java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:20:12,292 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:20:12,294 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:20:12,308 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:20:12,309 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:20:12,310 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:20:12,312 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:20:12,314 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:20:12,316 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:20:12,317 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:20:12,318 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:20:12,318 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:20:12,319 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:20:12,320 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:20:12,321 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:20:12,322 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:20:12,323 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:20:12,325 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:20:12,327 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:20:12,329 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:20:12,330 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:20:12,331 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:20:12,334 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:20:12,334 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:20:12,335 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:20:12,336 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:20:12,337 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:20:12,338 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:20:12,338 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:20:12,340 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:20:12,340 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:20:12,341 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:20:12,341 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:20:12,341 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:20:12,342 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:20:12,343 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:20:12,343 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:20:12,375 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:20:12,376 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:20:12,377 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:20:12,380 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:20:12,380 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:20:12,380 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:20:12,381 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:20:12,381 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:20:12,381 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:20:12,381 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:20:12,381 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:20:12,382 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:20:12,384 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:20:12,384 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:20:12,384 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:20:12,384 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:20:12,385 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:20:12,385 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:20:12,385 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:20:12,385 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:20:12,386 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:20:12,387 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:20:12,387 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:20:12,387 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:20:12,388 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:20:12,388 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:20:12,388 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:20:12,388 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:20:12,388 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:20:12,389 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:20:12,389 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:20:12,389 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:20:12,389 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:20:12,389 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:20:12,463 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:20:12,482 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:20:12,488 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:20:12,490 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:20:12,490 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:20:12,491 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label16_true-unreach-call.c [2018-10-24 21:20:12,559 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c7b35a2d7/6b0e3345f2bb4c669d2f6cf57b09ecd4/FLAG4994935ec [2018-10-24 21:20:13,365 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:20:13,366 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label16_true-unreach-call.c [2018-10-24 21:20:13,408 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c7b35a2d7/6b0e3345f2bb4c669d2f6cf57b09ecd4/FLAG4994935ec [2018-10-24 21:20:13,425 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c7b35a2d7/6b0e3345f2bb4c669d2f6cf57b09ecd4 [2018-10-24 21:20:13,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:20:13,439 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:20:13,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:20:13,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:20:13,445 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:20:13,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:20:13" (1/1) ... [2018-10-24 21:20:13,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b704e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:13, skipping insertion in model container [2018-10-24 21:20:13,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:20:13" (1/1) ... [2018-10-24 21:20:13,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:20:13,636 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:20:15,030 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:20:15,036 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:20:15,667 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:20:15,707 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:20:15,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:15 WrapperNode [2018-10-24 21:20:15,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:20:15,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:20:15,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:20:15,710 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:20:15,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:15" (1/1) ... [2018-10-24 21:20:15,785 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:15" (1/1) ... [2018-10-24 21:20:16,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:20:16,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:20:16,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:20:16,249 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:20:16,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:15" (1/1) ... [2018-10-24 21:20:16,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:15" (1/1) ... [2018-10-24 21:20:16,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:15" (1/1) ... [2018-10-24 21:20:16,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:15" (1/1) ... [2018-10-24 21:20:16,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:15" (1/1) ... [2018-10-24 21:20:16,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:15" (1/1) ... [2018-10-24 21:20:16,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:15" (1/1) ... [2018-10-24 21:20:16,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:20:16,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:20:16,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:20:16,557 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:20:16,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 21:20:16,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:20:16,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:20:16,635 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:20:16,635 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:20:16,635 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:20:16,636 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:20:16,636 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:20:16,636 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:20:16,636 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:20:16,636 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:20:16,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:20:16,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:20:16,638 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:20:16,638 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:20:27,148 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:20:27,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:20:27 BoogieIcfgContainer [2018-10-24 21:20:27,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:20:27,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:20:27,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:20:27,154 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:20:27,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:20:13" (1/3) ... [2018-10-24 21:20:27,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8a99c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:20:27, skipping insertion in model container [2018-10-24 21:20:27,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:15" (2/3) ... [2018-10-24 21:20:27,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8a99c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:20:27, skipping insertion in model container [2018-10-24 21:20:27,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:20:27" (3/3) ... [2018-10-24 21:20:27,158 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label16_true-unreach-call.c [2018-10-24 21:20:27,168 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:20:27,178 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:20:27,195 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:20:27,241 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:20:27,241 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:20:27,241 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:20:27,241 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:20:27,241 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:20:27,242 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:20:27,242 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:20:27,242 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:20:27,280 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-24 21:20:27,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-24 21:20:27,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:20:27,293 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] [2018-10-24 21:20:27,296 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:20:27,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:20:27,303 INFO L82 PathProgramCache]: Analyzing trace with hash -710124980, now seen corresponding path program 1 times [2018-10-24 21:20:27,306 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:20:27,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:20:27,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:20:27,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:20:27,366 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:20:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:20:27,829 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:20:27,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:20:27,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:20:27,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:20:27,921 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:20:27,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:20:27,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:20:27,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:20:27,947 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-24 21:20:36,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:20:36,046 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-24 21:20:36,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:20:36,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2018-10-24 21:20:36,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:20:36,084 INFO L225 Difference]: With dead ends: 2446 [2018-10-24 21:20:36,085 INFO L226 Difference]: Without dead ends: 1604 [2018-10-24 21:20:36,098 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:20:36,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-24 21:20:36,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-24 21:20:36,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-24 21:20:36,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-10-24 21:20:36,286 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 72 [2018-10-24 21:20:36,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:20:36,288 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-10-24 21:20:36,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:20:36,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-10-24 21:20:36,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-24 21:20:36,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:20:36,301 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:20:36,301 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:20:36,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:20:36,302 INFO L82 PathProgramCache]: Analyzing trace with hash -377303342, now seen corresponding path program 1 times [2018-10-24 21:20:36,302 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:20:36,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:20:36,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:20:36,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:20:36,305 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:20:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:20:36,628 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:20:36,629 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:20:36,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:20:36,629 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:20:36,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:20:36,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:20:36,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:20:36,634 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 5 states. [2018-10-24 21:20:47,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:20:47,157 INFO L93 Difference]: Finished difference Result 4038 states and 7427 transitions. [2018-10-24 21:20:47,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:20:47,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-10-24 21:20:47,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:20:47,177 INFO L225 Difference]: With dead ends: 4038 [2018-10-24 21:20:47,178 INFO L226 Difference]: Without dead ends: 2440 [2018-10-24 21:20:47,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:20:47,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2018-10-24 21:20:47,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2413. [2018-10-24 21:20:47,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2413 states. [2018-10-24 21:20:47,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 4141 transitions. [2018-10-24 21:20:47,253 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 4141 transitions. Word has length 146 [2018-10-24 21:20:47,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:20:47,253 INFO L481 AbstractCegarLoop]: Abstraction has 2413 states and 4141 transitions. [2018-10-24 21:20:47,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:20:47,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 4141 transitions. [2018-10-24 21:20:47,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-24 21:20:47,259 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:20:47,259 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:20:47,259 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:20:47,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:20:47,260 INFO L82 PathProgramCache]: Analyzing trace with hash 719530862, now seen corresponding path program 1 times [2018-10-24 21:20:47,260 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:20:47,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:20:47,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:20:47,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:20:47,261 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:20:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:20:47,442 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:20:47,442 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:20:47,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:20:47,443 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:20:47,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:20:47,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:20:47,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:20:47,444 INFO L87 Difference]: Start difference. First operand 2413 states and 4141 transitions. Second operand 4 states. [2018-10-24 21:20:56,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:20:56,871 INFO L93 Difference]: Finished difference Result 9492 states and 16754 transitions. [2018-10-24 21:20:56,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:20:56,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2018-10-24 21:20:56,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:20:56,926 INFO L225 Difference]: With dead ends: 9492 [2018-10-24 21:20:56,926 INFO L226 Difference]: Without dead ends: 7085 [2018-10-24 21:20:56,941 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:20:56,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7085 states. [2018-10-24 21:20:57,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7085 to 7085. [2018-10-24 21:20:57,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7085 states. [2018-10-24 21:20:57,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7085 states to 7085 states and 11749 transitions. [2018-10-24 21:20:57,158 INFO L78 Accepts]: Start accepts. Automaton has 7085 states and 11749 transitions. Word has length 148 [2018-10-24 21:20:57,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:20:57,158 INFO L481 AbstractCegarLoop]: Abstraction has 7085 states and 11749 transitions. [2018-10-24 21:20:57,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:20:57,159 INFO L276 IsEmpty]: Start isEmpty. Operand 7085 states and 11749 transitions. [2018-10-24 21:20:57,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-24 21:20:57,164 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:20:57,164 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, 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] [2018-10-24 21:20:57,164 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:20:57,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:20:57,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1702645438, now seen corresponding path program 1 times [2018-10-24 21:20:57,165 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:20:57,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:20:57,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:20:57,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:20:57,166 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:20:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:20:57,514 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:20:57,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:20:57,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:20:57,515 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:20:57,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:20:57,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:20:57,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:20:57,519 INFO L87 Difference]: Start difference. First operand 7085 states and 11749 transitions. Second operand 6 states. [2018-10-24 21:21:08,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:21:08,452 INFO L93 Difference]: Finished difference Result 15965 states and 26509 transitions. [2018-10-24 21:21:08,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:21:08,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-10-24 21:21:08,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:21:08,494 INFO L225 Difference]: With dead ends: 15965 [2018-10-24 21:21:08,494 INFO L226 Difference]: Without dead ends: 8886 [2018-10-24 21:21:08,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:21:08,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8886 states. [2018-10-24 21:21:08,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8886 to 8848. [2018-10-24 21:21:08,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8848 states. [2018-10-24 21:21:08,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8848 states to 8848 states and 14005 transitions. [2018-10-24 21:21:08,738 INFO L78 Accepts]: Start accepts. Automaton has 8848 states and 14005 transitions. Word has length 154 [2018-10-24 21:21:08,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:21:08,738 INFO L481 AbstractCegarLoop]: Abstraction has 8848 states and 14005 transitions. [2018-10-24 21:21:08,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:21:08,739 INFO L276 IsEmpty]: Start isEmpty. Operand 8848 states and 14005 transitions. [2018-10-24 21:21:08,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-24 21:21:08,743 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:21:08,744 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, 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] [2018-10-24 21:21:08,744 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:21:08,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:21:08,744 INFO L82 PathProgramCache]: Analyzing trace with hash -901803398, now seen corresponding path program 1 times [2018-10-24 21:21:08,745 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:21:08,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:08,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:21:08,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:08,746 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:21:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:21:09,063 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:21:09,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:21:09,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:21:09,064 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:21:09,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:21:09,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:21:09,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:21:09,067 INFO L87 Difference]: Start difference. First operand 8848 states and 14005 transitions. Second operand 5 states. [2018-10-24 21:21:16,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:21:16,646 INFO L93 Difference]: Finished difference Result 26985 states and 44144 transitions. [2018-10-24 21:21:16,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 21:21:16,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2018-10-24 21:21:16,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:21:16,747 INFO L225 Difference]: With dead ends: 26985 [2018-10-24 21:21:16,748 INFO L226 Difference]: Without dead ends: 18143 [2018-10-24 21:21:16,781 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:21:16,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18143 states. [2018-10-24 21:21:17,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18143 to 17975. [2018-10-24 21:21:17,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17975 states. [2018-10-24 21:21:17,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17975 states to 17975 states and 26771 transitions. [2018-10-24 21:21:17,539 INFO L78 Accepts]: Start accepts. Automaton has 17975 states and 26771 transitions. Word has length 158 [2018-10-24 21:21:17,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:21:17,540 INFO L481 AbstractCegarLoop]: Abstraction has 17975 states and 26771 transitions. [2018-10-24 21:21:17,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:21:17,540 INFO L276 IsEmpty]: Start isEmpty. Operand 17975 states and 26771 transitions. [2018-10-24 21:21:17,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-10-24 21:21:17,552 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:21:17,552 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, 3, 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] [2018-10-24 21:21:17,553 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:21:17,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:21:17,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1738437273, now seen corresponding path program 1 times [2018-10-24 21:21:17,554 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:21:17,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:17,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:21:17,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:17,556 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:21:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:21:17,871 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:21:18,069 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 130 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:21:18,069 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:21:18,069 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:21:18,070 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 262 with the following transitions: [2018-10-24 21:21:18,072 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2307], [2315], [2323], [2331], [2339], [2343], [2345], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2424], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2492], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 21:21:18,154 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:21:18,154 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:21:21,368 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:21:21,369 INFO L272 AbstractInterpreter]: Visited 108 different actions 108 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 21:21:21,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:21:21,381 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:21:24,238 INFO L232 lantSequenceWeakener]: Weakened 253 states. On average, predicates are now at 75.92% of their original sizes. [2018-10-24 21:21:24,239 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:21:24,925 INFO L413 sIntCurrentIteration]: We have 260 unified AI predicates [2018-10-24 21:21:24,925 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:21:24,927 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:21:24,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-10-24 21:21:24,928 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:21:24,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 21:21:24,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 21:21:24,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:21:24,929 INFO L87 Difference]: Start difference. First operand 17975 states and 26771 transitions. Second operand 8 states. [2018-10-24 21:21:28,559 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:23:09,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:23:09,328 INFO L93 Difference]: Finished difference Result 36714 states and 54563 transitions. [2018-10-24 21:23:09,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:23:09,328 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 261 [2018-10-24 21:23:09,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:23:09,396 INFO L225 Difference]: With dead ends: 36714 [2018-10-24 21:23:09,397 INFO L226 Difference]: Without dead ends: 18745 [2018-10-24 21:23:09,440 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 262 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:23:09,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18745 states. [2018-10-24 21:23:09,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18745 to 18743. [2018-10-24 21:23:09,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18743 states. [2018-10-24 21:23:09,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18743 states to 18743 states and 27552 transitions. [2018-10-24 21:23:09,842 INFO L78 Accepts]: Start accepts. Automaton has 18743 states and 27552 transitions. Word has length 261 [2018-10-24 21:23:09,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:23:09,843 INFO L481 AbstractCegarLoop]: Abstraction has 18743 states and 27552 transitions. [2018-10-24 21:23:09,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 21:23:09,843 INFO L276 IsEmpty]: Start isEmpty. Operand 18743 states and 27552 transitions. [2018-10-24 21:23:09,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-10-24 21:23:09,860 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:23:09,860 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:23:09,861 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:23:09,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:23:09,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1680591689, now seen corresponding path program 1 times [2018-10-24 21:23:09,862 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:23:09,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:23:09,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:23:09,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:23:09,863 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:23:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:23:10,501 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 274 proven. 85 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-24 21:23:10,502 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:23:10,502 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:23:10,502 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 338 with the following transitions: [2018-10-24 21:23:10,503 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2307], [2315], [2323], [2331], [2339], [2343], [2345], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2424], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2492], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 21:23:10,517 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:23:10,517 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:23:16,930 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:23:16,930 INFO L272 AbstractInterpreter]: Visited 112 different actions 217 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 21:23:16,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:23:16,938 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:23:20,648 INFO L232 lantSequenceWeakener]: Weakened 228 states. On average, predicates are now at 76.17% of their original sizes. [2018-10-24 21:23:20,649 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:23:37,271 INFO L413 sIntCurrentIteration]: We have 336 unified AI predicates [2018-10-24 21:23:37,272 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:23:37,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:23:37,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-10-24 21:23:37,272 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:23:37,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-24 21:23:37,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-24 21:23:37,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2018-10-24 21:23:37,274 INFO L87 Difference]: Start difference. First operand 18743 states and 27552 transitions. Second operand 23 states. Received shutdown request... [2018-10-24 21:24:04,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 21:24:04,330 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:24:04,336 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:24:04,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:24:04 BoogieIcfgContainer [2018-10-24 21:24:04,336 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:24:04,337 INFO L168 Benchmark]: Toolchain (without parser) took 230899.57 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: -35.0 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-24 21:24:04,339 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-24 21:24:04,339 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2268.15 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:24:04,340 INFO L168 Benchmark]: Boogie Procedure Inliner took 538.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.9 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 69.0 MB. Max. memory is 7.1 GB. [2018-10-24 21:24:04,341 INFO L168 Benchmark]: Boogie Preprocessor took 307.95 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: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:24:04,342 INFO L168 Benchmark]: RCFGBuilder took 10592.34 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 187.7 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -209.6 MB). Peak memory consumption was 664.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:24:04,343 INFO L168 Benchmark]: TraceAbstraction took 217185.80 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 1.4 GB in the end (delta: 952.4 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-24 21:24:04,353 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2268.15 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 538.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.9 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 69.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 307.95 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: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10592.34 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 187.7 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -209.6 MB). Peak memory consumption was 664.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217185.80 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 1.4 GB in the end (delta: 952.4 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 207]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 207). Cancelled while BasicCegarLoop was constructing difference of abstraction (18743states) and FLOYD_HOARE automaton (currently 12 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (83 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 217.1s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 178.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1801 SDtfs, 13607 SDslu, 846 SDs, 0 SdLazy, 24221 SolverSat, 5384 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 121.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 639 GetRequests, 578 SyntacticMatches, 7 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 19.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18743occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9960893133711924 AbsIntWeakeningRatio, 0.10067114093959731 AbsIntAvgWeakeningVarsNumRemoved, 786.255033557047 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 6 MinimizatonAttempts, 235 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 1276 NumberOfCodeBlocks, 1276 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1269 ConstructedInterpolants, 0 QuantifiedInterpolants, 635997 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 743/909 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown