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-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label28_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 21:12:27,376 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 21:12:27,378 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 21:12:27,390 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 21:12:27,390 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 21:12:27,391 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 21:12:27,393 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 21:12:27,395 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 21:12:27,396 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 21:12:27,397 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 21:12:27,398 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 21:12:27,399 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 21:12:27,400 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 21:12:27,401 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 21:12:27,402 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 21:12:27,402 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 21:12:27,403 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 21:12:27,405 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 21:12:27,407 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 21:12:27,409 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 21:12:27,411 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 21:12:27,412 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 21:12:27,414 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 21:12:27,416 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 21:12:27,417 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 21:12:27,418 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 21:12:27,419 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 21:12:27,424 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 21:12:27,425 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 21:12:27,426 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 21:12:27,427 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 21:12:27,427 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 21:12:27,429 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 21:12:27,430 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 21:12:27,431 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 21:12:27,432 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 21:12:27,432 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-LIM.epf [2018-11-07 21:12:27,465 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 21:12:27,465 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 21:12:27,467 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 21:12:27,467 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 21:12:27,467 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 21:12:27,468 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 21:12:27,468 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 21:12:27,468 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 21:12:27,468 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 21:12:27,469 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 21:12:27,469 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 21:12:27,469 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 21:12:27,469 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 21:12:27,470 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 21:12:27,470 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 21:12:27,470 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 21:12:27,471 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 21:12:27,472 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 21:12:27,472 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 21:12:27,472 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 21:12:27,472 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 21:12:27,473 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 21:12:27,473 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 21:12:27,473 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 21:12:27,473 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 21:12:27,473 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 21:12:27,474 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 21:12:27,474 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 21:12:27,475 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 21:12:27,475 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 21:12:27,475 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 21:12:27,475 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 21:12:27,475 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 21:12:27,475 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 21:12:27,476 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 21:12:27,550 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 21:12:27,567 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 21:12:27,571 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 21:12:27,573 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 21:12:27,573 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 21:12:27,575 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label28_true-unreach-call.c [2018-11-07 21:12:27,641 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39fb29aad/b66cc88199134d908c68a33d169e5984/FLAGd97daf7fe [2018-11-07 21:12:28,433 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 21:12:28,434 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label28_true-unreach-call.c [2018-11-07 21:12:28,457 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39fb29aad/b66cc88199134d908c68a33d169e5984/FLAGd97daf7fe [2018-11-07 21:12:28,473 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39fb29aad/b66cc88199134d908c68a33d169e5984 [2018-11-07 21:12:28,484 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 21:12:28,486 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 21:12:28,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 21:12:28,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 21:12:28,492 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 21:12:28,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:12:28" (1/1) ... [2018-11-07 21:12:28,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d100604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:28, skipping insertion in model container [2018-11-07 21:12:28,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:12:28" (1/1) ... [2018-11-07 21:12:28,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 21:12:28,626 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 21:12:29,690 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:12:29,695 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 21:12:30,113 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:12:30,146 INFO L193 MainTranslator]: Completed translation [2018-11-07 21:12:30,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:30 WrapperNode [2018-11-07 21:12:30,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 21:12:30,148 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 21:12:30,148 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 21:12:30,148 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 21:12:30,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:30" (1/1) ... [2018-11-07 21:12:30,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:30" (1/1) ... [2018-11-07 21:12:30,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 21:12:30,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 21:12:30,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 21:12:30,483 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 21:12:30,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:30" (1/1) ... [2018-11-07 21:12:30,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:30" (1/1) ... [2018-11-07 21:12:30,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:30" (1/1) ... [2018-11-07 21:12:30,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:30" (1/1) ... [2018-11-07 21:12:30,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:30" (1/1) ... [2018-11-07 21:12:30,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:30" (1/1) ... [2018-11-07 21:12:30,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:30" (1/1) ... [2018-11-07 21:12:30,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 21:12:30,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 21:12:30,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 21:12:30,711 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 21:12:30,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:30" (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 21:12:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 21:12:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 21:12:30,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 21:12:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 21:12:30,777 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 21:12:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 21:12:30,777 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 21:12:30,778 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 21:12:30,778 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 21:12:30,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 21:12:30,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 21:12:30,778 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 21:12:30,779 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 21:12:39,256 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 21:12:39,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:12:39 BoogieIcfgContainer [2018-11-07 21:12:39,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 21:12:39,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 21:12:39,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 21:12:39,262 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 21:12:39,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:12:28" (1/3) ... [2018-11-07 21:12:39,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e082c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:12:39, skipping insertion in model container [2018-11-07 21:12:39,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:12:30" (2/3) ... [2018-11-07 21:12:39,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e082c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:12:39, skipping insertion in model container [2018-11-07 21:12:39,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:12:39" (3/3) ... [2018-11-07 21:12:39,266 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label28_true-unreach-call.c [2018-11-07 21:12:39,276 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 21:12:39,286 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 21:12:39,305 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 21:12:39,352 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 21:12:39,352 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 21:12:39,353 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 21:12:39,353 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 21:12:39,353 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 21:12:39,353 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 21:12:39,353 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 21:12:39,354 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 21:12:39,420 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 21:12:39,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-07 21:12:39,433 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:12:39,435 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] [2018-11-07 21:12:39,437 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:12:39,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:12:39,445 INFO L82 PathProgramCache]: Analyzing trace with hash -2076114681, now seen corresponding path program 1 times [2018-11-07 21:12:39,448 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:12:39,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:39,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:12:39,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:39,502 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:12:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:12:40,023 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 21:12:40,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:12:40,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 21:12:40,027 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:12:40,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 21:12:40,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 21:12:40,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:12:40,052 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-11-07 21:12:50,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:12:50,296 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-11-07 21:12:50,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:12:50,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2018-11-07 21:12:50,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:12:50,333 INFO L225 Difference]: With dead ends: 2974 [2018-11-07 21:12:50,333 INFO L226 Difference]: Without dead ends: 2193 [2018-11-07 21:12:50,346 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 21:12:50,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-11-07 21:12:50,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 1474. [2018-11-07 21:12:50,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 21:12:50,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2384 transitions. [2018-11-07 21:12:50,511 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2384 transitions. Word has length 71 [2018-11-07 21:12:50,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:12:50,512 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2384 transitions. [2018-11-07 21:12:50,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 21:12:50,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2384 transitions. [2018-11-07 21:12:50,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-11-07 21:12:50,521 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:12:50,521 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:12:50,522 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:12:50,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:12:50,522 INFO L82 PathProgramCache]: Analyzing trace with hash 865904024, now seen corresponding path program 1 times [2018-11-07 21:12:50,522 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:12:50,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:50,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:12:50,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:12:50,524 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:12:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:12:50,828 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:12:50,828 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:12:50,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 21:12:50,829 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:12:50,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 21:12:50,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 21:12:50,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 21:12:50,832 INFO L87 Difference]: Start difference. First operand 1474 states and 2384 transitions. Second operand 5 states. [2018-11-07 21:12:59,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:12:59,936 INFO L93 Difference]: Finished difference Result 4422 states and 7235 transitions. [2018-11-07 21:12:59,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:12:59,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2018-11-07 21:12:59,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:12:59,957 INFO L225 Difference]: With dead ends: 4422 [2018-11-07 21:12:59,957 INFO L226 Difference]: Without dead ends: 2954 [2018-11-07 21:12:59,963 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:12:59,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-11-07 21:13:00,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2930. [2018-11-07 21:13:00,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2930 states. [2018-11-07 21:13:00,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 4516 transitions. [2018-11-07 21:13:00,055 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 4516 transitions. Word has length 141 [2018-11-07 21:13:00,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:13:00,056 INFO L480 AbstractCegarLoop]: Abstraction has 2930 states and 4516 transitions. [2018-11-07 21:13:00,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 21:13:00,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 4516 transitions. [2018-11-07 21:13:00,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-07 21:13:00,061 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:13:00,061 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:13:00,062 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:13:00,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:13:00,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1444523296, now seen corresponding path program 1 times [2018-11-07 21:13:00,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:13:00,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:00,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:13:00,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:00,064 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:13:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:13:00,496 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:13:00,497 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:13:00,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:13:00,497 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:13:00,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:13:00,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:13:00,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:13:00,499 INFO L87 Difference]: Start difference. First operand 2930 states and 4516 transitions. Second operand 6 states. [2018-11-07 21:13:05,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:13:05,594 INFO L93 Difference]: Finished difference Result 7357 states and 11327 transitions. [2018-11-07 21:13:05,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:13:05,597 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-11-07 21:13:05,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:13:05,629 INFO L225 Difference]: With dead ends: 7357 [2018-11-07 21:13:05,629 INFO L226 Difference]: Without dead ends: 4433 [2018-11-07 21:13:05,640 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 21:13:05,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2018-11-07 21:13:05,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 4400. [2018-11-07 21:13:05,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4400 states. [2018-11-07 21:13:05,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4400 states to 4400 states and 5842 transitions. [2018-11-07 21:13:05,776 INFO L78 Accepts]: Start accepts. Automaton has 4400 states and 5842 transitions. Word has length 145 [2018-11-07 21:13:05,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:13:05,777 INFO L480 AbstractCegarLoop]: Abstraction has 4400 states and 5842 transitions. [2018-11-07 21:13:05,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:13:05,778 INFO L276 IsEmpty]: Start isEmpty. Operand 4400 states and 5842 transitions. [2018-11-07 21:13:05,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-11-07 21:13:05,782 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:13:05,783 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:13:05,784 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:13:05,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:13:05,784 INFO L82 PathProgramCache]: Analyzing trace with hash -797874491, now seen corresponding path program 1 times [2018-11-07 21:13:05,784 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:13:05,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:05,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:13:05,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:05,786 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:13:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:13:06,069 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:13:06,070 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:13:06,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 21:13:06,070 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:13:06,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 21:13:06,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 21:13:06,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:13:06,074 INFO L87 Difference]: Start difference. First operand 4400 states and 5842 transitions. Second operand 4 states. [2018-11-07 21:13:12,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:13:12,031 INFO L93 Difference]: Finished difference Result 17356 states and 23632 transitions. [2018-11-07 21:13:12,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:13:12,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2018-11-07 21:13:12,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:13:12,102 INFO L225 Difference]: With dead ends: 17356 [2018-11-07 21:13:12,103 INFO L226 Difference]: Without dead ends: 12962 [2018-11-07 21:13:12,129 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 21:13:12,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12962 states. [2018-11-07 21:13:12,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12962 to 12962. [2018-11-07 21:13:12,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12962 states. [2018-11-07 21:13:12,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12962 states to 12962 states and 16372 transitions. [2018-11-07 21:13:12,426 INFO L78 Accepts]: Start accepts. Automaton has 12962 states and 16372 transitions. Word has length 178 [2018-11-07 21:13:12,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:13:12,427 INFO L480 AbstractCegarLoop]: Abstraction has 12962 states and 16372 transitions. [2018-11-07 21:13:12,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 21:13:12,427 INFO L276 IsEmpty]: Start isEmpty. Operand 12962 states and 16372 transitions. [2018-11-07 21:13:12,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-11-07 21:13:12,435 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:13:12,435 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:12,436 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:13:12,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:13:12,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1768524495, now seen corresponding path program 1 times [2018-11-07 21:13:12,436 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:13:12,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:12,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:13:12,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:12,438 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:13:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:13:13,058 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:13:13,058 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:13:13,058 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:13:13,059 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 290 with the following transitions: [2018-11-07 21:13:13,068 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2091], [2093], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:13:13,137 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:13:13,137 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:13:13,924 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:13:13,927 INFO L272 AbstractInterpreter]: Visited 128 different actions 128 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 21:13:13,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:13:13,982 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:13:14,777 INFO L227 lantSequenceWeakener]: Weakened 280 states. On average, predicates are now at 78.12% of their original sizes. [2018-11-07 21:13:14,778 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:13:15,129 INFO L415 sIntCurrentIteration]: We unified 288 AI predicates to 288 [2018-11-07 21:13:15,130 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:13:15,131 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:13:15,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 21:13:15,131 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:13:15,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 21:13:15,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 21:13:15,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 21:13:15,133 INFO L87 Difference]: Start difference. First operand 12962 states and 16372 transitions. Second operand 7 states. [2018-11-07 21:13:23,373 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:13:51,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:13:51,300 INFO L93 Difference]: Finished difference Result 26623 states and 33475 transitions. [2018-11-07 21:13:51,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:13:51,301 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 289 [2018-11-07 21:13:51,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:13:51,349 INFO L225 Difference]: With dead ends: 26623 [2018-11-07 21:13:51,349 INFO L226 Difference]: Without dead ends: 13667 [2018-11-07 21:13:51,385 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 289 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:13:51,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13667 states. [2018-11-07 21:13:51,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13667 to 13665. [2018-11-07 21:13:51,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13665 states. [2018-11-07 21:13:51,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13665 states to 13665 states and 17087 transitions. [2018-11-07 21:13:51,682 INFO L78 Accepts]: Start accepts. Automaton has 13665 states and 17087 transitions. Word has length 289 [2018-11-07 21:13:51,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:13:51,683 INFO L480 AbstractCegarLoop]: Abstraction has 13665 states and 17087 transitions. [2018-11-07 21:13:51,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 21:13:51,683 INFO L276 IsEmpty]: Start isEmpty. Operand 13665 states and 17087 transitions. [2018-11-07 21:13:51,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2018-11-07 21:13:51,700 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:13:51,701 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2018-11-07 21:13:51,701 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:13:51,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:13:51,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1575146157, now seen corresponding path program 1 times [2018-11-07 21:13:51,702 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:13:51,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:51,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:13:51,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:13:51,704 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:13:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:13:52,265 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 21:13:52,450 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 21:13:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 251 proven. 249 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 21:13:53,035 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:13:53,036 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:13:53,036 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 477 with the following transitions: [2018-11-07 21:13:53,037 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2091], [2093], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:13:53,045 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:13:53,045 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:13:53,571 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:13:53,573 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 21:13:53,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:13:53,616 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:13:55,255 INFO L227 lantSequenceWeakener]: Weakened 219 states. On average, predicates are now at 78.21% of their original sizes. [2018-11-07 21:13:55,255 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:13:57,891 INFO L415 sIntCurrentIteration]: We unified 475 AI predicates to 475 [2018-11-07 21:13:57,892 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:13:57,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:13:57,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [11] total 26 [2018-11-07 21:13:57,893 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:13:57,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 21:13:57,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 21:13:57,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-11-07 21:13:57,900 INFO L87 Difference]: Start difference. First operand 13665 states and 17087 transitions. Second operand 17 states. [2018-11-07 21:14:22,286 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:14:39,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:14:39,842 INFO L93 Difference]: Finished difference Result 29813 states and 36890 transitions. [2018-11-07 21:14:39,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-07 21:14:39,842 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 476 [2018-11-07 21:14:39,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:14:39,890 INFO L225 Difference]: With dead ends: 29813 [2018-11-07 21:14:39,891 INFO L226 Difference]: Without dead ends: 16857 [2018-11-07 21:14:39,920 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 484 GetRequests, 396 SyntacticMatches, 64 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2018-11-07 21:14:39,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16857 states. [2018-11-07 21:14:40,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16857 to 15911. [2018-11-07 21:14:40,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15911 states. [2018-11-07 21:14:40,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15911 states to 15911 states and 19375 transitions. [2018-11-07 21:14:40,847 INFO L78 Accepts]: Start accepts. Automaton has 15911 states and 19375 transitions. Word has length 476 [2018-11-07 21:14:40,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:14:40,848 INFO L480 AbstractCegarLoop]: Abstraction has 15911 states and 19375 transitions. [2018-11-07 21:14:40,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 21:14:40,848 INFO L276 IsEmpty]: Start isEmpty. Operand 15911 states and 19375 transitions. [2018-11-07 21:14:40,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2018-11-07 21:14:40,880 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:14:40,881 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:14:40,881 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:14:40,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:14:40,882 INFO L82 PathProgramCache]: Analyzing trace with hash -618210010, now seen corresponding path program 1 times [2018-11-07 21:14:40,882 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:14:40,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:14:40,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:14:40,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:14:40,883 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:14:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:14:42,142 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 383 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-11-07 21:14:42,143 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:14:42,143 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:14:42,144 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 818 with the following transitions: [2018-11-07 21:14:42,144 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2091], [2093], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [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], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:14:42,163 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:14:42,163 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:14:43,736 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:14:43,736 INFO L272 AbstractInterpreter]: Visited 537 different actions 1068 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 21:14:43,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:14:43,778 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:14:45,322 INFO L227 lantSequenceWeakener]: Weakened 508 states. On average, predicates are now at 77.87% of their original sizes. [2018-11-07 21:14:45,322 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:14:47,789 INFO L415 sIntCurrentIteration]: We unified 816 AI predicates to 816 [2018-11-07 21:14:47,789 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:14:47,790 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:14:47,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [30] imperfect sequences [6] total 34 [2018-11-07 21:14:47,790 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:14:47,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-07 21:14:47,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-07 21:14:47,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2018-11-07 21:14:47,796 INFO L87 Difference]: Start difference. First operand 15911 states and 19375 transitions. Second operand 30 states. [2018-11-07 21:15:38,214 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 21:16:03,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-11-07 21:16:03,940 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 21:16:03,946 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 21:16:03,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:16:03 BoogieIcfgContainer [2018-11-07 21:16:03,947 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:16:03,948 INFO L168 Benchmark]: Toolchain (without parser) took 215462.73 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-07 21:16:03,949 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 21:16:03,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1659.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-07 21:16:03,950 INFO L168 Benchmark]: Boogie Procedure Inliner took 334.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -950.6 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. [2018-11-07 21:16:03,951 INFO L168 Benchmark]: Boogie Preprocessor took 227.31 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2018-11-07 21:16:03,952 INFO L168 Benchmark]: RCFGBuilder took 8545.99 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 507.7 MB). Peak memory consumption was 507.7 MB. Max. memory is 7.1 GB. [2018-11-07 21:16:03,953 INFO L168 Benchmark]: TraceAbstraction took 204688.94 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 1.7 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 21:16:03,958 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1659.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 334.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -950.6 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 227.31 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8545.99 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 507.7 MB). Peak memory consumption was 507.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204688.94 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 1.7 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 201]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 201). Cancelled while BasicCegarLoop was constructing difference of abstraction (15911states) and FLOYD_HOARE automaton (currently 41 states, 30 states before enhancement),while ReachableStatesComputation was computing reachable states (18319 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 204.6s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 185.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3237 SDtfs, 23290 SDslu, 2182 SDs, 0 SdLazy, 42198 SolverSat, 5369 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 79.1s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1654 GetRequests, 1398 SyntacticMatches, 146 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1954 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15911occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.1s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9981470938860045 AbsIntWeakeningRatio, 0.06206459784673844 AbsIntAvgWeakeningVarsNumRemoved, 15.776440785307157 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 6 MinimizatonAttempts, 1724 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 2117 NumberOfCodeBlocks, 2117 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 2110 ConstructedInterpolants, 0 QuantifiedInterpolants, 3374613 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 1172/1425 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown