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/Problem01_label15_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:38:06,635 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:38:06,638 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:38:06,657 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:38:06,657 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:38:06,658 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:38:06,660 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:38:06,662 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:38:06,664 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:38:06,664 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:38:06,665 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:38:06,666 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:38:06,667 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:38:06,668 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:38:06,669 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:38:06,670 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:38:06,671 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:38:06,673 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:38:06,675 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:38:06,677 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:38:06,678 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:38:06,680 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:38:06,682 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:38:06,683 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:38:06,683 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:38:06,684 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:38:06,686 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:38:06,686 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:38:06,687 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:38:06,690 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:38:06,691 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:38:06,691 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:38:06,692 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:38:06,692 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:38:06,695 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:38:06,696 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:38:06,696 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 [2018-10-26 22:38:06,728 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:38:06,728 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:38:06,729 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:38:06,729 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 22:38:06,729 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 22:38:06,730 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 22:38:06,732 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 22:38:06,733 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 22:38:06,733 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 22:38:06,733 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 22:38:06,733 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 22:38:06,734 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 22:38:06,734 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:38:06,736 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:38:06,736 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:38:06,736 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:38:06,736 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:38:06,736 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:38:06,737 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:38:06,737 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:38:06,737 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:38:06,737 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:38:06,737 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:38:06,739 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:38:06,739 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:38:06,739 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:38:06,740 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:38:06,740 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:38:06,740 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 22:38:06,740 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:38:06,741 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:38:06,741 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:38:06,741 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 22:38:06,741 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 22:38:06,818 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:38:06,836 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:38:06,841 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:38:06,843 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:38:06,843 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:38:06,844 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label15_false-unreach-call_false-termination.c [2018-10-26 22:38:06,904 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2f2b6c0f2/b903177f5a034da4be033ae7ed564838/FLAGd66f06b03 [2018-10-26 22:38:07,513 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:38:07,516 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label15_false-unreach-call_false-termination.c [2018-10-26 22:38:07,538 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2f2b6c0f2/b903177f5a034da4be033ae7ed564838/FLAGd66f06b03 [2018-10-26 22:38:07,555 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2f2b6c0f2/b903177f5a034da4be033ae7ed564838 [2018-10-26 22:38:07,567 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:38:07,569 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:38:07,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:38:07,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:38:07,578 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:38:07,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:38:07" (1/1) ... [2018-10-26 22:38:07,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5060f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:07, skipping insertion in model container [2018-10-26 22:38:07,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:38:07" (1/1) ... [2018-10-26 22:38:07,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:38:07,664 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:38:08,108 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:38:08,119 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:38:08,264 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:38:08,286 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:38:08,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08 WrapperNode [2018-10-26 22:38:08,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:38:08,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:38:08,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:38:08,288 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:38:08,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:38:08,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:38:08,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:38:08,502 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:38:08,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (1/1) ... [2018-10-26 22:38:08,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:38:08,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:38:08,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:38:08,597 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:38:08,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (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 [2018-10-26 22:38:08,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:38:08,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:38:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 22:38:08,684 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 22:38:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:38:08,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:38:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:38:08,685 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:38:12,355 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:38:12,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:38:12 BoogieIcfgContainer [2018-10-26 22:38:12,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:38:12,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:38:12,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:38:12,369 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:38:12,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:38:07" (1/3) ... [2018-10-26 22:38:12,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b7f0f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:38:12, skipping insertion in model container [2018-10-26 22:38:12,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:38:08" (2/3) ... [2018-10-26 22:38:12,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b7f0f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:38:12, skipping insertion in model container [2018-10-26 22:38:12,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:38:12" (3/3) ... [2018-10-26 22:38:12,374 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label15_false-unreach-call_false-termination.c [2018-10-26 22:38:12,386 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:38:12,398 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:38:12,412 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:38:12,451 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:38:12,451 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:38:12,451 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:38:12,452 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:38:12,452 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:38:12,452 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:38:12,452 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:38:12,452 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:38:12,481 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-10-26 22:38:12,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-26 22:38:12,493 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:38:12,494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:38:12,497 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:38:12,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:38:12,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1860702232, now seen corresponding path program 1 times [2018-10-26 22:38:12,505 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:38:12,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:12,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:38:12,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:12,561 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:38:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:38:13,168 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-26 22:38:13,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:38:13,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:38:13,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:38:13,446 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:38:13,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:38:13,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:38:13,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:38:13,475 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 4 states. [2018-10-26 22:38:15,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:38:15,457 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-10-26 22:38:15,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:38:15,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2018-10-26 22:38:15,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:38:15,480 INFO L225 Difference]: With dead ends: 550 [2018-10-26 22:38:15,480 INFO L226 Difference]: Without dead ends: 340 [2018-10-26 22:38:15,487 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:38:15,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-26 22:38:15,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-10-26 22:38:15,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-26 22:38:15,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 559 transitions. [2018-10-26 22:38:15,561 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 559 transitions. Word has length 88 [2018-10-26 22:38:15,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:38:15,562 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 559 transitions. [2018-10-26 22:38:15,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:38:15,562 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 559 transitions. [2018-10-26 22:38:15,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-26 22:38:15,568 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:38:15,569 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 22:38:15,569 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:38:15,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:38:15,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1452643527, now seen corresponding path program 1 times [2018-10-26 22:38:15,570 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:38:15,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:15,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:38:15,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:15,572 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:38:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:38:15,766 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:38:15,766 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:38:15,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 22:38:15,766 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:38:15,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 22:38:15,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 22:38:15,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:38:15,770 INFO L87 Difference]: Start difference. First operand 340 states and 559 transitions. Second operand 6 states. [2018-10-26 22:38:17,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:38:17,387 INFO L93 Difference]: Finished difference Result 876 states and 1455 transitions. [2018-10-26 22:38:17,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 22:38:17,388 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2018-10-26 22:38:17,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:38:17,396 INFO L225 Difference]: With dead ends: 876 [2018-10-26 22:38:17,396 INFO L226 Difference]: Without dead ends: 542 [2018-10-26 22:38:17,403 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-26 22:38:17,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2018-10-26 22:38:17,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 525. [2018-10-26 22:38:17,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-10-26 22:38:17,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 806 transitions. [2018-10-26 22:38:17,448 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 806 transitions. Word has length 99 [2018-10-26 22:38:17,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:38:17,448 INFO L481 AbstractCegarLoop]: Abstraction has 525 states and 806 transitions. [2018-10-26 22:38:17,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 22:38:17,448 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 806 transitions. [2018-10-26 22:38:17,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-26 22:38:17,456 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:38:17,456 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 22:38:17,456 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:38:17,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:38:17,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1899258651, now seen corresponding path program 1 times [2018-10-26 22:38:17,460 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:38:17,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:17,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:38:17,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:17,462 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:38:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:38:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:38:17,684 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:38:17,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:38:17,684 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:38:17,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:38:17,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:38:17,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:38:17,686 INFO L87 Difference]: Start difference. First operand 525 states and 806 transitions. Second operand 4 states. [2018-10-26 22:38:19,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:38:19,859 INFO L93 Difference]: Finished difference Result 1722 states and 2796 transitions. [2018-10-26 22:38:19,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:38:19,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2018-10-26 22:38:19,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:38:19,882 INFO L225 Difference]: With dead ends: 1722 [2018-10-26 22:38:19,883 INFO L226 Difference]: Without dead ends: 1203 [2018-10-26 22:38:19,886 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 [2018-10-26 22:38:19,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2018-10-26 22:38:19,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203. [2018-10-26 22:38:19,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2018-10-26 22:38:19,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1776 transitions. [2018-10-26 22:38:19,952 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1776 transitions. Word has length 100 [2018-10-26 22:38:19,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:38:19,953 INFO L481 AbstractCegarLoop]: Abstraction has 1203 states and 1776 transitions. [2018-10-26 22:38:19,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:38:19,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1776 transitions. [2018-10-26 22:38:19,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-26 22:38:19,962 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:38:19,963 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:38:19,963 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:38:19,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:38:19,964 INFO L82 PathProgramCache]: Analyzing trace with hash -353488745, now seen corresponding path program 1 times [2018-10-26 22:38:19,964 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:38:19,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:19,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:38:19,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:19,966 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:38:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:38:20,240 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 8 [2018-10-26 22:38:20,336 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:38:20,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:38:20,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-26 22:38:20,337 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:38:20,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 22:38:20,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 22:38:20,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-26 22:38:20,339 INFO L87 Difference]: Start difference. First operand 1203 states and 1776 transitions. Second operand 7 states. [2018-10-26 22:38:21,283 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-26 22:38:23,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:38:23,238 INFO L93 Difference]: Finished difference Result 3407 states and 5228 transitions. [2018-10-26 22:38:23,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-26 22:38:23,244 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2018-10-26 22:38:23,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:38:23,264 INFO L225 Difference]: With dead ends: 3407 [2018-10-26 22:38:23,265 INFO L226 Difference]: Without dead ends: 2210 [2018-10-26 22:38:23,273 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2018-10-26 22:38:23,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2210 states. [2018-10-26 22:38:23,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2210 to 2187. [2018-10-26 22:38:23,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2187 states. [2018-10-26 22:38:23,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3027 transitions. [2018-10-26 22:38:23,369 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3027 transitions. Word has length 123 [2018-10-26 22:38:23,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:38:23,370 INFO L481 AbstractCegarLoop]: Abstraction has 2187 states and 3027 transitions. [2018-10-26 22:38:23,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 22:38:23,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3027 transitions. [2018-10-26 22:38:23,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-26 22:38:23,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:38:23,378 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:38:23,378 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:38:23,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:38:23,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1002628988, now seen corresponding path program 1 times [2018-10-26 22:38:23,379 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:38:23,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:23,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:38:23,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:38:23,381 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:38:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:38:23,836 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:38:23,836 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:38:23,837 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 22:38:23,838 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 136 with the following transitions: [2018-10-26 22:38:23,841 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [17], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [109], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-26 22:38:23,937 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 22:38:23,938 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 22:39:03,654 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 22:39:03,656 INFO L272 AbstractInterpreter]: Visited 92 different actions 157 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-26 22:39:03,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:39:03,668 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 22:39:14,595 INFO L227 lantSequenceWeakener]: Weakened 31 states. On average, predicates are now at 80.71% of their original sizes. [2018-10-26 22:39:14,596 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 22:40:21,118 INFO L415 sIntCurrentIteration]: We unified 134 AI predicates to 134 [2018-10-26 22:40:21,119 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 22:40:21,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:40:21,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-10-26 22:40:21,120 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:40:21,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-26 22:40:21,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-26 22:40:21,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2018-10-26 22:40:21,122 INFO L87 Difference]: Start difference. First operand 2187 states and 3027 transitions. Second operand 19 states. Received shutdown request... [2018-10-26 22:42:25,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-26 22:42:25,831 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 22:42:25,837 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 22:42:25,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:42:25 BoogieIcfgContainer [2018-10-26 22:42:25,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:42:25,839 INFO L168 Benchmark]: Toolchain (without parser) took 258270.49 ms. Allocated memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: 1.5 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 198.0 MB. Max. memory is 7.1 GB. [2018-10-26 22:42:25,840 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 22:42:25,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 714.69 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-26 22:42:25,841 INFO L168 Benchmark]: Boogie Procedure Inliner took 214.37 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 687.3 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -762.7 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2018-10-26 22:42:25,842 INFO L168 Benchmark]: Boogie Preprocessor took 94.41 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 22:42:25,843 INFO L168 Benchmark]: RCFGBuilder took 3765.30 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 119.3 MB). Peak memory consumption was 119.3 MB. Max. memory is 7.1 GB. [2018-10-26 22:42:25,844 INFO L168 Benchmark]: TraceAbstraction took 253474.78 ms. Allocated memory was 2.2 GB in the beginning and 3.0 GB in the end (delta: 771.2 MB). Free memory was 2.0 GB in the beginning and 2.7 GB in the end (delta: -648.8 MB). Peak memory consumption was 122.4 MB. Max. memory is 7.1 GB. [2018-10-26 22:42:25,850 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 714.69 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 214.37 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 687.3 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -762.7 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.41 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3765.30 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 119.3 MB). Peak memory consumption was 119.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 253474.78 ms. Allocated memory was 2.2 GB in the beginning and 3.0 GB in the end (delta: 771.2 MB). Free memory was 2.0 GB in the beginning and 2.7 GB in the end (delta: -648.8 MB). Peak memory consumption was 122.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 419]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 419). Cancelled while BasicCegarLoop was constructing difference of abstraction (2187states) and FLOYD_HOARE automaton (currently 24 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (267 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 253.3s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 133.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 365 SDtfs, 2110 SDslu, 392 SDs, 0 SdLazy, 3581 SolverSat, 779 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 49.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 180 GetRequests, 119 SyntacticMatches, 11 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 85.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2187occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 39.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9933953923760986 AbsIntWeakeningRatio, 0.26119402985074625 AbsIntAvgWeakeningVarsNumRemoved, 181.82089552238807 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 40 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 545 NumberOfCodeBlocks, 545 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 540 ConstructedInterpolants, 0 QuantifiedInterpolants, 264595 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 100/102 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown