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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:58:47,192 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:58:47,194 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:58:47,214 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:58:47,214 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:58:47,216 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:58:47,217 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:58:47,219 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:58:47,221 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:58:47,224 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:58:47,226 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:58:47,227 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:58:47,228 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:58:47,229 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:58:47,230 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:58:47,230 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:58:47,231 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:58:47,233 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:58:47,235 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:58:47,237 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:58:47,238 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:58:47,239 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:58:47,241 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 01:58:47,242 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 01:58:47,242 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 01:58:47,243 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 01:58:47,244 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 01:58:47,245 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 01:58:47,245 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 01:58:47,247 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 01:58:47,247 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 01:58:47,247 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-25 01:58:47,248 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-25 01:58:47,248 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-25 01:58:47,249 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-25 01:58:47,249 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-25 01:58:47,250 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 01:58:47,280 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:58:47,280 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:58:47,281 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:58:47,281 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:58:47,281 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:58:47,282 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:58:47,282 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:58:47,282 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:58:47,282 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:58:47,282 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:58:47,283 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:58:47,283 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:58:47,283 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:58:47,283 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:58:47,287 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:58:47,287 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:58:47,287 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:58:47,287 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:58:47,287 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:58:47,288 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:58:47,288 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:58:47,288 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:58:47,288 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:58:47,288 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:58:47,289 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:58:47,289 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:58:47,289 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:58:47,289 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:58:47,289 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:58:47,290 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:58:47,290 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:58:47,290 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:58:47,290 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:58:47,290 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:58:47,291 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:58:47,291 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:58:47,334 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:58:47,346 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:58:47,350 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:58:47,352 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:58:47,352 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:58:47,353 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label24_true-unreach-call.c [2018-10-25 01:58:47,411 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e833edc22/e2a92954f75b47aeaf6260cdaae2db08/FLAGbe2473e72 [2018-10-25 01:58:48,166 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:58:48,167 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label24_true-unreach-call.c [2018-10-25 01:58:48,189 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e833edc22/e2a92954f75b47aeaf6260cdaae2db08/FLAGbe2473e72 [2018-10-25 01:58:48,208 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e833edc22/e2a92954f75b47aeaf6260cdaae2db08 [2018-10-25 01:58:48,220 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:58:48,223 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:58:48,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:58:48,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:58:48,230 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:58:48,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:58:48" (1/1) ... [2018-10-25 01:58:48,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46764b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:48, skipping insertion in model container [2018-10-25 01:58:48,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:58:48" (1/1) ... [2018-10-25 01:58:48,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:58:48,367 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:58:49,269 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:58:49,275 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:58:49,702 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:58:49,724 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:58:49,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:49 WrapperNode [2018-10-25 01:58:49,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:58:49,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:58:49,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:58:49,726 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:58:49,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:49" (1/1) ... [2018-10-25 01:58:49,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:49" (1/1) ... [2018-10-25 01:58:50,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:58:50,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:58:50,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:58:50,160 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:58:50,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:49" (1/1) ... [2018-10-25 01:58:50,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:49" (1/1) ... [2018-10-25 01:58:50,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:49" (1/1) ... [2018-10-25 01:58:50,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:49" (1/1) ... [2018-10-25 01:58:50,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:49" (1/1) ... [2018-10-25 01:58:50,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:49" (1/1) ... [2018-10-25 01:58:50,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:49" (1/1) ... [2018-10-25 01:58:50,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:58:50,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:58:50,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:58:50,409 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:58:50,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:49" (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 [2018-10-25 01:58:50,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:58:50,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:58:50,484 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 01:58:50,484 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 01:58:50,485 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:58:50,485 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:58:50,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:58:50,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:58:50,485 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:58:50,485 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:59:04,871 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:59:04,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:59:04 BoogieIcfgContainer [2018-10-25 01:59:04,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:59:04,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:59:04,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:59:04,880 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:59:04,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:58:48" (1/3) ... [2018-10-25 01:59:04,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d91924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:59:04, skipping insertion in model container [2018-10-25 01:59:04,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:49" (2/3) ... [2018-10-25 01:59:04,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d91924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:59:04, skipping insertion in model container [2018-10-25 01:59:04,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:59:04" (3/3) ... [2018-10-25 01:59:04,884 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label24_true-unreach-call.c [2018-10-25 01:59:04,893 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:59:04,901 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:59:04,919 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:59:04,968 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:59:04,968 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:59:04,968 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:59:04,968 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:59:04,969 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:59:04,969 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:59:04,969 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:59:04,969 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:59:05,007 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-25 01:59:05,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-25 01:59:05,018 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:59:05,020 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] [2018-10-25 01:59:05,022 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:59:05,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:05,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1873731430, now seen corresponding path program 1 times [2018-10-25 01:59:05,032 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:59:05,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:05,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:05,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:05,087 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:59:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:59:05,619 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:59:05,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:59:05,620 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:59:05,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:59:05,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:59:05,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:59:05,646 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-25 01:59:19,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:59:19,628 INFO L93 Difference]: Finished difference Result 2133 states and 3959 transitions. [2018-10-25 01:59:19,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:59:19,630 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2018-10-25 01:59:19,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:59:19,661 INFO L225 Difference]: With dead ends: 2133 [2018-10-25 01:59:19,662 INFO L226 Difference]: Without dead ends: 1523 [2018-10-25 01:59:19,672 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:59:19,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2018-10-25 01:59:19,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1516. [2018-10-25 01:59:19,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1516 states. [2018-10-25 01:59:19,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2287 transitions. [2018-10-25 01:59:19,827 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2287 transitions. Word has length 67 [2018-10-25 01:59:19,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:59:19,828 INFO L481 AbstractCegarLoop]: Abstraction has 1516 states and 2287 transitions. [2018-10-25 01:59:19,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:59:19,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2287 transitions. [2018-10-25 01:59:19,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-25 01:59:19,837 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:59:19,838 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:59:19,838 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:59:19,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:19,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1143793551, now seen corresponding path program 1 times [2018-10-25 01:59:19,839 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:59:19,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:19,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:19,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:19,841 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:59:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:20,215 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:59:20,215 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:59:20,215 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:59:20,216 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 143 with the following transitions: [2018-10-25 01:59:20,218 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1146], [1148], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:59:20,266 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:59:20,267 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:59:22,233 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:59:22,235 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 01:59:22,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:22,283 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:59:22,283 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:59:22,283 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:59:22,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:22,296 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:59:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:22,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:59:51,367 WARN L179 SmtUtils]: Spent 24.34 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-25 02:00:11,632 WARN L179 SmtUtils]: Spent 16.10 s on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-10-25 02:00:12,324 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 4 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:00:12,325 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:00:16,700 WARN L179 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-10-25 02:00:16,968 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-10-25 02:00:19,742 WARN L179 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-10-25 02:00:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:00:20,174 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 02:00:20,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-25 02:00:20,175 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:00:20,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:00:20,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:00:20,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=160, Unknown=5, NotChecked=0, Total=210 [2018-10-25 02:00:20,182 INFO L87 Difference]: Start difference. First operand 1516 states and 2287 transitions. Second operand 6 states. [2018-10-25 02:01:33,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:01:33,483 INFO L93 Difference]: Finished difference Result 5735 states and 8889 transitions. [2018-10-25 02:01:33,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 02:01:33,486 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2018-10-25 02:01:33,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:01:33,521 INFO L225 Difference]: With dead ends: 5735 [2018-10-25 02:01:33,521 INFO L226 Difference]: Without dead ends: 4225 [2018-10-25 02:01:33,533 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 56.5s TimeCoverageRelationStatistics Valid=45, Invalid=160, Unknown=5, NotChecked=0, Total=210 [2018-10-25 02:01:33,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4225 states. [2018-10-25 02:01:33,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4225 to 4194. [2018-10-25 02:01:33,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4194 states. [2018-10-25 02:01:33,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4194 states to 4194 states and 6144 transitions. [2018-10-25 02:01:33,671 INFO L78 Accepts]: Start accepts. Automaton has 4194 states and 6144 transitions. Word has length 142 [2018-10-25 02:01:33,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:01:33,672 INFO L481 AbstractCegarLoop]: Abstraction has 4194 states and 6144 transitions. [2018-10-25 02:01:33,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:01:33,673 INFO L276 IsEmpty]: Start isEmpty. Operand 4194 states and 6144 transitions. [2018-10-25 02:01:33,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-25 02:01:33,679 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:01:33,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:01:33,680 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:01:33,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:01:33,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2048723862, now seen corresponding path program 1 times [2018-10-25 02:01:33,681 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:01:33,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:01:33,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:01:33,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:01:33,682 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:01:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:01:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:01:33,960 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:01:33,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:01:33,960 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:01:33,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:01:33,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:01:33,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:01:33,961 INFO L87 Difference]: Start difference. First operand 4194 states and 6144 transitions. Second operand 6 states. [2018-10-25 02:01:39,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:01:39,896 INFO L93 Difference]: Finished difference Result 12519 states and 19220 transitions. [2018-10-25 02:01:39,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 02:01:39,898 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2018-10-25 02:01:39,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:01:39,953 INFO L225 Difference]: With dead ends: 12519 [2018-10-25 02:01:39,954 INFO L226 Difference]: Without dead ends: 8331 [2018-10-25 02:01:39,976 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 [2018-10-25 02:01:39,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8331 states. [2018-10-25 02:01:40,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8331 to 8262. [2018-10-25 02:01:40,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8262 states. [2018-10-25 02:01:40,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8262 states to 8262 states and 11671 transitions. [2018-10-25 02:01:40,215 INFO L78 Accepts]: Start accepts. Automaton has 8262 states and 11671 transitions. Word has length 183 [2018-10-25 02:01:40,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:01:40,215 INFO L481 AbstractCegarLoop]: Abstraction has 8262 states and 11671 transitions. [2018-10-25 02:01:40,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:01:40,216 INFO L276 IsEmpty]: Start isEmpty. Operand 8262 states and 11671 transitions. [2018-10-25 02:01:40,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-25 02:01:40,222 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:01:40,222 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:01:40,222 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:01:40,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:01:40,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1461289562, now seen corresponding path program 1 times [2018-10-25 02:01:40,223 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:01:40,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:01:40,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:01:40,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:01:40,224 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:01:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:01:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:01:40,523 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:01:40,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-25 02:01:40,523 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:01:40,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-25 02:01:40,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-25 02:01:40,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-25 02:01:40,524 INFO L87 Difference]: Start difference. First operand 8262 states and 11671 transitions. Second operand 7 states. [2018-10-25 02:02:14,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:02:14,148 INFO L93 Difference]: Finished difference Result 24244 states and 39513 transitions. [2018-10-25 02:02:14,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-25 02:02:14,149 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2018-10-25 02:02:14,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:02:14,302 INFO L225 Difference]: With dead ends: 24244 [2018-10-25 02:02:14,302 INFO L226 Difference]: Without dead ends: 15988 [2018-10-25 02:02:14,377 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-25 02:02:14,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15988 states. [2018-10-25 02:02:14,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15988 to 15748. [2018-10-25 02:02:14,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15748 states. [2018-10-25 02:02:14,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15748 states to 15748 states and 23872 transitions. [2018-10-25 02:02:14,967 INFO L78 Accepts]: Start accepts. Automaton has 15748 states and 23872 transitions. Word has length 201 [2018-10-25 02:02:14,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:02:14,968 INFO L481 AbstractCegarLoop]: Abstraction has 15748 states and 23872 transitions. [2018-10-25 02:02:14,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-25 02:02:14,969 INFO L276 IsEmpty]: Start isEmpty. Operand 15748 states and 23872 transitions. [2018-10-25 02:02:14,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-25 02:02:14,984 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:02:14,984 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, 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] [2018-10-25 02:02:14,985 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:02:14,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:02:14,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1377609661, now seen corresponding path program 1 times [2018-10-25 02:02:14,985 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:02:14,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:14,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:02:14,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:14,987 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:02:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:02:15,330 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:02:15,662 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 121 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-25 02:02:15,662 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:02:15,663 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:02:15,663 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 226 with the following transitions: [2018-10-25 02:02:15,663 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1146], [1148], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1262], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:02:15,669 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:02:15,670 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:02:16,926 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:02:16,926 INFO L272 AbstractInterpreter]: Visited 92 different actions 262 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 02:02:16,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:02:16,967 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:02:16,967 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:02:16,967 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:02:16,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:02:16,981 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:02:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:02:17,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:02:17,180 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:02:17,180 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:02:17,490 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:02:17,512 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 02:02:17,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-25 02:02:17,512 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 02:02:17,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 02:02:17,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 02:02:17,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-25 02:02:17,514 INFO L87 Difference]: Start difference. First operand 15748 states and 23872 transitions. Second operand 9 states. [2018-10-25 02:02:25,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:02:25,459 INFO L93 Difference]: Finished difference Result 36913 states and 57071 transitions. [2018-10-25 02:02:25,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 02:02:25,460 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 225 [2018-10-25 02:02:25,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:02:25,533 INFO L225 Difference]: With dead ends: 36913 [2018-10-25 02:02:25,534 INFO L226 Difference]: Without dead ends: 18470 [2018-10-25 02:02:25,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 448 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-10-25 02:02:25,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18470 states. [2018-10-25 02:02:26,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18470 to 18399. [2018-10-25 02:02:26,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18399 states. [2018-10-25 02:02:26,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18399 states to 18399 states and 23553 transitions. [2018-10-25 02:02:26,288 INFO L78 Accepts]: Start accepts. Automaton has 18399 states and 23553 transitions. Word has length 225 [2018-10-25 02:02:26,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:02:26,288 INFO L481 AbstractCegarLoop]: Abstraction has 18399 states and 23553 transitions. [2018-10-25 02:02:26,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 02:02:26,289 INFO L276 IsEmpty]: Start isEmpty. Operand 18399 states and 23553 transitions. [2018-10-25 02:02:26,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-25 02:02:26,295 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:02:26,295 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, 2, 2, 2, 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] [2018-10-25 02:02:26,295 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:02:26,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:02:26,296 INFO L82 PathProgramCache]: Analyzing trace with hash -881773889, now seen corresponding path program 1 times [2018-10-25 02:02:26,296 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:02:26,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:26,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:02:26,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:26,297 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:02:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:02:26,497 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-10-25 02:02:26,498 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:02:26,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 02:02:26,498 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:02:26,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:02:26,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:02:26,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:02:26,500 INFO L87 Difference]: Start difference. First operand 18399 states and 23553 transitions. Second operand 3 states. [2018-10-25 02:02:30,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:02:30,463 INFO L93 Difference]: Finished difference Result 42591 states and 55988 transitions. [2018-10-25 02:02:30,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:02:30,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2018-10-25 02:02:30,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:02:30,535 INFO L225 Difference]: With dead ends: 42591 [2018-10-25 02:02:30,535 INFO L226 Difference]: Without dead ends: 22377 [2018-10-25 02:02:30,597 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:02:30,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22377 states. [2018-10-25 02:02:30,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22377 to 22377. [2018-10-25 02:02:30,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22377 states. [2018-10-25 02:02:31,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22377 states to 22377 states and 27940 transitions. [2018-10-25 02:02:31,027 INFO L78 Accepts]: Start accepts. Automaton has 22377 states and 27940 transitions. Word has length 242 [2018-10-25 02:02:31,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:02:31,028 INFO L481 AbstractCegarLoop]: Abstraction has 22377 states and 27940 transitions. [2018-10-25 02:02:31,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:02:31,028 INFO L276 IsEmpty]: Start isEmpty. Operand 22377 states and 27940 transitions. [2018-10-25 02:02:31,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-10-25 02:02:31,035 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:02:31,035 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, 2, 2, 2, 2, 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] [2018-10-25 02:02:31,036 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:02:31,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:02:31,036 INFO L82 PathProgramCache]: Analyzing trace with hash 842603431, now seen corresponding path program 1 times [2018-10-25 02:02:31,036 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:02:31,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:31,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:02:31,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:31,037 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:02:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:02:31,448 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 133 proven. 68 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-25 02:02:31,448 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:02:31,449 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:02:31,449 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 272 with the following transitions: [2018-10-25 02:02:31,449 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1146], [1148], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1408], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:02:31,455 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:02:31,455 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:02:31,758 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:02:31,758 INFO L272 AbstractInterpreter]: Visited 125 different actions 245 times. Merged at 7 different actions 7 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-25 02:02:31,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:02:31,795 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:02:31,795 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:02:31,796 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:02:31,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:02:31,812 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:02:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:02:31,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:02:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-25 02:02:32,420 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:02:32,563 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-25 02:02:32,584 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 02:02:32,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-25 02:02:32,584 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:02:32,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:02:32,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:02:32,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-25 02:02:32,585 INFO L87 Difference]: Start difference. First operand 22377 states and 27940 transitions. Second operand 3 states. [2018-10-25 02:02:36,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:02:36,866 INFO L93 Difference]: Finished difference Result 44748 states and 55874 transitions. [2018-10-25 02:02:36,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:02:36,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 271 [2018-10-25 02:02:36,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:02:36,927 INFO L225 Difference]: With dead ends: 44748 [2018-10-25 02:02:36,927 INFO L226 Difference]: Without dead ends: 22377 [2018-10-25 02:02:36,980 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 542 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-25 02:02:36,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22377 states. [2018-10-25 02:02:37,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22377 to 22377. [2018-10-25 02:02:37,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22377 states. [2018-10-25 02:02:37,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22377 states to 22377 states and 27202 transitions. [2018-10-25 02:02:37,379 INFO L78 Accepts]: Start accepts. Automaton has 22377 states and 27202 transitions. Word has length 271 [2018-10-25 02:02:37,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:02:37,380 INFO L481 AbstractCegarLoop]: Abstraction has 22377 states and 27202 transitions. [2018-10-25 02:02:37,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:02:37,381 INFO L276 IsEmpty]: Start isEmpty. Operand 22377 states and 27202 transitions. [2018-10-25 02:02:37,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-25 02:02:37,389 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:02:37,389 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, 2, 2, 2, 2, 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] [2018-10-25 02:02:37,389 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:02:37,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:02:37,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1923289119, now seen corresponding path program 1 times [2018-10-25 02:02:37,390 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:02:37,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:37,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:02:37,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:37,391 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:02:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:02:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-25 02:02:37,751 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:02:37,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 02:02:37,751 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:02:37,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 02:02:37,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 02:02:37,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:02:37,753 INFO L87 Difference]: Start difference. First operand 22377 states and 27202 transitions. Second operand 4 states. [2018-10-25 02:02:45,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:02:45,262 INFO L93 Difference]: Finished difference Result 72941 states and 91154 transitions. [2018-10-25 02:02:45,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 02:02:45,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 293 [2018-10-25 02:02:45,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:02:45,376 INFO L225 Difference]: With dead ends: 72941 [2018-10-25 02:02:45,376 INFO L226 Difference]: Without dead ends: 42510 [2018-10-25 02:02:45,438 INFO L605 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 [2018-10-25 02:02:45,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42510 states. [2018-10-25 02:02:46,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42510 to 41183. [2018-10-25 02:02:46,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41183 states. [2018-10-25 02:02:46,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41183 states to 41183 states and 48674 transitions. [2018-10-25 02:02:46,130 INFO L78 Accepts]: Start accepts. Automaton has 41183 states and 48674 transitions. Word has length 293 [2018-10-25 02:02:46,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:02:46,131 INFO L481 AbstractCegarLoop]: Abstraction has 41183 states and 48674 transitions. [2018-10-25 02:02:46,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 02:02:46,132 INFO L276 IsEmpty]: Start isEmpty. Operand 41183 states and 48674 transitions. [2018-10-25 02:02:46,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-10-25 02:02:46,149 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:02:46,150 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, 2, 2, 2, 2, 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] [2018-10-25 02:02:46,150 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:02:46,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:02:46,150 INFO L82 PathProgramCache]: Analyzing trace with hash -153092305, now seen corresponding path program 1 times [2018-10-25 02:02:46,151 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:02:46,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:46,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:02:46,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:46,152 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:02:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:02:46,504 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-25 02:02:46,504 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:02:46,504 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:02:46,505 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 367 with the following transitions: [2018-10-25 02:02:46,505 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1146], [1148], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1893], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:02:46,512 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:02:46,513 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:02:47,046 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:02:47,046 INFO L272 AbstractInterpreter]: Visited 220 different actions 439 times. Merged at 7 different actions 11 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-25 02:02:47,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:02:47,076 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:02:47,076 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:02:47,076 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:02:47,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:02:47,092 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:02:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:02:47,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:02:47,474 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-10-25 02:02:47,633 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 13 proven. 114 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-25 02:02:47,634 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:02:48,723 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 125 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:02:48,744 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 02:02:48,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 9] total 18 [2018-10-25 02:02:48,744 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 02:02:48,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-25 02:02:48,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-25 02:02:48,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2018-10-25 02:02:48,746 INFO L87 Difference]: Start difference. First operand 41183 states and 48674 transitions. Second operand 11 states. Received shutdown request... [2018-10-25 02:02:57,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-25 02:02:57,711 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 02:02:57,717 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 02:02:57,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 02:02:57 BoogieIcfgContainer [2018-10-25 02:02:57,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 02:02:57,718 INFO L168 Benchmark]: Toolchain (without parser) took 249497.55 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -275.8 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-25 02:02:57,720 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. [2018-10-25 02:02:57,720 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1499.84 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. [2018-10-25 02:02:57,721 INFO L168 Benchmark]: Boogie Procedure Inliner took 433.52 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -926.6 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-10-25 02:02:57,722 INFO L168 Benchmark]: Boogie Preprocessor took 248.46 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: 42.1 MB). Peak memory consumption was 42.1 MB. Max. memory is 7.1 GB. [2018-10-25 02:02:57,723 INFO L168 Benchmark]: RCFGBuilder took 14464.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 450.2 MB). Peak memory consumption was 450.2 MB. Max. memory is 7.1 GB. [2018-10-25 02:02:57,724 INFO L168 Benchmark]: TraceAbstraction took 232841.15 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 1.0 GB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: 21.1 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-25 02:02:57,728 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 1499.84 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 433.52 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -926.6 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 248.46 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: 42.1 MB). Peak memory consumption was 42.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14464.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 450.2 MB). Peak memory consumption was 450.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232841.15 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 1.0 GB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: 21.1 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 188]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 188). Cancelled while BasicCegarLoop was constructing difference of abstraction (41183states) and FLOYD_HOARE automaton (currently 19 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (14624 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 232.7s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 160.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3805 SDtfs, 16260 SDslu, 2444 SDs, 0 SdLazy, 32072 SolverSat, 6621 SolverUnsat, 27 SolverUnknown, 0 SolverNotchecked, 148.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2102 GetRequests, 2006 SyntacticMatches, 12 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 59.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41183occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.2s AbstIntTime, 4 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 1745 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 62.9s InterpolantComputationTime, 2994 NumberOfCodeBlocks, 2994 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 3981 ConstructedInterpolants, 234 QuantifiedInterpolants, 6057559 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1744 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 17 InterpolantComputations, 8 PerfectInterpolantSequences, 2154/2548 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown