java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 18:34:21,444 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 18:34:21,447 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 18:34:21,464 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 18:34:21,465 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 18:34:21,466 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 18:34:21,467 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 18:34:21,469 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 18:34:21,473 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 18:34:21,475 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 18:34:21,476 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 18:34:21,476 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 18:34:21,479 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 18:34:21,481 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 18:34:21,489 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 18:34:21,490 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 18:34:21,491 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 18:34:21,495 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 18:34:21,498 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 18:34:21,500 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 18:34:21,501 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 18:34:21,503 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 18:34:21,507 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 18:34:21,507 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 18:34:21,507 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 18:34:21,508 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 18:34:21,510 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 18:34:21,510 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 18:34:21,511 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 18:34:21,514 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 18:34:21,514 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 18:34:21,515 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 18:34:21,515 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 18:34:21,515 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 18:34:21,516 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 18:34:21,517 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 18:34:21,517 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 18:34:21,533 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 18:34:21,533 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 18:34:21,534 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 18:34:21,534 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 18:34:21,535 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 18:34:21,536 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 18:34:21,536 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 18:34:21,537 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 18:34:21,537 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 18:34:21,537 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 18:34:21,537 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 18:34:21,537 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 18:34:21,538 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 18:34:21,544 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 18:34:21,544 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 18:34:21,544 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 18:34:21,546 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 18:34:21,547 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 18:34:21,547 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 18:34:21,547 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 18:34:21,547 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 18:34:21,547 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 18:34:21,548 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 18:34:21,548 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 18:34:21,548 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 18:34:21,548 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 18:34:21,549 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 18:34:21,549 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 18:34:21,549 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 18:34:21,549 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 18:34:21,549 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 18:34:21,549 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 18:34:21,550 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 18:34:21,550 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 18:34:21,551 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 18:34:21,599 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 18:34:21,619 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 18:34:21,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 18:34:21,625 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 18:34:21,625 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 18:34:21,626 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label59_true-unreach-call.c [2018-11-12 18:34:21,702 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e8238357/71cda080ae244841b984bc7b14e0bbd4/FLAG439acd5f9 [2018-11-12 18:34:22,217 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 18:34:22,218 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label59_true-unreach-call.c [2018-11-12 18:34:22,230 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e8238357/71cda080ae244841b984bc7b14e0bbd4/FLAG439acd5f9 [2018-11-12 18:34:22,249 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e8238357/71cda080ae244841b984bc7b14e0bbd4 [2018-11-12 18:34:22,258 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 18:34:22,259 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 18:34:22,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 18:34:22,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 18:34:22,264 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 18:34:22,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:34:22" (1/1) ... [2018-11-12 18:34:22,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a2d08f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:34:22, skipping insertion in model container [2018-11-12 18:34:22,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:34:22" (1/1) ... [2018-11-12 18:34:22,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 18:34:22,337 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 18:34:22,788 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:34:22,792 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 18:34:22,951 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:34:22,979 INFO L193 MainTranslator]: Completed translation [2018-11-12 18:34:22,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:34:22 WrapperNode [2018-11-12 18:34:22,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 18:34:22,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 18:34:22,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 18:34:22,982 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 18:34:22,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:34:22" (1/1) ... [2018-11-12 18:34:23,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:34:22" (1/1) ... [2018-11-12 18:34:23,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 18:34:23,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 18:34:23,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 18:34:23,147 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 18:34:23,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:34:22" (1/1) ... [2018-11-12 18:34:23,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:34:22" (1/1) ... [2018-11-12 18:34:23,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:34:22" (1/1) ... [2018-11-12 18:34:23,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:34:22" (1/1) ... [2018-11-12 18:34:23,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:34:22" (1/1) ... [2018-11-12 18:34:23,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:34:22" (1/1) ... [2018-11-12 18:34:23,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:34:22" (1/1) ... [2018-11-12 18:34:23,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 18:34:23,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 18:34:23,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 18:34:23,264 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 18:34:23,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:34:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 18:34:23,332 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 18:34:23,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 18:34:23,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 18:34:23,333 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 18:34:23,333 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 18:34:23,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 18:34:23,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 18:34:23,334 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 18:34:23,334 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 18:34:26,359 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 18:34:26,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:34:26 BoogieIcfgContainer [2018-11-12 18:34:26,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 18:34:26,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 18:34:26,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 18:34:26,364 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 18:34:26,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 06:34:22" (1/3) ... [2018-11-12 18:34:26,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637d16de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:34:26, skipping insertion in model container [2018-11-12 18:34:26,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:34:22" (2/3) ... [2018-11-12 18:34:26,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637d16de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:34:26, skipping insertion in model container [2018-11-12 18:34:26,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:34:26" (3/3) ... [2018-11-12 18:34:26,368 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label59_true-unreach-call.c [2018-11-12 18:34:26,377 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 18:34:26,385 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 18:34:26,400 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 18:34:26,438 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 18:34:26,438 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 18:34:26,439 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 18:34:26,439 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 18:34:26,439 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 18:34:26,439 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 18:34:26,439 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 18:34:26,440 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 18:34:26,466 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-11-12 18:34:26,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-11-12 18:34:26,479 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:34:26,480 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:34:26,482 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:34:26,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:34:26,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1019321972, now seen corresponding path program 1 times [2018-11-12 18:34:26,492 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:34:26,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:34:26,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:34:26,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:34:26,543 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:34:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:34:27,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:34:27,060 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:34:27,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 18:34:27,061 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:34:27,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 18:34:27,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 18:34:27,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:34:27,091 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2018-11-12 18:34:29,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:34:29,437 INFO L93 Difference]: Finished difference Result 737 states and 1298 transitions. [2018-11-12 18:34:29,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 18:34:29,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2018-11-12 18:34:29,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:34:29,461 INFO L225 Difference]: With dead ends: 737 [2018-11-12 18:34:29,461 INFO L226 Difference]: Without dead ends: 515 [2018-11-12 18:34:29,469 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:34:29,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-11-12 18:34:29,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 356. [2018-11-12 18:34:29,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-11-12 18:34:29,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 613 transitions. [2018-11-12 18:34:29,551 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 613 transitions. Word has length 72 [2018-11-12 18:34:29,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:34:29,552 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 613 transitions. [2018-11-12 18:34:29,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 18:34:29,553 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 613 transitions. [2018-11-12 18:34:29,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-12 18:34:29,562 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:34:29,563 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:34:29,563 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:34:29,564 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:34:29,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1630388773, now seen corresponding path program 1 times [2018-11-12 18:34:29,564 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:34:29,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:34:29,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:34:29,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:34:29,566 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:34:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:34:30,038 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 57 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:34:30,039 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:34:30,039 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:34:30,040 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 144 with the following transitions: [2018-11-12 18:34:30,042 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [477], [479], [482], [490], [495], [498], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-12 18:34:30,087 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:34:30,087 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:34:30,552 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:34:30,972 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:34:30,975 INFO L272 AbstractInterpreter]: Visited 79 different actions 223 times. Merged at 5 different actions 9 times. Never widened. Performed 2031 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2031 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 18:34:31,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:34:31,023 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:34:31,023 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:34:31,023 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 18:34:31,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:34:31,038 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:34:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:34:31,143 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:34:31,372 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:34:31,372 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:34:31,553 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:34:31,581 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:34:31,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-11-12 18:34:31,582 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:34:31,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 18:34:31,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 18:34:31,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-12 18:34:31,584 INFO L87 Difference]: Start difference. First operand 356 states and 613 transitions. Second operand 3 states. [2018-11-12 18:34:32,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:34:32,822 INFO L93 Difference]: Finished difference Result 994 states and 1782 transitions. [2018-11-12 18:34:32,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 18:34:32,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2018-11-12 18:34:32,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:34:32,830 INFO L225 Difference]: With dead ends: 994 [2018-11-12 18:34:32,830 INFO L226 Difference]: Without dead ends: 644 [2018-11-12 18:34:32,834 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 286 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-12 18:34:32,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2018-11-12 18:34:32,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 644. [2018-11-12 18:34:32,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2018-11-12 18:34:32,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1034 transitions. [2018-11-12 18:34:32,891 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1034 transitions. Word has length 143 [2018-11-12 18:34:32,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:34:32,891 INFO L480 AbstractCegarLoop]: Abstraction has 644 states and 1034 transitions. [2018-11-12 18:34:32,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 18:34:32,892 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1034 transitions. [2018-11-12 18:34:32,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-11-12 18:34:32,900 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:34:32,901 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:34:32,901 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:34:32,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:34:32,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1733767164, now seen corresponding path program 1 times [2018-11-12 18:34:32,902 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:34:32,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:34:32,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:34:32,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:34:32,903 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:34:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:34:33,186 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:34:33,392 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:34:33,392 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:34:33,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 18:34:33,393 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:34:33,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:34:33,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:34:33,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:34:33,394 INFO L87 Difference]: Start difference. First operand 644 states and 1034 transitions. Second operand 6 states. [2018-11-12 18:34:36,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:34:36,894 INFO L93 Difference]: Finished difference Result 1847 states and 3197 transitions. [2018-11-12 18:34:36,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:34:36,898 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-11-12 18:34:36,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:34:36,915 INFO L225 Difference]: With dead ends: 1847 [2018-11-12 18:34:36,915 INFO L226 Difference]: Without dead ends: 1209 [2018-11-12 18:34:36,922 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 18:34:36,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2018-11-12 18:34:36,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1185. [2018-11-12 18:34:36,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1185 states. [2018-11-12 18:34:36,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1872 transitions. [2018-11-12 18:34:36,988 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1872 transitions. Word has length 154 [2018-11-12 18:34:36,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:34:36,990 INFO L480 AbstractCegarLoop]: Abstraction has 1185 states and 1872 transitions. [2018-11-12 18:34:36,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:34:36,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1872 transitions. [2018-11-12 18:34:36,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-11-12 18:34:36,997 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:34:36,999 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:34:36,999 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:34:37,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:34:37,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1561785849, now seen corresponding path program 1 times [2018-11-12 18:34:37,000 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:34:37,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:34:37,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:34:37,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:34:37,002 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:34:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:34:37,299 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:34:37,300 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:34:37,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 18:34:37,300 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:34:37,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 18:34:37,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 18:34:37,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:34:37,302 INFO L87 Difference]: Start difference. First operand 1185 states and 1872 transitions. Second operand 4 states. [2018-11-12 18:34:38,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:34:38,892 INFO L93 Difference]: Finished difference Result 2364 states and 3744 transitions. [2018-11-12 18:34:38,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 18:34:38,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 201 [2018-11-12 18:34:38,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:34:38,906 INFO L225 Difference]: With dead ends: 2364 [2018-11-12 18:34:38,906 INFO L226 Difference]: Without dead ends: 1185 [2018-11-12 18:34:38,913 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:34:38,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2018-11-12 18:34:38,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1185. [2018-11-12 18:34:38,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1185 states. [2018-11-12 18:34:38,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1698 transitions. [2018-11-12 18:34:38,953 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1698 transitions. Word has length 201 [2018-11-12 18:34:38,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:34:38,955 INFO L480 AbstractCegarLoop]: Abstraction has 1185 states and 1698 transitions. [2018-11-12 18:34:38,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 18:34:38,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1698 transitions. [2018-11-12 18:34:38,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-11-12 18:34:38,961 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:34:38,961 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:34:38,961 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:34:38,961 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:34:38,963 INFO L82 PathProgramCache]: Analyzing trace with hash -809847816, now seen corresponding path program 1 times [2018-11-12 18:34:38,964 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:34:38,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:34:38,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:34:38,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:34:38,965 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:34:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:34:39,254 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:34:39,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:34:39,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 18:34:39,255 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:34:39,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:34:39,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:34:39,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:34:39,256 INFO L87 Difference]: Start difference. First operand 1185 states and 1698 transitions. Second operand 6 states. [2018-11-12 18:34:40,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:34:40,583 INFO L93 Difference]: Finished difference Result 3008 states and 4520 transitions. [2018-11-12 18:34:40,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:34:40,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2018-11-12 18:34:40,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:34:40,600 INFO L225 Difference]: With dead ends: 3008 [2018-11-12 18:34:40,600 INFO L226 Difference]: Without dead ends: 1829 [2018-11-12 18:34:40,607 INFO L604 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 [2018-11-12 18:34:40,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2018-11-12 18:34:40,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1793. [2018-11-12 18:34:40,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1793 states. [2018-11-12 18:34:40,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2543 transitions. [2018-11-12 18:34:40,685 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2543 transitions. Word has length 204 [2018-11-12 18:34:40,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:34:40,685 INFO L480 AbstractCegarLoop]: Abstraction has 1793 states and 2543 transitions. [2018-11-12 18:34:40,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:34:40,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2543 transitions. [2018-11-12 18:34:40,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-12 18:34:40,694 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:34:40,695 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:34:40,695 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:34:40,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:34:40,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1298522180, now seen corresponding path program 1 times [2018-11-12 18:34:40,696 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:34:40,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:34:40,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:34:40,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:34:40,697 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:34:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:34:41,010 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:34:41,433 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 130 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 18:34:41,434 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:34:41,434 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:34:41,434 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 225 with the following transitions: [2018-11-12 18:34:41,435 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [477], [479], [482], [490], [494], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [542], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-12 18:34:41,441 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:34:41,441 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:34:41,640 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:34:41,641 INFO L272 AbstractInterpreter]: Visited 87 different actions 87 times. Never merged. Never widened. Performed 1390 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1390 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 18:34:41,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:34:41,679 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:34:42,434 INFO L227 lantSequenceWeakener]: Weakened 202 states. On average, predicates are now at 74.06% of their original sizes. [2018-11-12 18:34:42,436 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:34:43,699 INFO L415 sIntCurrentIteration]: We unified 223 AI predicates to 223 [2018-11-12 18:34:43,700 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:34:43,700 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:34:43,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-12 18:34:43,701 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:34:43,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 18:34:43,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 18:34:43,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-12 18:34:43,702 INFO L87 Difference]: Start difference. First operand 1793 states and 2543 transitions. Second operand 10 states. [2018-11-12 18:34:47,554 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:34:55,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:34:55,410 INFO L93 Difference]: Finished difference Result 3729 states and 5328 transitions. [2018-11-12 18:34:55,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 18:34:55,411 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 224 [2018-11-12 18:34:55,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:34:55,422 INFO L225 Difference]: With dead ends: 3729 [2018-11-12 18:34:55,422 INFO L226 Difference]: Without dead ends: 1942 [2018-11-12 18:34:55,430 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 227 GetRequests, 204 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-12 18:34:55,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2018-11-12 18:34:55,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1937. [2018-11-12 18:34:55,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1937 states. [2018-11-12 18:34:55,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 2695 transitions. [2018-11-12 18:34:55,484 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 2695 transitions. Word has length 224 [2018-11-12 18:34:55,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:34:55,485 INFO L480 AbstractCegarLoop]: Abstraction has 1937 states and 2695 transitions. [2018-11-12 18:34:55,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 18:34:55,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 2695 transitions. [2018-11-12 18:34:55,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-11-12 18:34:55,492 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:34:55,492 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:34:55,492 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:34:55,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:34:55,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1893058164, now seen corresponding path program 1 times [2018-11-12 18:34:55,493 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:34:55,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:34:55,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:34:55,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:34:55,494 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:34:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:34:56,091 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 134 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:34:56,091 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:34:56,091 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:34:56,091 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 231 with the following transitions: [2018-11-12 18:34:56,092 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [477], [479], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-12 18:34:56,095 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:34:56,096 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:34:56,164 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:34:56,617 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:34:56,618 INFO L272 AbstractInterpreter]: Visited 96 different actions 274 times. Merged at 5 different actions 9 times. Never widened. Performed 3673 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3673 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 18:34:56,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:34:56,658 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:34:56,658 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:34:56,658 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 18:34:56,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:34:56,671 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:34:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:34:56,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:35:11,648 WARN L179 SmtUtils]: Spent 14.64 s on a formula simplification. DAG size of input: 113 DAG size of output: 48 [2018-11-12 18:35:11,835 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 133 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:35:11,835 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:35:12,011 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2018-11-12 18:35:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 133 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:35:12,320 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:35:12,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 14 [2018-11-12 18:35:12,321 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:35:12,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-12 18:35:12,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-12 18:35:12,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2018-11-12 18:35:12,322 INFO L87 Difference]: Start difference. First operand 1937 states and 2695 transitions. Second operand 12 states. [2018-11-12 18:35:16,606 WARN L179 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 53 DAG size of output: 28 [2018-11-12 18:35:22,520 WARN L179 SmtUtils]: Spent 5.74 s on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2018-11-12 18:35:33,348 WARN L179 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 57 DAG size of output: 26 [2018-11-12 18:35:37,503 WARN L179 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 54 DAG size of output: 28 [2018-11-12 18:35:46,315 WARN L179 SmtUtils]: Spent 8.62 s on a formula simplification that was a NOOP. DAG size: 53 [2018-11-12 18:35:57,108 WARN L179 SmtUtils]: Spent 10.37 s on a formula simplification that was a NOOP. DAG size: 55 [2018-11-12 18:36:14,374 WARN L179 SmtUtils]: Spent 17.16 s on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2018-11-12 18:36:22,719 WARN L179 SmtUtils]: Spent 8.10 s on a formula simplification. DAG size of input: 61 DAG size of output: 28 [2018-11-12 18:36:26,168 WARN L179 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2018-11-12 18:36:28,265 WARN L179 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 56 DAG size of output: 31 [2018-11-12 18:36:33,335 WARN L179 SmtUtils]: Spent 4.52 s on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2018-11-12 18:36:35,280 WARN L179 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 53 DAG size of output: 28 [2018-11-12 18:36:48,563 WARN L179 SmtUtils]: Spent 11.67 s on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-11-12 18:36:50,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:36:50,017 INFO L93 Difference]: Finished difference Result 5680 states and 8469 transitions. [2018-11-12 18:36:50,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-12 18:36:50,018 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 230 [2018-11-12 18:36:50,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:36:50,039 INFO L225 Difference]: With dead ends: 5680 [2018-11-12 18:36:50,039 INFO L226 Difference]: Without dead ends: 3893 [2018-11-12 18:36:50,056 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 481 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 93.6s TimeCoverageRelationStatistics Valid=736, Invalid=2234, Unknown=0, NotChecked=0, Total=2970 [2018-11-12 18:36:50,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3893 states. [2018-11-12 18:36:50,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3893 to 3784. [2018-11-12 18:36:50,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3784 states. [2018-11-12 18:36:50,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 4772 transitions. [2018-11-12 18:36:50,163 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 4772 transitions. Word has length 230 [2018-11-12 18:36:50,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:36:50,164 INFO L480 AbstractCegarLoop]: Abstraction has 3784 states and 4772 transitions. [2018-11-12 18:36:50,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-12 18:36:50,164 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 4772 transitions. [2018-11-12 18:36:50,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-11-12 18:36:50,173 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:36:50,174 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:36:50,174 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:36:50,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:50,174 INFO L82 PathProgramCache]: Analyzing trace with hash -353802736, now seen corresponding path program 1 times [2018-11-12 18:36:50,175 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:36:50,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:50,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:50,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:50,176 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:36:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:50,405 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 131 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-12 18:36:50,405 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:36:50,405 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:36:50,406 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 235 with the following transitions: [2018-11-12 18:36:50,406 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [477], [479], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [542], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-12 18:36:50,409 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:36:50,409 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:36:50,486 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:36:50,930 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:36:50,930 INFO L272 AbstractInterpreter]: Visited 91 different actions 528 times. Merged at 7 different actions 40 times. Widened at 1 different actions 1 times. Performed 6034 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6034 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 6 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 18:36:50,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:50,969 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:36:50,969 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:36:50,969 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 18:36:50,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:50,986 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:36:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:51,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:36:51,593 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:36:51,593 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:36:52,114 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:36:52,135 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:36:52,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2018-11-12 18:36:52,135 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:36:52,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:36:52,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:36:52,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-11-12 18:36:52,137 INFO L87 Difference]: Start difference. First operand 3784 states and 4772 transitions. Second operand 11 states. [2018-11-12 18:36:56,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:36:56,067 INFO L93 Difference]: Finished difference Result 11295 states and 14688 transitions. [2018-11-12 18:36:56,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-12 18:36:56,068 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 234 [2018-11-12 18:36:56,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:36:56,080 INFO L225 Difference]: With dead ends: 11295 [2018-11-12 18:36:56,081 INFO L226 Difference]: Without dead ends: 3404 [2018-11-12 18:36:56,117 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 472 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2018-11-12 18:36:56,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3404 states. [2018-11-12 18:36:56,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3404 to 2528. [2018-11-12 18:36:56,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2528 states. [2018-11-12 18:36:56,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 2811 transitions. [2018-11-12 18:36:56,189 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 2811 transitions. Word has length 234 [2018-11-12 18:36:56,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:36:56,190 INFO L480 AbstractCegarLoop]: Abstraction has 2528 states and 2811 transitions. [2018-11-12 18:36:56,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:36:56,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 2811 transitions. [2018-11-12 18:36:56,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-11-12 18:36:56,200 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:36:56,200 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 18:36:56,200 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:36:56,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:56,201 INFO L82 PathProgramCache]: Analyzing trace with hash -366661461, now seen corresponding path program 1 times [2018-11-12 18:36:56,201 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:36:56,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:56,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:56,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:56,202 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:36:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:57,058 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 286 proven. 166 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 18:36:57,058 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:36:57,058 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:36:57,059 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 364 with the following transitions: [2018-11-12 18:36:57,059 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [477], [479], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [566], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-12 18:36:57,063 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:36:57,063 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:36:57,205 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:36:57,468 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:36:57,468 INFO L272 AbstractInterpreter]: Visited 126 different actions 379 times. Merged at 8 different actions 24 times. Never widened. Performed 5231 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5231 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 18:36:57,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:57,503 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:36:57,504 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:36:57,504 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 18:36:57,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:57,521 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:36:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:57,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:36:58,021 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 370 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-12 18:36:58,022 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:36:58,474 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 370 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-12 18:36:58,493 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:36:58,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 16 [2018-11-12 18:36:58,494 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:36:58,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-12 18:36:58,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-12 18:36:58,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2018-11-12 18:36:58,496 INFO L87 Difference]: Start difference. First operand 2528 states and 2811 transitions. Second operand 15 states. [2018-11-12 18:36:59,760 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2018-11-12 18:37:01,653 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2018-11-12 18:37:04,521 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2018-11-12 18:37:04,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:37:04,834 INFO L93 Difference]: Finished difference Result 6502 states and 7492 transitions. [2018-11-12 18:37:04,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-11-12 18:37:04,834 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 363 [2018-11-12 18:37:04,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:37:04,853 INFO L225 Difference]: With dead ends: 6502 [2018-11-12 18:37:04,853 INFO L226 Difference]: Without dead ends: 4124 [2018-11-12 18:37:04,859 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 750 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=468, Invalid=1982, Unknown=0, NotChecked=0, Total=2450 [2018-11-12 18:37:04,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4124 states. [2018-11-12 18:37:04,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4124 to 3284. [2018-11-12 18:37:04,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3284 states. [2018-11-12 18:37:04,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3284 states to 3284 states and 3643 transitions. [2018-11-12 18:37:04,959 INFO L78 Accepts]: Start accepts. Automaton has 3284 states and 3643 transitions. Word has length 363 [2018-11-12 18:37:04,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:37:04,959 INFO L480 AbstractCegarLoop]: Abstraction has 3284 states and 3643 transitions. [2018-11-12 18:37:04,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-12 18:37:04,960 INFO L276 IsEmpty]: Start isEmpty. Operand 3284 states and 3643 transitions. [2018-11-12 18:37:04,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-11-12 18:37:04,973 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:37:04,973 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:37:04,974 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:37:04,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:37:04,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1827425236, now seen corresponding path program 1 times [2018-11-12 18:37:04,974 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:37:04,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:37:04,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:37:04,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:37:04,976 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:37:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:37:05,485 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-12 18:37:05,668 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-12 18:37:06,043 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-12 18:37:06,798 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 256 proven. 223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:37:06,798 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:37:06,798 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:37:06,799 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 405 with the following transitions: [2018-11-12 18:37:06,799 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [477], [479], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [754], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-12 18:37:06,802 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:37:06,802 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:37:07,034 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:37:07,661 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:37:07,662 INFO L272 AbstractInterpreter]: Visited 145 different actions 865 times. Merged at 8 different actions 52 times. Widened at 1 different actions 2 times. Performed 11542 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11542 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 10 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 18:37:07,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:37:07,668 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:37:07,668 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:37:07,668 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 18:37:07,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:37:07,677 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:37:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:37:07,780 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:37:12,685 WARN L179 SmtUtils]: Spent 4.51 s on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2018-11-12 18:37:15,194 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 62 [2018-11-12 18:37:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 168 proven. 208 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-11-12 18:37:15,724 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:37:16,063 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:16,799 WARN L179 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 42 [2018-11-12 18:37:16,804 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:16,913 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:17,005 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:17,461 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:17,516 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:17,592 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:17,659 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:17,718 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:17,775 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:17,959 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:18,013 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:18,069 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:18,124 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:18,229 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:18,287 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:18,346 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:18,475 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:18,569 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:18,765 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:18,857 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:18,916 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:18,975 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:19,032 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:19,298 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:19,356 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:19,446 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:19,505 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:19,565 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:19,621 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:19,694 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:19,766 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:19,830 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:19,924 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:19,997 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:20,055 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:20,114 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:20,173 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:20,231 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:20,291 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:20,351 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:20,419 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:20,474 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:20,533 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:20,590 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:20,646 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:20,715 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:20,771 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:20,841 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:20,905 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:20,968 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:21,218 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:21,286 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:21,358 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:21,427 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:21,486 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:21,552 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:21,615 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:21,670 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:21,727 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:21,876 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:21,955 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:22,461 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:22,962 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:23,467 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:23,663 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:23,736 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:23,801 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:24,119 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:24,182 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:24,243 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:24,668 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:24,904 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:24,967 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:25,021 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:25,077 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:25,132 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:25,186 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:25,250 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:25,336 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-12 18:37:26,046 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 370 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-11-12 18:37:26,069 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:37:26,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 6] total 28 [2018-11-12 18:37:26,069 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:37:26,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-12 18:37:26,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-12 18:37:26,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=654, Unknown=1, NotChecked=0, Total=756 [2018-11-12 18:37:26,071 INFO L87 Difference]: Start difference. First operand 3284 states and 3643 transitions. Second operand 25 states. [2018-11-12 18:37:28,410 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2018-11-12 18:37:30,148 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 29 [2018-11-12 18:37:31,404 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 80 [2018-11-12 18:37:33,484 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2018-11-12 18:37:37,746 WARN L179 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 95 DAG size of output: 85 [2018-11-12 18:37:40,759 WARN L179 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 60 DAG size of output: 35 [2018-11-12 18:37:42,615 WARN L179 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 50 DAG size of output: 26 [2018-11-12 18:37:49,309 WARN L179 SmtUtils]: Spent 5.14 s on a formula simplification. DAG size of input: 128 DAG size of output: 93 [2018-11-12 18:37:49,953 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2018-11-12 18:37:50,385 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2018-11-12 18:38:01,283 WARN L179 SmtUtils]: Spent 8.95 s on a formula simplification. DAG size of input: 129 DAG size of output: 102 [2018-11-12 18:38:02,930 WARN L179 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 87 DAG size of output: 40 [2018-11-12 18:38:14,051 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 61 [2018-11-12 18:38:17,363 WARN L179 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 69 DAG size of output: 43 Received shutdown request... [2018-11-12 18:38:31,184 WARN L187 SmtUtils]: Removed 5 from assertion stack [2018-11-12 18:38:31,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-11-12 18:38:31,185 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 18:38:31,188 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 18:38:31,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 06:38:31 BoogieIcfgContainer [2018-11-12 18:38:31,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 18:38:31,190 INFO L168 Benchmark]: Toolchain (without parser) took 248930.89 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -623.9 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-12 18:38:31,191 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 18:38:31,191 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.86 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-12 18:38:31,192 INFO L168 Benchmark]: Boogie Procedure Inliner took 164.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -820.0 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2018-11-12 18:38:31,193 INFO L168 Benchmark]: Boogie Preprocessor took 117.27 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 18:38:31,193 INFO L168 Benchmark]: RCFGBuilder took 3096.18 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: 106.6 MB). Peak memory consumption was 106.6 MB. Max. memory is 7.1 GB. [2018-11-12 18:38:31,194 INFO L168 Benchmark]: TraceAbstraction took 244827.75 ms. Allocated memory was 2.3 GB in the beginning and 3.5 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 47.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-12 18:38:31,199 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 719.86 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 164.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -820.0 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.27 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3096.18 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: 106.6 MB). Peak memory consumption was 106.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 244827.75 ms. Allocated memory was 2.3 GB in the beginning and 3.5 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 47.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 199]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 199). Cancelled while BasicCegarLoop was constructing difference of abstraction (3284states) and FLOYD_HOARE automaton (currently 90 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 51. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 244.7s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 195.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1534 SDtfs, 16123 SDslu, 2179 SDs, 0 SdLazy, 25860 SolverSat, 4449 SolverUnsat, 80 SolverUnknown, 0 SolverNotchecked, 60.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 3317 GetRequests, 2933 SyntacticMatches, 111 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7242 ImplicationChecksByTransitivity, 151.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3784occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.6s AbstIntTime, 6 AbstIntIterations, 1 AbstIntStrong, 0.9974753945605966 AbsIntWeakeningRatio, 0.11659192825112108 AbsIntAvgWeakeningVarsNumRemoved, -0.29596412556053814 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 2049 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 41.1s InterpolantComputationTime, 3603 NumberOfCodeBlocks, 3603 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 4957 ConstructedInterpolants, 173 QuantifiedInterpolants, 11179806 SizeOfPredicates, 9 NumberOfNonLiveVariables, 2268 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 3742/4631 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown