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_label33_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 23:45:37,220 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 23:45:37,223 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 23:45:37,238 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 23:45:37,239 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 23:45:37,240 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 23:45:37,242 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 23:45:37,244 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 23:45:37,246 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 23:45:37,247 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 23:45:37,248 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 23:45:37,248 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 23:45:37,249 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 23:45:37,250 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 23:45:37,251 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 23:45:37,252 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 23:45:37,253 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 23:45:37,256 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 23:45:37,258 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 23:45:37,261 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 23:45:37,264 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 23:45:37,266 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 23:45:37,272 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 23:45:37,273 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 23:45:37,273 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 23:45:37,277 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 23:45:37,278 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 23:45:37,280 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 23:45:37,284 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 23:45:37,285 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 23:45:37,285 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 23:45:37,286 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 23:45:37,289 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 [2018-10-24 23:45:37,312 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 23:45:37,312 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 23:45:37,313 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 23:45:37,313 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 23:45:37,314 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 23:45:37,314 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 23:45:37,314 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 23:45:37,314 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 23:45:37,314 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 23:45:37,315 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 23:45:37,315 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 23:45:37,315 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 23:45:37,315 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 23:45:37,315 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 23:45:37,316 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 23:45:37,316 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 23:45:37,317 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 23:45:37,317 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 23:45:37,317 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 23:45:37,317 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 23:45:37,317 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 23:45:37,318 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 23:45:37,318 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 23:45:37,318 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 23:45:37,318 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 23:45:37,318 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 23:45:37,319 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:45:37,319 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 23:45:37,319 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 23:45:37,319 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 23:45:37,319 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 23:45:37,319 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 23:45:37,320 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 23:45:37,320 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 23:45:37,320 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 23:45:37,320 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 23:45:37,397 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 23:45:37,414 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 23:45:37,419 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 23:45:37,421 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 23:45:37,422 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 23:45:37,423 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label33_false-unreach-call.c [2018-10-24 23:45:37,493 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fe69d72bb/ff777f045556446392e324afe8b6215c/FLAG633ab31e7 [2018-10-24 23:45:38,222 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 23:45:38,223 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label33_false-unreach-call.c [2018-10-24 23:45:38,250 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fe69d72bb/ff777f045556446392e324afe8b6215c/FLAG633ab31e7 [2018-10-24 23:45:38,267 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fe69d72bb/ff777f045556446392e324afe8b6215c [2018-10-24 23:45:38,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 23:45:38,283 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 23:45:38,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 23:45:38,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 23:45:38,290 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 23:45:38,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:45:38" (1/1) ... [2018-10-24 23:45:38,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd54a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:38, skipping insertion in model container [2018-10-24 23:45:38,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:45:38" (1/1) ... [2018-10-24 23:45:38,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 23:45:38,418 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 23:45:39,460 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:45:39,465 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 23:45:39,879 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:45:39,903 INFO L193 MainTranslator]: Completed translation [2018-10-24 23:45:39,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:39 WrapperNode [2018-10-24 23:45:39,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 23:45:39,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 23:45:39,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 23:45:39,906 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 23:45:39,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:39" (1/1) ... [2018-10-24 23:45:39,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:39" (1/1) ... [2018-10-24 23:45:40,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 23:45:40,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 23:45:40,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 23:45:40,385 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 23:45:40,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:39" (1/1) ... [2018-10-24 23:45:40,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:39" (1/1) ... [2018-10-24 23:45:40,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:39" (1/1) ... [2018-10-24 23:45:40,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:39" (1/1) ... [2018-10-24 23:45:40,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:39" (1/1) ... [2018-10-24 23:45:40,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:39" (1/1) ... [2018-10-24 23:45:40,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:39" (1/1) ... [2018-10-24 23:45:40,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 23:45:40,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 23:45:40,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 23:45:40,713 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 23:45:40,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:45:40,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 23:45:40,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 23:45:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 23:45:40,790 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 23:45:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 23:45:40,790 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 23:45:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 23:45:40,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 23:45:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 23:45:40,791 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 23:45:53,182 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 23:45:53,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:45:53 BoogieIcfgContainer [2018-10-24 23:45:53,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 23:45:53,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 23:45:53,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 23:45:53,188 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 23:45:53,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:45:38" (1/3) ... [2018-10-24 23:45:53,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b2eebae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:45:53, skipping insertion in model container [2018-10-24 23:45:53,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:39" (2/3) ... [2018-10-24 23:45:53,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b2eebae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:45:53, skipping insertion in model container [2018-10-24 23:45:53,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:45:53" (3/3) ... [2018-10-24 23:45:53,194 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label33_false-unreach-call.c [2018-10-24 23:45:53,204 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 23:45:53,214 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 23:45:53,232 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 23:45:53,287 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 23:45:53,287 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 23:45:53,288 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 23:45:53,288 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 23:45:53,288 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 23:45:53,288 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 23:45:53,288 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 23:45:53,289 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 23:45:53,327 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 23:45:53,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-24 23:45:53,334 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:45:53,335 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] [2018-10-24 23:45:53,338 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:45:53,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:45:53,344 INFO L82 PathProgramCache]: Analyzing trace with hash 137132598, now seen corresponding path program 1 times [2018-10-24 23:45:53,347 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:45:53,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:45:53,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:45:53,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:45:53,398 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:45:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:45:53,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:45:53,724 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:45:53,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 23:45:53,725 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:45:53,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 23:45:53,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 23:45:53,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:45:53,749 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 23:46:06,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:46:06,816 INFO L93 Difference]: Finished difference Result 2142 states and 3971 transitions. [2018-10-24 23:46:06,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 23:46:06,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-10-24 23:46:06,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:46:06,853 INFO L225 Difference]: With dead ends: 2142 [2018-10-24 23:46:06,853 INFO L226 Difference]: Without dead ends: 1532 [2018-10-24 23:46:06,864 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 [2018-10-24 23:46:06,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2018-10-24 23:46:07,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1519. [2018-10-24 23:46:07,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1519 states. [2018-10-24 23:46:07,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2456 transitions. [2018-10-24 23:46:07,022 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2456 transitions. Word has length 23 [2018-10-24 23:46:07,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:46:07,023 INFO L481 AbstractCegarLoop]: Abstraction has 1519 states and 2456 transitions. [2018-10-24 23:46:07,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 23:46:07,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2456 transitions. [2018-10-24 23:46:07,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-24 23:46:07,029 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:46:07,029 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 23:46:07,029 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:46:07,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:46:07,030 INFO L82 PathProgramCache]: Analyzing trace with hash -2044944537, now seen corresponding path program 1 times [2018-10-24 23:46:07,030 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:46:07,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:46:07,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:46:07,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:46:07,032 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:46:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:46:07,384 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:46:07,385 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:46:07,385 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 23:46:07,385 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:46:07,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 23:46:07,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 23:46:07,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 23:46:07,388 INFO L87 Difference]: Start difference. First operand 1519 states and 2456 transitions. Second operand 5 states. [2018-10-24 23:46:18,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:46:18,769 INFO L93 Difference]: Finished difference Result 4424 states and 7338 transitions. [2018-10-24 23:46:18,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:46:18,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2018-10-24 23:46:18,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:46:18,794 INFO L225 Difference]: With dead ends: 4424 [2018-10-24 23:46:18,795 INFO L226 Difference]: Without dead ends: 2911 [2018-10-24 23:46:18,801 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:46:18,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2018-10-24 23:46:18,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2875. [2018-10-24 23:46:18,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2875 states. [2018-10-24 23:46:18,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 4373 transitions. [2018-10-24 23:46:18,893 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 4373 transitions. Word has length 95 [2018-10-24 23:46:18,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:46:18,893 INFO L481 AbstractCegarLoop]: Abstraction has 2875 states and 4373 transitions. [2018-10-24 23:46:18,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 23:46:18,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 4373 transitions. [2018-10-24 23:46:18,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-24 23:46:18,897 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:46:18,898 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 23:46:18,898 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:46:18,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:46:18,898 INFO L82 PathProgramCache]: Analyzing trace with hash -552688383, now seen corresponding path program 1 times [2018-10-24 23:46:18,899 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:46:18,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:46:18,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:46:18,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:46:18,900 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:46:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:46:19,121 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:46:19,121 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:46:19,121 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:46:19,123 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 99 with the following transitions: [2018-10-24 23:46:19,125 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [794], [796], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 23:46:19,172 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:46:19,173 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:46:20,920 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:46:20,922 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. [2018-10-24 23:46:20,961 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:46:20,963 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:46:20,963 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:46:20,964 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 [2018-10-24 23:46:20,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:46:20,982 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:46:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:46:21,066 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:46:45,853 WARN L179 SmtUtils]: Spent 24.22 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-24 23:47:06,251 WARN L179 SmtUtils]: Spent 16.15 s on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-10-24 23:47:06,469 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:47:06,470 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:47:11,276 WARN L179 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-10-24 23:47:11,339 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-10-24 23:47:14,113 WARN L179 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-10-24 23:47:14,571 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:47:14,604 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 23:47:14,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-24 23:47:14,605 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:47:14,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:47:14,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:47:14,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=161, Unknown=3, NotChecked=0, Total=210 [2018-10-24 23:47:14,606 INFO L87 Difference]: Start difference. First operand 2875 states and 4373 transitions. Second operand 6 states. [2018-10-24 23:48:04,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:48:04,765 INFO L93 Difference]: Finished difference Result 11151 states and 17738 transitions. [2018-10-24 23:48:04,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 23:48:04,766 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2018-10-24 23:48:04,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:48:04,824 INFO L225 Difference]: With dead ends: 11151 [2018-10-24 23:48:04,824 INFO L226 Difference]: Without dead ends: 8282 [2018-10-24 23:48:04,845 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 52.6s TimeCoverageRelationStatistics Valid=46, Invalid=161, Unknown=3, NotChecked=0, Total=210 [2018-10-24 23:48:04,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8282 states. [2018-10-24 23:48:05,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8282 to 8240. [2018-10-24 23:48:05,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8240 states. [2018-10-24 23:48:05,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8240 states to 8240 states and 12731 transitions. [2018-10-24 23:48:05,088 INFO L78 Accepts]: Start accepts. Automaton has 8240 states and 12731 transitions. Word has length 98 [2018-10-24 23:48:05,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:48:05,089 INFO L481 AbstractCegarLoop]: Abstraction has 8240 states and 12731 transitions. [2018-10-24 23:48:05,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:48:05,089 INFO L276 IsEmpty]: Start isEmpty. Operand 8240 states and 12731 transitions. [2018-10-24 23:48:05,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-24 23:48:05,098 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:48:05,098 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 23:48:05,099 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:48:05,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:48:05,099 INFO L82 PathProgramCache]: Analyzing trace with hash -317243459, now seen corresponding path program 1 times [2018-10-24 23:48:05,099 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:48:05,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:48:05,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:48:05,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:48:05,101 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:48:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:48:05,409 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:48:05,463 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:48:05,463 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:48:05,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:48:05,464 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:48:05,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:48:05,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:48:05,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:48:05,465 INFO L87 Difference]: Start difference. First operand 8240 states and 12731 transitions. Second operand 6 states. [2018-10-24 23:48:10,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:48:10,856 INFO L93 Difference]: Finished difference Result 20156 states and 31872 transitions. [2018-10-24 23:48:10,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:48:10,857 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2018-10-24 23:48:10,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:48:10,933 INFO L225 Difference]: With dead ends: 20156 [2018-10-24 23:48:10,933 INFO L226 Difference]: Without dead ends: 11922 [2018-10-24 23:48:10,985 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 23:48:10,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11922 states. [2018-10-24 23:48:11,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11922 to 11821. [2018-10-24 23:48:11,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11821 states. [2018-10-24 23:48:11,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11821 states to 11821 states and 15835 transitions. [2018-10-24 23:48:11,344 INFO L78 Accepts]: Start accepts. Automaton has 11821 states and 15835 transitions. Word has length 173 [2018-10-24 23:48:11,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:48:11,346 INFO L481 AbstractCegarLoop]: Abstraction has 11821 states and 15835 transitions. [2018-10-24 23:48:11,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:48:11,347 INFO L276 IsEmpty]: Start isEmpty. Operand 11821 states and 15835 transitions. [2018-10-24 23:48:11,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-24 23:48:11,351 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:48:11,351 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:48:11,352 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:48:11,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:48:11,352 INFO L82 PathProgramCache]: Analyzing trace with hash -318686824, now seen corresponding path program 1 times [2018-10-24 23:48:11,352 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:48:11,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:48:11,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:48:11,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:48:11,358 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:48:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:48:11,698 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:48:12,195 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 80 proven. 24 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-24 23:48:12,196 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:48:12,196 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:48:12,196 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 191 with the following transitions: [2018-10-24 23:48:12,197 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [794], [796], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 23:48:12,203 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:48:12,203 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:48:12,989 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:48:12,989 INFO L272 AbstractInterpreter]: Visited 97 different actions 293 times. Merged at 7 different actions 25 times. Widened at 1 different actions 1 times. Found 3 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 23:48:13,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:48:13,037 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:48:13,037 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:48:13,037 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 [2018-10-24 23:48:13,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:48:13,053 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:48:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:48:13,147 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:48:13,324 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-24 23:48:13,324 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:48:13,474 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-24 23:48:13,496 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 23:48:13,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-24 23:48:13,496 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:48:13,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:48:13,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:48:13,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:48:13,497 INFO L87 Difference]: Start difference. First operand 11821 states and 15835 transitions. Second operand 3 states. [2018-10-24 23:48:17,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:48:17,201 INFO L93 Difference]: Finished difference Result 24075 states and 32408 transitions. [2018-10-24 23:48:17,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:48:17,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2018-10-24 23:48:17,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:48:17,241 INFO L225 Difference]: With dead ends: 24075 [2018-10-24 23:48:17,241 INFO L226 Difference]: Without dead ends: 12260 [2018-10-24 23:48:17,291 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 380 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:48:17,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12260 states. [2018-10-24 23:48:17,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12260 to 12260. [2018-10-24 23:48:17,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12260 states. [2018-10-24 23:48:17,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12260 states to 12260 states and 15696 transitions. [2018-10-24 23:48:17,520 INFO L78 Accepts]: Start accepts. Automaton has 12260 states and 15696 transitions. Word has length 190 [2018-10-24 23:48:17,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:48:17,520 INFO L481 AbstractCegarLoop]: Abstraction has 12260 states and 15696 transitions. [2018-10-24 23:48:17,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:48:17,521 INFO L276 IsEmpty]: Start isEmpty. Operand 12260 states and 15696 transitions. [2018-10-24 23:48:17,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-10-24 23:48:17,529 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:48:17,530 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:48:17,530 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:48:17,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:48:17,530 INFO L82 PathProgramCache]: Analyzing trace with hash 2077464317, now seen corresponding path program 1 times [2018-10-24 23:48:17,531 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:48:17,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:48:17,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:48:17,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:48:17,532 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:48:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:48:17,939 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-24 23:48:17,940 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:48:17,940 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:48:17,940 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 290 with the following transitions: [2018-10-24 23:48:17,941 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [794], [796], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1333], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 23:48:17,949 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:48:17,949 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:48:18,549 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:48:18,550 INFO L272 AbstractInterpreter]: Visited 109 different actions 334 times. Merged at 8 different actions 30 times. Widened at 1 different actions 2 times. Found 5 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-24 23:48:18,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:48:18,587 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:48:18,587 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:48:18,588 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 [2018-10-24 23:48:18,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:48:18,603 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:48:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:48:18,700 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:48:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-24 23:48:19,034 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:48:19,394 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-24 23:48:19,415 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:48:19,416 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2018-10-24 23:48:19,416 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:48:19,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:48:19,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:48:19,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:48:19,417 INFO L87 Difference]: Start difference. First operand 12260 states and 15696 transitions. Second operand 6 states. [2018-10-24 23:48:34,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:48:34,270 INFO L93 Difference]: Finished difference Result 36440 states and 49645 transitions. [2018-10-24 23:48:34,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 23:48:34,270 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 289 [2018-10-24 23:48:34,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:48:34,382 INFO L225 Difference]: With dead ends: 36440 [2018-10-24 23:48:34,383 INFO L226 Difference]: Without dead ends: 24186 [2018-10-24 23:48:34,432 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 580 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-10-24 23:48:34,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24186 states. [2018-10-24 23:48:34,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24186 to 23277. [2018-10-24 23:48:34,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23277 states. [2018-10-24 23:48:35,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23277 states to 23277 states and 28211 transitions. [2018-10-24 23:48:35,027 INFO L78 Accepts]: Start accepts. Automaton has 23277 states and 28211 transitions. Word has length 289 [2018-10-24 23:48:35,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:48:35,028 INFO L481 AbstractCegarLoop]: Abstraction has 23277 states and 28211 transitions. [2018-10-24 23:48:35,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:48:35,028 INFO L276 IsEmpty]: Start isEmpty. Operand 23277 states and 28211 transitions. [2018-10-24 23:48:35,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-10-24 23:48:35,047 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:48:35,047 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:48:35,048 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:48:35,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:48:35,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1119080016, now seen corresponding path program 1 times [2018-10-24 23:48:35,048 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:48:35,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:48:35,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:48:35,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:48:35,050 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:48:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:48:35,552 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-10-24 23:48:35,997 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-10-24 23:48:36,300 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 7 [2018-10-24 23:48:36,924 WARN L179 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 13 [2018-10-24 23:48:37,694 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-10-24 23:48:37,959 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 16 proven. 207 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-24 23:48:37,960 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:48:37,960 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:48:37,960 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 308 with the following transitions: [2018-10-24 23:48:37,961 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [794], [796], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1333], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 23:48:37,965 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:48:37,965 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:48:39,027 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:48:39,027 INFO L272 AbstractInterpreter]: Visited 120 different actions 346 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 23:48:39,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:48:39,067 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:48:39,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:48:39,067 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 [2018-10-24 23:48:39,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:48:39,080 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:48:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:48:39,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:48:39,902 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 278 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-10-24 23:48:39,902 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:48:40,081 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-10-24 23:48:40,183 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2018-10-24 23:48:40,660 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 126 proven. 98 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-24 23:48:40,681 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:48:40,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2018-10-24 23:48:40,682 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:48:40,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 23:48:40,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 23:48:40,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2018-10-24 23:48:40,684 INFO L87 Difference]: Start difference. First operand 23277 states and 28211 transitions. Second operand 18 states. [2018-10-24 23:48:41,733 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2018-10-24 23:49:12,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:49:12,941 INFO L93 Difference]: Finished difference Result 90877 states and 111422 transitions. [2018-10-24 23:49:12,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-24 23:49:12,942 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 307 [2018-10-24 23:49:12,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:49:13,178 INFO L225 Difference]: With dead ends: 90877 [2018-10-24 23:49:13,178 INFO L226 Difference]: Without dead ends: 61130 [2018-10-24 23:49:13,277 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 640 SyntacticMatches, 7 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2287 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1298, Invalid=5344, Unknown=0, NotChecked=0, Total=6642 [2018-10-24 23:49:13,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61130 states. [2018-10-24 23:49:14,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61130 to 57155. [2018-10-24 23:49:14,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57155 states. [2018-10-24 23:49:14,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57155 states to 57155 states and 67734 transitions. [2018-10-24 23:49:14,434 INFO L78 Accepts]: Start accepts. Automaton has 57155 states and 67734 transitions. Word has length 307 [2018-10-24 23:49:14,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:49:14,434 INFO L481 AbstractCegarLoop]: Abstraction has 57155 states and 67734 transitions. [2018-10-24 23:49:14,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-24 23:49:14,434 INFO L276 IsEmpty]: Start isEmpty. Operand 57155 states and 67734 transitions. [2018-10-24 23:49:14,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-10-24 23:49:14,454 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:49:14,454 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 23:49:14,455 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:49:14,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:49:14,455 INFO L82 PathProgramCache]: Analyzing trace with hash 490104554, now seen corresponding path program 1 times [2018-10-24 23:49:14,455 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:49:14,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:49:14,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:49:14,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:49:14,457 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:49:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:49:14,891 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 23:49:14,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:49:14,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 23:49:14,891 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:49:14,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 23:49:14,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 23:49:14,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:49:14,893 INFO L87 Difference]: Start difference. First operand 57155 states and 67734 transitions. Second operand 4 states. [2018-10-24 23:49:22,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:49:22,552 INFO L93 Difference]: Finished difference Result 134859 states and 163655 transitions. [2018-10-24 23:49:22,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 23:49:22,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 340 [2018-10-24 23:49:22,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:49:22,841 INFO L225 Difference]: With dead ends: 134859 [2018-10-24 23:49:22,842 INFO L226 Difference]: Without dead ends: 77710 [2018-10-24 23:49:22,985 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 [2018-10-24 23:49:23,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77710 states. [2018-10-24 23:49:24,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77710 to 74201. [2018-10-24 23:49:24,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74201 states. [2018-10-24 23:49:24,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74201 states to 74201 states and 86983 transitions. [2018-10-24 23:49:24,379 INFO L78 Accepts]: Start accepts. Automaton has 74201 states and 86983 transitions. Word has length 340 [2018-10-24 23:49:24,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:49:24,379 INFO L481 AbstractCegarLoop]: Abstraction has 74201 states and 86983 transitions. [2018-10-24 23:49:24,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 23:49:24,380 INFO L276 IsEmpty]: Start isEmpty. Operand 74201 states and 86983 transitions. [2018-10-24 23:49:24,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-10-24 23:49:24,399 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:49:24,399 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:49:24,399 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:49:24,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:49:24,400 INFO L82 PathProgramCache]: Analyzing trace with hash 752749883, now seen corresponding path program 1 times [2018-10-24 23:49:24,400 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:49:24,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:49:24,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:49:24,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:49:24,401 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:49:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:49:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 219 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 23:49:24,942 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:49:24,942 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:49:24,942 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 347 with the following transitions: [2018-10-24 23:49:24,942 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [794], [796], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1270], [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], [1600], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 23:49:24,947 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:49:24,948 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:49:25,728 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:49:25,728 INFO L272 AbstractInterpreter]: Visited 160 different actions 486 times. Merged at 8 different actions 29 times. Widened at 1 different actions 1 times. Found 5 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-24 23:49:25,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:49:25,773 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:49:25,773 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:49:25,773 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 23:49:25,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:49:25,789 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:49:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:49:25,902 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:49:26,438 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 219 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 23:49:26,439 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:49:26,608 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 219 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 23:49:26,629 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:49:26,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-10-24 23:49:26,630 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:49:26,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 23:49:26,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 23:49:26,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:49:26,631 INFO L87 Difference]: Start difference. First operand 74201 states and 86983 transitions. Second operand 7 states. Received shutdown request... [2018-10-24 23:49:39,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 23:49:39,969 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 23:49:39,974 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 23:49:39,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:49:39 BoogieIcfgContainer [2018-10-24 23:49:39,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 23:49:39,975 INFO L168 Benchmark]: Toolchain (without parser) took 241693.67 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -856.5 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 23:49:39,976 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 23:49:39,977 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1620.59 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. [2018-10-24 23:49:39,978 INFO L168 Benchmark]: Boogie Procedure Inliner took 478.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -919.9 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 23:49:39,979 INFO L168 Benchmark]: Boogie Preprocessor took 328.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-10-24 23:49:39,979 INFO L168 Benchmark]: RCFGBuilder took 12470.53 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 453.9 MB). Peak memory consumption was 453.9 MB. Max. memory is 7.1 GB. [2018-10-24 23:49:39,980 INFO L168 Benchmark]: TraceAbstraction took 226789.77 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 1.7 GB in the beginning and 2.3 GB in the end (delta: -570.4 MB). Peak memory consumption was 966.8 MB. Max. memory is 7.1 GB. [2018-10-24 23:49:39,984 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1620.59 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 478.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -919.9 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 328.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12470.53 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 453.9 MB). Peak memory consumption was 453.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226789.77 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 1.7 GB in the beginning and 2.3 GB in the end (delta: -570.4 MB). Peak memory consumption was 966.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 56). Cancelled while BasicCegarLoop was constructing difference of abstraction (74201states) and FLOYD_HOARE automaton (currently 10 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (128570 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 226.7s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 153.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3137 SDtfs, 37795 SDslu, 3144 SDs, 0 SdLazy, 38231 SolverSat, 13077 SolverUnsat, 17 SolverUnknown, 0 SolverNotchecked, 134.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2651 GetRequests, 2495 SyntacticMatches, 18 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2358 ImplicationChecksByTransitivity, 59.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74201occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.2s AbstIntTime, 5 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 8585 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 62.0s InterpolantComputationTime, 3091 NumberOfCodeBlocks, 3091 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 4302 ConstructedInterpolants, 97 QuantifiedInterpolants, 4223485 SizeOfPredicates, 9 NumberOfNonLiveVariables, 2280 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 19 InterpolantComputations, 7 PerfectInterpolantSequences, 2853/3224 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown