f00a0e7494b990a5e6617523dc4/FLAGb97bcdef7 [2018-11-07 12:57:39,135 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 12:57:39,136 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label02_true-unreach-call.c [2018-11-07 12:57:39,153 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/902e82ec3/abe23f00a0e7494b990a5e6617523dc4/FLAGb97bcdef7 [2018-11-07 12:57:39,168 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/902e82ec3/abe23f00a0e7494b990a5e6617523dc4 [2018-11-07 12:57:39,180 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 12:57:39,181 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 12:57:39,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 12:57:39,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 12:57:39,187 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 12:57:39,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:57:39" (1/1) ... [2018-11-07 12:57:39,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673adebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:39, skipping insertion in model container [2018-11-07 12:57:39,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:57:39" (1/1) ... [2018-11-07 12:57:39,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 12:57:39,314 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 12:57:40,093 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:57:40,103 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 12:57:40,380 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:57:40,402 INFO L193 MainTranslator]: Completed translation [2018-11-07 12:57:40,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:40 WrapperNode [2018-11-07 12:57:40,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 12:57:40,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 12:57:40,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 12:57:40,404 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 12:57:40,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:40" (1/1) ... [2018-11-07 12:57:40,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:40" (1/1) ... [2018-11-07 12:57:40,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 12:57:40,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 12:57:40,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 12:57:40,606 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 12:57:40,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:40" (1/1) ... [2018-11-07 12:57:40,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:40" (1/1) ... [2018-11-07 12:57:40,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:40" (1/1) ... [2018-11-07 12:57:40,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:40" (1/1) ... [2018-11-07 12:57:40,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:40" (1/1) ... [2018-11-07 12:57:40,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:40" (1/1) ... [2018-11-07 12:57:40,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:40" (1/1) ... [2018-11-07 12:57:40,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 12:57:40,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 12:57:40,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 12:57:40,762 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 12:57:40,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:40" (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 12:57:40,834 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 12:57:40,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 12:57:40,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 12:57:40,835 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 12:57:40,835 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 12:57:40,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 12:57:40,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 12:57:40,835 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 12:57:40,836 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 12:57:46,543 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 12:57:46,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:57:46 BoogieIcfgContainer [2018-11-07 12:57:46,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 12:57:46,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 12:57:46,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 12:57:46,549 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 12:57:46,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:57:39" (1/3) ... [2018-11-07 12:57:46,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626ec42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:57:46, skipping insertion in model container [2018-11-07 12:57:46,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:40" (2/3) ... [2018-11-07 12:57:46,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626ec42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:57:46, skipping insertion in model container [2018-11-07 12:57:46,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:57:46" (3/3) ... [2018-11-07 12:57:46,554 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label02_true-unreach-call.c [2018-11-07 12:57:46,565 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 12:57:46,575 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 12:57:46,595 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 12:57:46,639 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 12:57:46,639 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 12:57:46,639 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 12:57:46,639 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 12:57:46,640 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 12:57:46,640 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 12:57:46,640 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 12:57:46,640 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 12:57:46,670 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 12:57:46,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-11-07 12:57:46,692 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:57:46,695 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] [2018-11-07 12:57:46,699 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:57:46,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:57:46,706 INFO L82 PathProgramCache]: Analyzing trace with hash -598377940, now seen corresponding path program 1 times [2018-11-07 12:57:46,709 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:57:46,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:57:46,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:57:46,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:57:46,773 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:57:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:57:47,761 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:57:47,988 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 12:57:47,990 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:57:47,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 12:57:47,991 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:57:47,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 12:57:48,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 12:57:48,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:57:48,018 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-07 12:57:50,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:57:50,413 INFO L93 Difference]: Finished difference Result 838 states and 1479 transitions. [2018-11-07 12:57:50,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 12:57:50,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2018-11-07 12:57:50,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:57:50,441 INFO L225 Difference]: With dead ends: 838 [2018-11-07 12:57:50,441 INFO L226 Difference]: Without dead ends: 524 [2018-11-07 12:57:50,449 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:57:50,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2018-11-07 12:57:50,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2018-11-07 12:57:50,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-11-07 12:57:50,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 890 transitions. [2018-11-07 12:57:50,543 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 890 transitions. Word has length 211 [2018-11-07 12:57:50,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:57:50,545 INFO L480 AbstractCegarLoop]: Abstraction has 522 states and 890 transitions. [2018-11-07 12:57:50,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 12:57:50,545 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 890 transitions. [2018-11-07 12:57:50,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-11-07 12:57:50,554 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:57:50,555 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 12:57:50,555 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:57:50,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:57:50,556 INFO L82 PathProgramCache]: Analyzing trace with hash 500762469, now seen corresponding path program 1 times [2018-11-07 12:57:50,556 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:57:50,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:57:50,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:57:50,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:57:50,558 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:57:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:57:50,928 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:57:50,928 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:57:50,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:57:50,928 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:57:50,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:57:50,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:57:50,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:57:50,933 INFO L87 Difference]: Start difference. First operand 522 states and 890 transitions. Second operand 6 states. [2018-11-07 12:57:51,746 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 12:57:54,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:57:54,609 INFO L93 Difference]: Finished difference Result 1581 states and 2759 transitions. [2018-11-07 12:57:54,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 12:57:54,611 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 221 [2018-11-07 12:57:54,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:57:54,627 INFO L225 Difference]: With dead ends: 1581 [2018-11-07 12:57:54,628 INFO L226 Difference]: Without dead ends: 1065 [2018-11-07 12:57:54,637 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 12:57:54,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2018-11-07 12:57:54,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1023. [2018-11-07 12:57:54,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-11-07 12:57:54,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1733 transitions. [2018-11-07 12:57:54,707 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1733 transitions. Word has length 221 [2018-11-07 12:57:54,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:57:54,707 INFO L480 AbstractCegarLoop]: Abstraction has 1023 states and 1733 transitions. [2018-11-07 12:57:54,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:57:54,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1733 transitions. [2018-11-07 12:57:54,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-07 12:57:54,714 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:57:54,715 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 12:57:54,715 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:57:54,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:57:54,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1880963624, now seen corresponding path program 1 times [2018-11-07 12:57:54,716 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:57:54,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:57:54,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:57:54,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:57:54,717 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:57:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:57:55,124 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:57:55,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:57:55,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 12:57:55,125 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:57:55,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 12:57:55,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 12:57:55,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:57:55,129 INFO L87 Difference]: Start difference. First operand 1023 states and 1733 transitions. Second operand 3 states. [2018-11-07 12:57:58,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:57:58,095 INFO L93 Difference]: Finished difference Result 2901 states and 5098 transitions. [2018-11-07 12:57:58,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 12:57:58,101 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2018-11-07 12:57:58,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:57:58,117 INFO L225 Difference]: With dead ends: 2901 [2018-11-07 12:57:58,118 INFO L226 Difference]: Without dead ends: 1884 [2018-11-07 12:57:58,123 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:57:58,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2018-11-07 12:57:58,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1864. [2018-11-07 12:57:58,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1864 states. [2018-11-07 12:57:58,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 3159 transitions. [2018-11-07 12:57:58,196 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 3159 transitions. Word has length 224 [2018-11-07 12:57:58,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:57:58,197 INFO L480 AbstractCegarLoop]: Abstraction has 1864 states and 3159 transitions. [2018-11-07 12:57:58,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 12:57:58,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 3159 transitions. [2018-11-07 12:57:58,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-11-07 12:57:58,206 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:57:58,207 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2018-11-07 12:57:58,207 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:57:58,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:57:58,207 INFO L82 PathProgramCache]: Analyzing trace with hash 651322454, now seen corresponding path program 1 times [2018-11-07 12:57:58,208 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:57:58,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:57:58,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:57:58,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:57:58,209 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:57:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:57:58,469 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:57:58,658 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 12:57:58,658 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:57:58,658 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:57:58,659 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 233 with the following transitions: [2018-11-07 12:57:58,662 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [16], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1137], [1145], [1149], [1151], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 12:57:58,732 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:57:58,733 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:58:17,456 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:58:17,458 INFO L272 AbstractInterpreter]: Visited 212 different actions 212 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 12:58:17,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:58:17,490 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:58:30,408 INFO L227 lantSequenceWeakener]: Weakened 221 states. On average, predicates are now at 75.47% of their original sizes. [2018-11-07 12:58:30,408 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:58:32,887 INFO L415 sIntCurrentIteration]: We unified 231 AI predicates to 231 [2018-11-07 12:58:32,888 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:58:32,889 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:58:32,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [5] total 28 [2018-11-07 12:58:32,889 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:58:32,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-07 12:58:32,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-07 12:58:32,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2018-11-07 12:58:32,891 INFO L87 Difference]: Start difference. First operand 1864 states and 3159 transitions. Second operand 25 states. [2018-11-07 12:59:30,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:59:30,355 INFO L93 Difference]: Finished difference Result 3932 states and 6645 transitions. [2018-11-07 12:59:30,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 12:59:30,355 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 232 [2018-11-07 12:59:30,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:59:30,366 INFO L225 Difference]: With dead ends: 3932 [2018-11-07 12:59:30,367 INFO L226 Difference]: Without dead ends: 2074 [2018-11-07 12:59:30,373 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 234 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2018-11-07 12:59:30,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2018-11-07 12:59:30,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 2072. [2018-11-07 12:59:30,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2072 states. [2018-11-07 12:59:30,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 3376 transitions. [2018-11-07 12:59:30,434 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 3376 transitions. Word has length 232 [2018-11-07 12:59:30,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:59:30,434 INFO L480 AbstractCegarLoop]: Abstraction has 2072 states and 3376 transitions. [2018-11-07 12:59:30,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-07 12:59:30,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 3376 transitions. [2018-11-07 12:59:30,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-11-07 12:59:30,443 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:59:30,444 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2018-11-07 12:59:30,444 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:59:30,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:59:30,445 INFO L82 PathProgramCache]: Analyzing trace with hash 460537689, now seen corresponding path program 1 times [2018-11-07 12:59:30,445 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:59:30,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:59:30,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:59:30,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:59:30,447 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:59:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:59:30,797 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 34 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-07 12:59:30,797 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:59:30,797 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:59:30,798 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 245 with the following transitions: [2018-11-07 12:59:30,799 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [16], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1137], [1145], [1149], [1151], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 12:59:30,823 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:59:30,823 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 13:00:34,710 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 13:00:34,710 INFO L272 AbstractInterpreter]: Visited 216 different actions 426 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 13:00:34,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:00:34,720 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 13:01:10,918 INFO L227 lantSequenceWeakener]: Weakened 120 states. On average, predicates are now at 80.42% of their original sizes. [2018-11-07 13:01:10,919 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 13:01:14,331 INFO L415 sIntCurrentIteration]: We unified 243 AI predicates to 243 [2018-11-07 13:01:14,331 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 13:01:14,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 13:01:14,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [32] imperfect sequences [5] total 35 [2018-11-07 13:01:14,332 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:01:14,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-11-07 13:01:14,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-11-07 13:01:14,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=795, Unknown=0, NotChecked=0, Total=992 [2018-11-07 13:01:14,333 INFO L87 Difference]: Start difference. First operand 2072 states and 3376 transitions. Second operand 32 states. Received shutdown request... [2018-11-07 13:01:50,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 13:01:50,017 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 13:01:50,022 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 13:01:50,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:01:50 BoogieIcfgContainer [2018-11-07 13:01:50,022 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 13:01:50,023 INFO L168 Benchmark]: Toolchain (without parser) took 250843.27 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 45.0 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-11-07 13:01:50,025 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 13:01:50,025 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1221.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-07 13:01:50,026 INFO L168 Benchmark]: Boogie Procedure Inliner took 200.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -875.0 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. [2018-11-07 13:01:50,027 INFO L168 Benchmark]: Boogie Preprocessor took 156.04 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 13:01:50,028 INFO L168 Benchmark]: RCFGBuilder took 5783.00 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 271.0 MB). Peak memory consumption was 271.0 MB. Max. memory is 7.1 GB. [2018-11-07 13:01:50,028 INFO L168 Benchmark]: TraceAbstraction took 243476.98 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 1.4 GB in the end (delta: 575.0 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-07 13:01:50,034 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1221.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 200.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -875.0 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 156.04 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5783.00 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 271.0 MB). Peak memory consumption was 271.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 243476.98 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 1.4 GB in the end (delta: 575.0 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1647]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1647). Cancelled while BasicCegarLoop was constructing difference of abstraction (2072states) and FLOYD_HOARE automaton (currently 13 states, 32 states before enhancement),while ReachableStatesComputation was computing reachable states (1742 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 243.3s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 102.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 986 SDtfs, 3334 SDslu, 1220 SDs, 0 SdLazy, 5831 SolverSat, 792 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 79.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 503 GetRequests, 400 SyntacticMatches, 31 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1246 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2072occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 82.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9990899739822103 AbsIntWeakeningRatio, 0.2974683544303797 AbsIntAvgWeakeningVarsNumRemoved, 46.67088607594937 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 66 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 1132 NumberOfCodeBlocks, 1132 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1127 ConstructedInterpolants, 0 QuantifiedInterpolants, 505556 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 77/89 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown