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_label07_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:37:37,205 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:37:37,207 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:37:37,219 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:37:37,219 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:37:37,221 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:37:37,222 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:37:37,224 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:37:37,226 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:37:37,227 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:37:37,230 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:37:37,230 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:37:37,231 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:37:37,232 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:37:37,234 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:37:37,235 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:37:37,236 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:37:37,238 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:37:37,240 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:37:37,241 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:37:37,243 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:37:37,244 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:37:37,246 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:37:37,247 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:37:37,247 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:37:37,248 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:37:37,249 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:37:37,250 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:37:37,251 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:37:37,252 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:37:37,252 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:37:37,253 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:37:37,253 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:37:37,254 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:37:37,258 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:37:37,259 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:37:37,259 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 [2018-11-12 19:37:37,289 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:37:37,289 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:37:37,291 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:37:37,291 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:37:37,291 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:37:37,291 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:37:37,294 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:37:37,294 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:37:37,295 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:37:37,295 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:37:37,295 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:37:37,295 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:37:37,296 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:37:37,297 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:37:37,297 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:37:37,297 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:37:37,297 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:37:37,297 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:37:37,298 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:37:37,298 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:37:37,298 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:37:37,298 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:37:37,299 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:37:37,299 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:37:37,299 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:37:37,299 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:37:37,299 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:37:37,300 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:37:37,300 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:37:37,300 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:37:37,300 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:37:37,301 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:37:37,301 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:37:37,301 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:37:37,301 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:37:37,358 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:37:37,373 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:37:37,378 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:37:37,380 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:37:37,381 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:37:37,382 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label07_true-unreach-call.c [2018-11-12 19:37:37,451 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e9c0b5f8/50d5e78b948d47c8bb059eaf18ba66a0/FLAG7057dfb81 [2018-11-12 19:37:38,230 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:37:38,231 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label07_true-unreach-call.c [2018-11-12 19:37:38,259 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e9c0b5f8/50d5e78b948d47c8bb059eaf18ba66a0/FLAG7057dfb81 [2018-11-12 19:37:38,275 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e9c0b5f8/50d5e78b948d47c8bb059eaf18ba66a0 [2018-11-12 19:37:38,286 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:37:38,288 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:37:38,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:37:38,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:37:38,294 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:37:38,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:37:38" (1/1) ... [2018-11-12 19:37:38,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c5c9c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:38, skipping insertion in model container [2018-11-12 19:37:38,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:37:38" (1/1) ... [2018-11-12 19:37:38,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:37:38,465 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:37:39,557 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:37:39,562 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:37:40,080 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:37:40,113 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:37:40,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:40 WrapperNode [2018-11-12 19:37:40,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:37:40,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:37:40,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:37:40,115 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:37:40,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:40" (1/1) ... [2018-11-12 19:37:40,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:40" (1/1) ... [2018-11-12 19:37:40,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:37:40,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:37:40,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:37:40,394 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:37:40,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:40" (1/1) ... [2018-11-12 19:37:40,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:40" (1/1) ... [2018-11-12 19:37:40,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:40" (1/1) ... [2018-11-12 19:37:40,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:40" (1/1) ... [2018-11-12 19:37:40,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:40" (1/1) ... [2018-11-12 19:37:40,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:40" (1/1) ... [2018-11-12 19:37:40,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:40" (1/1) ... [2018-11-12 19:37:40,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:37:40,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:37:40,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:37:40,621 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:37:40,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:37:40,695 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:37:40,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:37:40,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:37:40,696 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 19:37:40,696 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 19:37:40,696 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:37:40,697 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:37:40,697 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:37:40,697 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:37:40,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:37:40,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:37:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:37:40,698 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:37:48,289 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:37:48,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:37:48 BoogieIcfgContainer [2018-11-12 19:37:48,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:37:48,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:37:48,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:37:48,294 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:37:48,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:37:38" (1/3) ... [2018-11-12 19:37:48,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65aef40e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:37:48, skipping insertion in model container [2018-11-12 19:37:48,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:37:40" (2/3) ... [2018-11-12 19:37:48,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65aef40e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:37:48, skipping insertion in model container [2018-11-12 19:37:48,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:37:48" (3/3) ... [2018-11-12 19:37:48,298 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label07_true-unreach-call.c [2018-11-12 19:37:48,308 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:37:48,318 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:37:48,336 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:37:48,381 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:37:48,382 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:37:48,382 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:37:48,382 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:37:48,382 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:37:48,383 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:37:48,383 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:37:48,383 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:37:48,433 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-12 19:37:48,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-12 19:37:48,445 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:37:48,446 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] [2018-11-12 19:37:48,449 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:37:48,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:37:48,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1715798052, now seen corresponding path program 1 times [2018-11-12 19:37:48,461 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:37:48,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:37:48,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:37:48,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:37:48,514 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:37:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:37:48,980 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:37:49,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:37:49,104 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:37:49,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 19:37:49,105 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:37:49,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:37:49,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:37:49,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:37:49,132 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-12 19:37:55,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:37:55,374 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-12 19:37:55,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:37:55,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2018-11-12 19:37:55,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:37:55,413 INFO L225 Difference]: With dead ends: 2251 [2018-11-12 19:37:55,414 INFO L226 Difference]: Without dead ends: 1474 [2018-11-12 19:37:55,432 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:37:55,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-12 19:37:55,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-12 19:37:55,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-12 19:37:55,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2715 transitions. [2018-11-12 19:37:55,596 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2715 transitions. Word has length 54 [2018-11-12 19:37:55,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:37:55,597 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2715 transitions. [2018-11-12 19:37:55,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:37:55,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2715 transitions. [2018-11-12 19:37:55,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-12 19:37:55,612 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:37:55,613 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:37:55,613 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:37:55,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:37:55,614 INFO L82 PathProgramCache]: Analyzing trace with hash -487278161, now seen corresponding path program 1 times [2018-11-12 19:37:55,615 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:37:55,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:37:55,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:37:55,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:37:55,617 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:37:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:37:55,954 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:37:56,200 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:37:56,200 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:37:56,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 19:37:56,201 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:37:56,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 19:37:56,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 19:37:56,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 19:37:56,205 INFO L87 Difference]: Start difference. First operand 1474 states and 2715 transitions. Second operand 5 states. [2018-11-12 19:38:04,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:38:04,467 INFO L93 Difference]: Finished difference Result 4419 states and 8226 transitions. [2018-11-12 19:38:04,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:38:04,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2018-11-12 19:38:04,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:38:04,487 INFO L225 Difference]: With dead ends: 4419 [2018-11-12 19:38:04,487 INFO L226 Difference]: Without dead ends: 2951 [2018-11-12 19:38:04,491 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:38:04,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-11-12 19:38:04,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-11-12 19:38:04,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-11-12 19:38:04,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4901 transitions. [2018-11-12 19:38:04,571 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4901 transitions. Word has length 125 [2018-11-12 19:38:04,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:38:04,572 INFO L480 AbstractCegarLoop]: Abstraction has 2925 states and 4901 transitions. [2018-11-12 19:38:04,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 19:38:04,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4901 transitions. [2018-11-12 19:38:04,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-12 19:38:04,577 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:38:04,577 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:38:04,577 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:38:04,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:04,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1895018150, now seen corresponding path program 1 times [2018-11-12 19:38:04,578 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:38:04,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:04,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:38:04,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:04,579 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:38:04,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:38:04,803 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:38:04,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:38:04,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:38:04,804 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:38:04,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:38:04,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:38:04,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:38:04,805 INFO L87 Difference]: Start difference. First operand 2925 states and 4901 transitions. Second operand 6 states. [2018-11-12 19:38:15,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:38:15,384 INFO L93 Difference]: Finished difference Result 11199 states and 19620 transitions. [2018-11-12 19:38:15,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 19:38:15,384 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-11-12 19:38:15,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:38:15,448 INFO L225 Difference]: With dead ends: 11199 [2018-11-12 19:38:15,448 INFO L226 Difference]: Without dead ends: 8280 [2018-11-12 19:38:15,476 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 19:38:15,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2018-11-12 19:38:15,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8210. [2018-11-12 19:38:15,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8210 states. [2018-11-12 19:38:15,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8210 states to 8210 states and 12152 transitions. [2018-11-12 19:38:15,788 INFO L78 Accepts]: Start accepts. Automaton has 8210 states and 12152 transitions. Word has length 130 [2018-11-12 19:38:15,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:38:15,789 INFO L480 AbstractCegarLoop]: Abstraction has 8210 states and 12152 transitions. [2018-11-12 19:38:15,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:38:15,789 INFO L276 IsEmpty]: Start isEmpty. Operand 8210 states and 12152 transitions. [2018-11-12 19:38:15,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-11-12 19:38:15,795 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:38:15,795 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:38:15,797 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:38:15,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:15,797 INFO L82 PathProgramCache]: Analyzing trace with hash 818558682, now seen corresponding path program 1 times [2018-11-12 19:38:15,797 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:38:15,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:15,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:38:15,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:15,799 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:38:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:38:16,098 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:38:16,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:38:16,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:38:16,099 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:38:16,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:38:16,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:38:16,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:38:16,101 INFO L87 Difference]: Start difference. First operand 8210 states and 12152 transitions. Second operand 4 states. [2018-11-12 19:38:23,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:38:23,477 INFO L93 Difference]: Finished difference Result 30818 states and 49207 transitions. [2018-11-12 19:38:23,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:38:23,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2018-11-12 19:38:23,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:38:23,642 INFO L225 Difference]: With dead ends: 30818 [2018-11-12 19:38:23,642 INFO L226 Difference]: Without dead ends: 22614 [2018-11-12 19:38:23,715 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 [2018-11-12 19:38:23,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22614 states. [2018-11-12 19:38:24,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22614 to 22614. [2018-11-12 19:38:24,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22614 states. [2018-11-12 19:38:24,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22614 states to 22614 states and 33754 transitions. [2018-11-12 19:38:24,657 INFO L78 Accepts]: Start accepts. Automaton has 22614 states and 33754 transitions. Word has length 152 [2018-11-12 19:38:24,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:38:24,657 INFO L480 AbstractCegarLoop]: Abstraction has 22614 states and 33754 transitions. [2018-11-12 19:38:24,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:38:24,658 INFO L276 IsEmpty]: Start isEmpty. Operand 22614 states and 33754 transitions. [2018-11-12 19:38:24,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-11-12 19:38:24,671 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:38:24,671 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, 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] [2018-11-12 19:38:24,671 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:38:24,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:24,672 INFO L82 PathProgramCache]: Analyzing trace with hash -2056591124, now seen corresponding path program 1 times [2018-11-12 19:38:24,673 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:38:24,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:24,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:38:24,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:38:24,674 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:38:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:38:24,939 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:38:25,183 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 94 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:38:25,184 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:38:25,184 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:38:25,185 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-11-12 19:38:25,191 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], [1955], [1957], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [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], [2217], [2220], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-12 19:38:25,255 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:38:25,256 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:38:25,827 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:38:25,829 INFO L272 AbstractInterpreter]: Visited 101 different actions 101 times. Never merged. Never widened. Performed 848 root evaluator evaluations with a maximum evaluation depth of 6. Performed 848 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:38:25,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:38:25,875 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:38:26,548 INFO L227 lantSequenceWeakener]: Weakened 211 states. On average, predicates are now at 78.03% of their original sizes. [2018-11-12 19:38:26,548 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:38:26,909 INFO L415 sIntCurrentIteration]: We unified 219 AI predicates to 219 [2018-11-12 19:38:26,909 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:38:26,910 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:38:26,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-12 19:38:26,910 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:38:26,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 19:38:26,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 19:38:26,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 19:38:26,912 INFO L87 Difference]: Start difference. First operand 22614 states and 33754 transitions. Second operand 7 states. [2018-11-12 19:38:36,660 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:39:07,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:39:07,433 INFO L93 Difference]: Finished difference Result 45927 states and 68354 transitions. [2018-11-12 19:39:07,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:39:07,433 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2018-11-12 19:39:07,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:39:07,534 INFO L225 Difference]: With dead ends: 45927 [2018-11-12 19:39:07,535 INFO L226 Difference]: Without dead ends: 23319 [2018-11-12 19:39:07,595 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 220 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:39:07,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23319 states. [2018-11-12 19:39:08,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23319 to 23317. [2018-11-12 19:39:08,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23317 states. [2018-11-12 19:39:08,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23317 states to 23317 states and 34469 transitions. [2018-11-12 19:39:08,169 INFO L78 Accepts]: Start accepts. Automaton has 23317 states and 34469 transitions. Word has length 220 [2018-11-12 19:39:08,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:39:08,170 INFO L480 AbstractCegarLoop]: Abstraction has 23317 states and 34469 transitions. [2018-11-12 19:39:08,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 19:39:08,170 INFO L276 IsEmpty]: Start isEmpty. Operand 23317 states and 34469 transitions. [2018-11-12 19:39:08,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2018-11-12 19:39:08,185 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:39:08,186 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:39:08,186 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:39:08,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:39:08,187 INFO L82 PathProgramCache]: Analyzing trace with hash -718620913, now seen corresponding path program 1 times [2018-11-12 19:39:08,187 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:39:08,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:39:08,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:39:08,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:39:08,188 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:39:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:39:08,679 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:39:08,861 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:39:10,147 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 200 proven. 172 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:39:10,147 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:39:10,147 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:39:10,147 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 408 with the following transitions: [2018-11-12 19:39:10,148 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], [1955], [1957], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [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], [2217], [2220], [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], [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] [2018-11-12 19:39:10,155 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:39:10,155 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:39:11,074 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:39:11,074 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Performed 5933 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5933 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:39:11,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:39:11,111 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:39:12,418 INFO L227 lantSequenceWeakener]: Weakened 64 states. On average, predicates are now at 77.98% of their original sizes. [2018-11-12 19:39:12,418 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:39:14,559 INFO L415 sIntCurrentIteration]: We unified 406 AI predicates to 406 [2018-11-12 19:39:14,561 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:39:14,561 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:39:14,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [11] total 26 [2018-11-12 19:39:14,562 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:39:14,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 19:39:14,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 19:39:14,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-11-12 19:39:14,565 INFO L87 Difference]: Start difference. First operand 23317 states and 34469 transitions. Second operand 17 states. [2018-11-12 19:39:40,961 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:40:04,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:40:04,167 INFO L93 Difference]: Finished difference Result 48156 states and 70646 transitions. [2018-11-12 19:40:04,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-12 19:40:04,167 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 407 [2018-11-12 19:40:04,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:40:04,289 INFO L225 Difference]: With dead ends: 48156 [2018-11-12 19:40:04,290 INFO L226 Difference]: Without dead ends: 23608 [2018-11-12 19:40:04,380 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 416 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2018-11-12 19:40:04,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23608 states. [2018-11-12 19:40:05,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23608 to 23317. [2018-11-12 19:40:05,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23317 states. [2018-11-12 19:40:05,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23317 states to 23317 states and 34461 transitions. [2018-11-12 19:40:05,142 INFO L78 Accepts]: Start accepts. Automaton has 23317 states and 34461 transitions. Word has length 407 [2018-11-12 19:40:05,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:40:05,143 INFO L480 AbstractCegarLoop]: Abstraction has 23317 states and 34461 transitions. [2018-11-12 19:40:05,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 19:40:05,143 INFO L276 IsEmpty]: Start isEmpty. Operand 23317 states and 34461 transitions. [2018-11-12 19:40:05,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2018-11-12 19:40:05,173 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:40:05,174 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:40:05,174 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:40:05,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:40:05,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1856988692, now seen corresponding path program 1 times [2018-11-12 19:40:05,175 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:40:05,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:40:05,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:40:05,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:40:05,176 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:40:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:40:06,550 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:40:07,331 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 147 proven. 158 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-12 19:40:07,332 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:40:07,332 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:40:07,332 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 749 with the following transitions: [2018-11-12 19:40:07,333 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], [1955], [1957], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [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], [2217], [2220], [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], [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] [2018-11-12 19:40:07,346 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:40:07,347 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:40:08,914 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:40:08,915 INFO L272 AbstractInterpreter]: Visited 537 different actions 1068 times. Merged at 5 different actions 5 times. Never widened. Performed 14947 root evaluator evaluations with a maximum evaluation depth of 6. Performed 14947 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:40:08,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:40:08,953 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:40:16,703 INFO L227 lantSequenceWeakener]: Weakened 439 states. On average, predicates are now at 77.79% of their original sizes. [2018-11-12 19:40:16,703 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:40:19,280 INFO L415 sIntCurrentIteration]: We unified 747 AI predicates to 747 [2018-11-12 19:40:19,280 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:40:19,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:40:19,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [30] imperfect sequences [5] total 33 [2018-11-12 19:40:19,281 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:40:19,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-12 19:40:19,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-12 19:40:19,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2018-11-12 19:40:19,283 INFO L87 Difference]: Start difference. First operand 23317 states and 34461 transitions. Second operand 30 states. [2018-11-12 19:41:07,095 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-12 19:41:07,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-12 19:41:07,994 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:41:08,000 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:41:08,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:41:08 BoogieIcfgContainer [2018-11-12 19:41:08,000 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:41:08,001 INFO L168 Benchmark]: Toolchain (without parser) took 209714.11 ms. Allocated memory was 1.5 GB in the beginning and 5.4 GB in the end (delta: 3.9 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -917.3 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-11-12 19:41:08,002 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:41:08,003 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1824.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-12 19:41:08,003 INFO L168 Benchmark]: Boogie Procedure Inliner took 278.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.9 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -991.0 MB). Peak memory consumption was 42.1 MB. Max. memory is 7.1 GB. [2018-11-12 19:41:08,005 INFO L168 Benchmark]: Boogie Preprocessor took 226.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-11-12 19:41:08,005 INFO L168 Benchmark]: RCFGBuilder took 7669.53 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 501.8 MB). Peak memory consumption was 501.8 MB. Max. memory is 7.1 GB. [2018-11-12 19:41:08,006 INFO L168 Benchmark]: TraceAbstraction took 199709.46 ms. Allocated memory was 2.3 GB in the beginning and 5.4 GB in the end (delta: 3.1 GB). Free memory was 1.8 GB in the beginning and 2.3 GB in the end (delta: -578.9 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-12 19:41:08,012 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1824.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 278.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.9 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -991.0 MB). Peak memory consumption was 42.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 226.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7669.53 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 501.8 MB). Peak memory consumption was 501.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 199709.46 ms. Allocated memory was 2.3 GB in the beginning and 5.4 GB in the end (delta: 3.1 GB). Free memory was 1.8 GB in the beginning and 2.3 GB in the end (delta: -578.9 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 150]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 150). Cancelled while BasicCegarLoop was constructing difference of abstraction (23317states) and FLOYD_HOARE automaton (currently 31 states, 30 states before enhancement),while ReachableStatesComputation was computing reachable states (5258 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 199.6s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 172.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2258 SDtfs, 19507 SDslu, 1210 SDs, 0 SdLazy, 39652 SolverSat, 5374 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 71.2s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1439 GetRequests, 1254 SyntacticMatches, 83 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23317occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.2s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9978675373513124 AbsIntWeakeningRatio, 0.07142857142857142 AbsIntAvgWeakeningVarsNumRemoved, 12.39868804664723 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 6 MinimizatonAttempts, 389 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 1836 NumberOfCodeBlocks, 1836 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1829 ConstructedInterpolants, 0 QuantifiedInterpolants, 2900306 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 664/1059 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown