java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label29_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:24:58,378 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:24:58,382 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:24:58,398 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:24:58,399 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:24:58,400 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:24:58,402 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:24:58,404 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:24:58,407 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:24:58,408 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:24:58,411 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:24:58,412 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:24:58,413 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:24:58,414 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:24:58,415 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:24:58,418 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:24:58,420 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:24:58,429 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:24:58,431 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:24:58,434 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:24:58,436 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:24:58,437 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:24:58,440 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:24:58,440 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:24:58,440 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:24:58,443 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:24:58,445 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:24:58,445 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:24:58,448 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:24:58,450 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:24:58,450 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:24:58,451 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:24:58,451 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:24:58,451 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:24:58,453 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:24:58,454 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:24:58,454 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 18:24:58,475 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:24:58,476 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:24:58,477 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:24:58,477 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:24:58,477 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:24:58,478 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:24:58,478 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:24:58,478 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:24:58,478 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:24:58,479 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:24:58,479 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:24:58,479 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:24:58,480 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:24:58,480 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:24:58,480 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:24:58,480 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:24:58,480 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:24:58,481 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:24:58,481 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:24:58,481 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:24:58,481 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:24:58,482 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:24:58,482 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:24:58,482 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:24:58,482 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:24:58,482 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:24:58,483 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:24:58,483 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:24:58,483 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:24:58,483 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:24:58,483 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:24:58,484 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:24:58,484 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:24:58,484 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:24:58,532 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:24:58,551 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:24:58,555 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:24:58,557 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:24:58,558 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:24:58,558 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label29_false-unreach-call.c [2018-10-24 18:24:58,634 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bd2cb5c5b/35d2644b1fec41c28174b99ead02273f/FLAG263f11993 [2018-10-24 18:24:59,476 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:24:59,477 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label29_false-unreach-call.c [2018-10-24 18:24:59,512 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bd2cb5c5b/35d2644b1fec41c28174b99ead02273f/FLAG263f11993 [2018-10-24 18:24:59,532 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bd2cb5c5b/35d2644b1fec41c28174b99ead02273f [2018-10-24 18:24:59,543 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:24:59,545 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:24:59,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:24:59,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:24:59,553 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:24:59,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:24:59" (1/1) ... [2018-10-24 18:24:59,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d4e6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:24:59, skipping insertion in model container [2018-10-24 18:24:59,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:24:59" (1/1) ... [2018-10-24 18:24:59,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:24:59,768 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:25:01,229 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:25:01,234 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:25:02,161 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:25:02,204 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:25:02,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:02 WrapperNode [2018-10-24 18:25:02,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:25:02,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:25:02,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:25:02,207 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:25:02,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:02" (1/1) ... [2018-10-24 18:25:02,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:02" (1/1) ... [2018-10-24 18:25:02,870 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:25:02,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:25:02,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:25:02,870 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:25:02,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:02" (1/1) ... [2018-10-24 18:25:02,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:02" (1/1) ... [2018-10-24 18:25:02,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:02" (1/1) ... [2018-10-24 18:25:02,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:02" (1/1) ... [2018-10-24 18:25:03,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:02" (1/1) ... [2018-10-24 18:25:03,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:02" (1/1) ... [2018-10-24 18:25:03,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:02" (1/1) ... [2018-10-24 18:25:03,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:25:03,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:25:03,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:25:03,210 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:25:03,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:25:03,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:25:03,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:25:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 18:25:03,282 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 18:25:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 18:25:03,282 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 18:25:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:25:03,283 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:25:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:25:03,283 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:25:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:25:03,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:25:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:25:03,284 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:25:14,633 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:25:14,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:25:14 BoogieIcfgContainer [2018-10-24 18:25:14,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:25:14,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:25:14,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:25:14,639 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:25:14,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:24:59" (1/3) ... [2018-10-24 18:25:14,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30db5434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:25:14, skipping insertion in model container [2018-10-24 18:25:14,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:02" (2/3) ... [2018-10-24 18:25:14,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30db5434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:25:14, skipping insertion in model container [2018-10-24 18:25:14,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:25:14" (3/3) ... [2018-10-24 18:25:14,642 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label29_false-unreach-call.c [2018-10-24 18:25:14,652 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:25:14,662 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:25:14,680 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:25:14,726 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:25:14,727 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:25:14,727 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:25:14,727 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:25:14,727 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:25:14,727 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:25:14,727 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:25:14,728 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:25:14,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 18:25:14,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-24 18:25:14,792 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:25:14,793 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] [2018-10-24 18:25:14,796 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:25:14,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:25:14,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1714801547, now seen corresponding path program 1 times [2018-10-24 18:25:14,804 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:25:14,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:14,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:25:14,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:14,860 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:25:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:25:15,252 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 18:25:15,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:25:15,267 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:25:15,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:25:15,267 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:25:15,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:25:15,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:25:15,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:25:15,292 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-24 18:25:31,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:25:31,160 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-10-24 18:25:31,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:25:31,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-10-24 18:25:31,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:25:31,208 INFO L225 Difference]: With dead ends: 3968 [2018-10-24 18:25:31,208 INFO L226 Difference]: Without dead ends: 2842 [2018-10-24 18:25:31,222 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:25:31,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-10-24 18:25:31,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-10-24 18:25:31,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-10-24 18:25:31,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-10-24 18:25:31,410 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 21 [2018-10-24 18:25:31,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:25:31,410 INFO L481 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-10-24 18:25:31,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:25:31,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-10-24 18:25:31,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-24 18:25:31,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:25:31,419 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:25:31,420 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:25:31,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:25:31,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1914103630, now seen corresponding path program 1 times [2018-10-24 18:25:31,420 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:25:31,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:31,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:25:31,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:31,424 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:25:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:25:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:25:31,809 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:25:31,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:25:31,810 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:25:31,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:25:31,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:25:31,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:25:31,812 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-10-24 18:25:44,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:25:44,368 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-10-24 18:25:44,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:25:44,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2018-10-24 18:25:44,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:25:44,399 INFO L225 Difference]: With dead ends: 5673 [2018-10-24 18:25:44,399 INFO L226 Difference]: Without dead ends: 3698 [2018-10-24 18:25:44,407 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:25:44,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-10-24 18:25:44,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-10-24 18:25:44,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-10-24 18:25:44,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5870 transitions. [2018-10-24 18:25:44,522 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5870 transitions. Word has length 91 [2018-10-24 18:25:44,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:25:44,523 INFO L481 AbstractCegarLoop]: Abstraction has 3687 states and 5870 transitions. [2018-10-24 18:25:44,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:25:44,523 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5870 transitions. [2018-10-24 18:25:44,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-24 18:25:44,527 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:25:44,527 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:25:44,527 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:25:44,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:25:44,528 INFO L82 PathProgramCache]: Analyzing trace with hash 688522610, now seen corresponding path program 1 times [2018-10-24 18:25:44,528 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:25:44,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:44,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:25:44,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:44,530 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:25:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:25:44,799 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:25:44,800 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:25:44,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:25:44,800 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:25:44,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:25:44,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:25:44,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:25:44,802 INFO L87 Difference]: Start difference. First operand 3687 states and 5870 transitions. Second operand 5 states. [2018-10-24 18:25:57,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:25:57,210 INFO L93 Difference]: Finished difference Result 10963 states and 17865 transitions. [2018-10-24 18:25:57,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:25:57,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2018-10-24 18:25:57,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:25:57,254 INFO L225 Difference]: With dead ends: 10963 [2018-10-24 18:25:57,254 INFO L226 Difference]: Without dead ends: 7282 [2018-10-24 18:25:57,267 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:25:57,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7282 states. [2018-10-24 18:25:57,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7282 to 7175. [2018-10-24 18:25:57,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7175 states. [2018-10-24 18:25:57,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 10520 transitions. [2018-10-24 18:25:57,504 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 10520 transitions. Word has length 93 [2018-10-24 18:25:57,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:25:57,504 INFO L481 AbstractCegarLoop]: Abstraction has 7175 states and 10520 transitions. [2018-10-24 18:25:57,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:25:57,505 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 10520 transitions. [2018-10-24 18:25:57,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-24 18:25:57,511 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:25:57,511 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:25:57,518 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:25:57,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:25:57,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1754078826, now seen corresponding path program 1 times [2018-10-24 18:25:57,519 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:25:57,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:57,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:25:57,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:57,520 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:25:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:25:57,727 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:25:57,728 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:25:57,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:25:57,729 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:25:57,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:25:57,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:25:57,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:25:57,731 INFO L87 Difference]: Start difference. First operand 7175 states and 10520 transitions. Second operand 3 states. [2018-10-24 18:26:04,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:26:04,415 INFO L93 Difference]: Finished difference Result 21003 states and 32063 transitions. [2018-10-24 18:26:04,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:26:04,416 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2018-10-24 18:26:04,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:26:04,471 INFO L225 Difference]: With dead ends: 21003 [2018-10-24 18:26:04,472 INFO L226 Difference]: Without dead ends: 13834 [2018-10-24 18:26:04,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:26:04,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13834 states. [2018-10-24 18:26:04,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13834 to 13825. [2018-10-24 18:26:04,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13825 states. [2018-10-24 18:26:04,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13825 states to 13825 states and 19394 transitions. [2018-10-24 18:26:04,805 INFO L78 Accepts]: Start accepts. Automaton has 13825 states and 19394 transitions. Word has length 137 [2018-10-24 18:26:04,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:26:04,806 INFO L481 AbstractCegarLoop]: Abstraction has 13825 states and 19394 transitions. [2018-10-24 18:26:04,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:26:04,806 INFO L276 IsEmpty]: Start isEmpty. Operand 13825 states and 19394 transitions. [2018-10-24 18:26:04,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-24 18:26:04,809 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:26:04,809 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:26:04,810 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:26:04,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:26:04,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1376680716, now seen corresponding path program 1 times [2018-10-24 18:26:04,810 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:26:04,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:04,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:26:04,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:04,812 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:26:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:26:05,035 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:26:05,035 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:26:05,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:26:05,035 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:26:05,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:26:05,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:26:05,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:26:05,037 INFO L87 Difference]: Start difference. First operand 13825 states and 19394 transitions. Second operand 4 states. [2018-10-24 18:26:16,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:26:16,114 INFO L93 Difference]: Finished difference Result 53953 states and 81179 transitions. [2018-10-24 18:26:16,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:26:16,118 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2018-10-24 18:26:16,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:26:16,267 INFO L225 Difference]: With dead ends: 53953 [2018-10-24 18:26:16,267 INFO L226 Difference]: Without dead ends: 39321 [2018-10-24 18:26:16,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:26:16,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39321 states. [2018-10-24 18:26:17,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39321 to 39285. [2018-10-24 18:26:17,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39285 states. [2018-10-24 18:26:17,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39285 states to 39285 states and 54287 transitions. [2018-10-24 18:26:17,146 INFO L78 Accepts]: Start accepts. Automaton has 39285 states and 54287 transitions. Word has length 142 [2018-10-24 18:26:17,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:26:17,147 INFO L481 AbstractCegarLoop]: Abstraction has 39285 states and 54287 transitions. [2018-10-24 18:26:17,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:26:17,147 INFO L276 IsEmpty]: Start isEmpty. Operand 39285 states and 54287 transitions. [2018-10-24 18:26:17,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-24 18:26:17,154 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:26:17,155 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:26:17,155 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:26:17,155 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:26:17,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1914147908, now seen corresponding path program 1 times [2018-10-24 18:26:17,156 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:26:17,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:17,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:26:17,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:17,157 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:26:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:26:17,423 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:26:17,546 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 28 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:26:17,546 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:26:17,546 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:26:17,547 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 181 with the following transitions: [2018-10-24 18:26:17,551 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2695], [2697], [2700], [2708], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3128], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3202], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 18:26:17,622 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:26:17,623 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:26:21,762 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:26:21,764 INFO L272 AbstractInterpreter]: Visited 92 different actions 92 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 18:26:21,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:26:21,787 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:26:25,060 INFO L232 lantSequenceWeakener]: Weakened 159 states. On average, predicates are now at 71.23% of their original sizes. [2018-10-24 18:26:25,060 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:26:26,667 INFO L413 sIntCurrentIteration]: We have 179 unified AI predicates [2018-10-24 18:26:26,667 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:26:26,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:26:26,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-24 18:26:26,668 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:26:26,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 18:26:26,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 18:26:26,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-24 18:26:26,670 INFO L87 Difference]: Start difference. First operand 39285 states and 54287 transitions. Second operand 10 states. [2018-10-24 18:27:08,341 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 18:28:46,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 18:28:46,446 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:28:46,452 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:28:46,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:28:46 BoogieIcfgContainer [2018-10-24 18:28:46,452 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:28:46,453 INFO L168 Benchmark]: Toolchain (without parser) took 226910.01 ms. Allocated memory was 1.6 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 995.2 MB. Max. memory is 7.1 GB. [2018-10-24 18:28:46,455 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:28:46,455 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2659.66 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-10-24 18:28:46,456 INFO L168 Benchmark]: Boogie Procedure Inliner took 663.58 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 812.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-24 18:28:46,457 INFO L168 Benchmark]: Boogie Preprocessor took 339.55 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 39.4 MB). Peak memory consumption was 39.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:28:46,458 INFO L168 Benchmark]: RCFGBuilder took 11424.40 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 232.8 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -69.3 MB). Peak memory consumption was 702.0 MB. Max. memory is 7.1 GB. [2018-10-24 18:28:46,459 INFO L168 Benchmark]: TraceAbstraction took 211817.34 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: -790.8 MB). Peak memory consumption was 817.2 MB. Max. memory is 7.1 GB. [2018-10-24 18:28:46,465 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2659.66 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 663.58 ms. Allocated memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: 812.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 339.55 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 39.4 MB). Peak memory consumption was 39.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11424.40 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 232.8 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -69.3 MB). Peak memory consumption was 702.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211817.34 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: -790.8 MB). Peak memory consumption was 817.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 54). Cancelled while BasicCegarLoop was constructing difference of abstraction (39285states) and FLOYD_HOARE automaton (currently 9 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (7027 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 211.7s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 198.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4129 SDtfs, 13101 SDslu, 2260 SDs, 0 SdLazy, 23463 SolverSat, 6166 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 148.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 215 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39285occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9945853029651911 AbsIntWeakeningRatio, 0.15083798882681565 AbsIntAvgWeakeningVarsNumRemoved, 55.84357541899441 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 1024 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 664 NumberOfCodeBlocks, 664 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 658 ConstructedInterpolants, 0 QuantifiedInterpolants, 228262 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 89/156 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown