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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:58:36,837 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:58:36,839 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:58:36,856 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:58:36,856 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:58:36,859 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:58:36,861 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:58:36,863 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:58:36,866 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:58:36,869 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:58:36,872 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:58:36,872 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:58:36,873 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:58:36,874 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:58:36,878 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:58:36,879 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:58:36,881 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:58:36,890 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:58:36,893 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:58:36,895 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:58:36,896 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:58:36,897 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:58:36,900 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:58:36,900 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:58:36,900 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:58:36,901 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:58:36,902 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:58:36,903 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:58:36,903 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:58:36,904 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:58:36,905 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:58:36,905 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 14:58:36,906 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:58:36,906 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:58:36,907 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:58:36,907 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:58:36,908 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 14:58:36,933 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:58:36,933 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:58:36,935 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:58:36,935 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:58:36,935 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:58:36,936 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:58:36,936 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:58:36,936 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:58:36,936 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:58:36,936 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:58:36,937 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:58:36,939 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:58:36,940 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:58:36,940 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:58:36,941 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:58:36,941 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:58:36,941 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:58:36,941 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:58:36,941 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:58:36,942 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:58:36,943 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:58:36,944 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:58:36,944 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:58:36,944 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:58:36,944 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:58:36,944 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:58:36,945 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:58:36,945 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:58:36,945 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:58:36,945 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:58:36,945 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:58:36,945 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:58:36,946 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:58:36,946 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:58:37,012 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:58:37,029 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:58:37,033 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:58:37,035 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:58:37,036 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:58:37,036 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label24_true-unreach-call.c [2018-10-27 14:58:37,098 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9be61634c/095aac37aaa14dcbb6d3104d20e48dee/FLAG935964917 [2018-10-27 14:58:37,821 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:58:37,822 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label24_true-unreach-call.c [2018-10-27 14:58:37,853 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9be61634c/095aac37aaa14dcbb6d3104d20e48dee/FLAG935964917 [2018-10-27 14:58:37,872 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9be61634c/095aac37aaa14dcbb6d3104d20e48dee [2018-10-27 14:58:37,885 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:58:37,889 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:58:37,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:58:37,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:58:37,897 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:58:37,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:58:37" (1/1) ... [2018-10-27 14:58:37,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46764b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:37, skipping insertion in model container [2018-10-27 14:58:37,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:58:37" (1/1) ... [2018-10-27 14:58:37,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:58:38,037 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:58:39,023 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:58:39,028 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:58:39,453 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:58:39,477 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:58:39,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:39 WrapperNode [2018-10-27 14:58:39,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:58:39,479 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:58:39,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:58:39,480 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:58:39,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:39" (1/1) ... [2018-10-27 14:58:39,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:39" (1/1) ... [2018-10-27 14:58:40,011 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:58:40,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:58:40,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:58:40,012 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:58:40,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:39" (1/1) ... [2018-10-27 14:58:40,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:39" (1/1) ... [2018-10-27 14:58:40,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:39" (1/1) ... [2018-10-27 14:58:40,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:39" (1/1) ... [2018-10-27 14:58:40,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:39" (1/1) ... [2018-10-27 14:58:40,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:39" (1/1) ... [2018-10-27 14:58:40,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:39" (1/1) ... [2018-10-27 14:58:40,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:58:40,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:58:40,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:58:40,274 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:58:40,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:58:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:58:40,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:58:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 14:58:40,340 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 14:58:40,340 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:58:40,340 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:58:40,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:58:40,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:58:40,341 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:58:40,341 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:58:53,353 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:58:53,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:58:53 BoogieIcfgContainer [2018-10-27 14:58:53,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:58:53,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:58:53,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:58:53,360 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:58:53,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:58:37" (1/3) ... [2018-10-27 14:58:53,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d91924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:58:53, skipping insertion in model container [2018-10-27 14:58:53,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:58:39" (2/3) ... [2018-10-27 14:58:53,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d91924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:58:53, skipping insertion in model container [2018-10-27 14:58:53,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:58:53" (3/3) ... [2018-10-27 14:58:53,363 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label24_true-unreach-call.c [2018-10-27 14:58:53,374 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:58:53,384 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:58:53,403 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:58:53,450 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:58:53,450 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:58:53,450 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:58:53,450 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:58:53,450 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:58:53,451 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:58:53,451 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:58:53,451 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:58:53,499 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-27 14:58:53,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-27 14:58:53,510 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:58:53,511 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:58:53,514 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:58:53,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:58:53,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1873731430, now seen corresponding path program 1 times [2018-10-27 14:58:53,523 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:58:53,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:58:53,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:58:53,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:58:53,572 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:58:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:58:54,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:58:54,046 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:58:54,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 14:58:54,047 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:58:54,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 14:58:54,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 14:58:54,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:58:54,073 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-27 14:59:08,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:59:08,777 INFO L93 Difference]: Finished difference Result 2133 states and 3959 transitions. [2018-10-27 14:59:08,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 14:59:08,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2018-10-27 14:59:08,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:59:08,813 INFO L225 Difference]: With dead ends: 2133 [2018-10-27 14:59:08,813 INFO L226 Difference]: Without dead ends: 1523 [2018-10-27 14:59:08,823 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:59:08,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2018-10-27 14:59:08,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1516. [2018-10-27 14:59:08,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1516 states. [2018-10-27 14:59:08,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2287 transitions. [2018-10-27 14:59:08,985 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2287 transitions. Word has length 67 [2018-10-27 14:59:08,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:59:08,986 INFO L481 AbstractCegarLoop]: Abstraction has 1516 states and 2287 transitions. [2018-10-27 14:59:08,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 14:59:08,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2287 transitions. [2018-10-27 14:59:08,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-27 14:59:09,000 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:59:09,000 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:59:09,000 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:59:09,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:59:09,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1143793551, now seen corresponding path program 1 times [2018-10-27 14:59:09,001 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:59:09,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:59:09,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:59:09,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:59:09,004 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:59:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:59:09,414 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:59:09,414 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:59:09,414 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:59:09,415 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 143 with the following transitions: [2018-10-27 14:59:09,417 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1146], [1148], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 14:59:09,481 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:59:09,482 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:59:09,882 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 14:59:12,669 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 14:59:12,670 INFO L272 AbstractInterpreter]: Visited 83 different actions 467 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 14:59:12,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:59:12,716 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 14:59:12,717 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:59:12,717 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 14:59:12,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:59:12,735 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 14:59:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:59:12,837 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 14:59:41,696 WARN L179 SmtUtils]: Spent 24.25 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-27 15:00:02,032 WARN L179 SmtUtils]: Spent 16.10 s on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-10-27 15:00:02,720 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 4 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:00:02,720 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:00:07,130 WARN L179 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-10-27 15:00:07,310 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-10-27 15:00:10,044 WARN L179 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-10-27 15:00:10,382 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:00:10,420 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 15:00:10,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-27 15:00:10,421 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:00:10,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:00:10,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:00:10,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=160, Unknown=5, NotChecked=0, Total=210 [2018-10-27 15:00:10,423 INFO L87 Difference]: Start difference. First operand 1516 states and 2287 transitions. Second operand 6 states. [2018-10-27 15:01:26,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:01:26,608 INFO L93 Difference]: Finished difference Result 5727 states and 8870 transitions. [2018-10-27 15:01:26,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 15:01:26,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2018-10-27 15:01:26,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:01:26,648 INFO L225 Difference]: With dead ends: 5727 [2018-10-27 15:01:26,648 INFO L226 Difference]: Without dead ends: 4217 [2018-10-27 15:01:26,659 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 56.3s TimeCoverageRelationStatistics Valid=45, Invalid=160, Unknown=5, NotChecked=0, Total=210 [2018-10-27 15:01:26,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4217 states. [2018-10-27 15:01:26,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4217 to 4185. [2018-10-27 15:01:26,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4185 states. [2018-10-27 15:01:26,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4185 states to 4185 states and 6121 transitions. [2018-10-27 15:01:26,804 INFO L78 Accepts]: Start accepts. Automaton has 4185 states and 6121 transitions. Word has length 142 [2018-10-27 15:01:26,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:01:26,805 INFO L481 AbstractCegarLoop]: Abstraction has 4185 states and 6121 transitions. [2018-10-27 15:01:26,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:01:26,806 INFO L276 IsEmpty]: Start isEmpty. Operand 4185 states and 6121 transitions. [2018-10-27 15:01:26,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-27 15:01:26,813 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:01:26,813 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:01:26,814 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:01:26,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:01:26,814 INFO L82 PathProgramCache]: Analyzing trace with hash 2048723862, now seen corresponding path program 1 times [2018-10-27 15:01:26,814 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:01:26,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:01:26,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:01:26,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:01:26,816 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:01:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:01:27,077 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:01:27,078 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:01:27,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:01:27,078 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:01:27,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:01:27,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:01:27,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:01:27,080 INFO L87 Difference]: Start difference. First operand 4185 states and 6121 transitions. Second operand 6 states. [2018-10-27 15:01:34,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:01:34,561 INFO L93 Difference]: Finished difference Result 12493 states and 19137 transitions. [2018-10-27 15:01:34,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:01:34,565 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2018-10-27 15:01:34,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:01:34,622 INFO L225 Difference]: With dead ends: 12493 [2018-10-27 15:01:34,623 INFO L226 Difference]: Without dead ends: 8314 [2018-10-27 15:01:34,647 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 [2018-10-27 15:01:34,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8314 states. [2018-10-27 15:01:34,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8314 to 8254. [2018-10-27 15:01:34,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8254 states. [2018-10-27 15:01:34,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8254 states to 8254 states and 11654 transitions. [2018-10-27 15:01:34,910 INFO L78 Accepts]: Start accepts. Automaton has 8254 states and 11654 transitions. Word has length 183 [2018-10-27 15:01:34,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:01:34,911 INFO L481 AbstractCegarLoop]: Abstraction has 8254 states and 11654 transitions. [2018-10-27 15:01:34,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:01:34,911 INFO L276 IsEmpty]: Start isEmpty. Operand 8254 states and 11654 transitions. [2018-10-27 15:01:34,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-27 15:01:34,919 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:01:34,920 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:01:34,920 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:01:34,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:01:34,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1461289562, now seen corresponding path program 1 times [2018-10-27 15:01:34,921 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:01:34,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:01:34,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:01:34,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:01:34,922 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:01:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:01:35,531 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:01:35,532 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:01:35,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-27 15:01:35,533 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:01:35,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 15:01:35,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 15:01:35,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 15:01:35,534 INFO L87 Difference]: Start difference. First operand 8254 states and 11654 transitions. Second operand 7 states. [2018-10-27 15:02:05,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:02:05,816 INFO L93 Difference]: Finished difference Result 24204 states and 39496 transitions. [2018-10-27 15:02:05,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 15:02:05,816 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2018-10-27 15:02:05,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:02:05,967 INFO L225 Difference]: With dead ends: 24204 [2018-10-27 15:02:05,968 INFO L226 Difference]: Without dead ends: 15956 [2018-10-27 15:02:06,041 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 15:02:06,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15956 states. [2018-10-27 15:02:06,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15956 to 15719. [2018-10-27 15:02:06,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15719 states. [2018-10-27 15:02:06,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15719 states to 15719 states and 23857 transitions. [2018-10-27 15:02:06,577 INFO L78 Accepts]: Start accepts. Automaton has 15719 states and 23857 transitions. Word has length 201 [2018-10-27 15:02:06,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:02:06,578 INFO L481 AbstractCegarLoop]: Abstraction has 15719 states and 23857 transitions. [2018-10-27 15:02:06,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 15:02:06,578 INFO L276 IsEmpty]: Start isEmpty. Operand 15719 states and 23857 transitions. [2018-10-27 15:02:06,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-27 15:02:06,594 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:02:06,595 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:02:06,595 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:02:06,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:02:06,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1377609661, now seen corresponding path program 1 times [2018-10-27 15:02:06,596 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:02:06,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:02:06,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:02:06,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:02:06,597 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:02:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:02:06,860 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:02:06,921 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 121 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-27 15:02:06,922 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:02:06,922 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:02:06,922 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 226 with the following transitions: [2018-10-27 15:02:06,923 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1146], [1148], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1262], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 15:02:06,929 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:02:06,929 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:02:07,013 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 15:02:09,196 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 15:02:09,197 INFO L272 AbstractInterpreter]: Visited 92 different actions 521 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 15:02:09,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:02:09,236 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 15:02:09,236 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:02:09,237 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 15:02:09,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:02:09,250 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 15:02:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:02:09,346 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:02:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:02:09,784 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:02:10,106 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Abandoning pump threads because process wont die! [2018-10-27 15:02:10,367 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 15:02:10,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 15:02:10,368 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 15:02:10,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 15:02:10,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 15:02:10,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-27 15:02:10,370 INFO L87 Difference]: Start difference. First operand 15719 states and 23857 transitions. Second operand 9 states. [2018-10-27 15:02:17,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:02:17,865 INFO L93 Difference]: Finished difference Result 36848 states and 57060 transitions. [2018-10-27 15:02:17,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 15:02:17,866 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 225 [2018-10-27 15:02:17,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:02:17,963 INFO L225 Difference]: With dead ends: 36848 [2018-10-27 15:02:17,963 INFO L226 Difference]: Without dead ends: 18434 [2018-10-27 15:02:18,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 448 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-10-27 15:02:18,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18434 states. [2018-10-27 15:02:18,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18434 to 18364. [2018-10-27 15:02:18,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18364 states. [2018-10-27 15:02:18,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18364 states to 18364 states and 23512 transitions. [2018-10-27 15:02:18,445 INFO L78 Accepts]: Start accepts. Automaton has 18364 states and 23512 transitions. Word has length 225 [2018-10-27 15:02:18,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:02:18,446 INFO L481 AbstractCegarLoop]: Abstraction has 18364 states and 23512 transitions. [2018-10-27 15:02:18,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 15:02:18,446 INFO L276 IsEmpty]: Start isEmpty. Operand 18364 states and 23512 transitions. [2018-10-27 15:02:18,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-27 15:02:18,452 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:02:18,453 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:02:18,453 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:02:18,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:02:18,453 INFO L82 PathProgramCache]: Analyzing trace with hash -881773889, now seen corresponding path program 1 times [2018-10-27 15:02:18,454 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:02:18,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:02:18,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:02:18,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:02:18,461 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:02:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:02:18,667 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-10-27 15:02:18,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:02:18,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 15:02:18,667 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:02:18,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 15:02:18,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 15:02:18,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 15:02:18,669 INFO L87 Difference]: Start difference. First operand 18364 states and 23512 transitions. Second operand 3 states. [2018-10-27 15:02:25,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:02:25,063 INFO L93 Difference]: Finished difference Result 42531 states and 55990 transitions. [2018-10-27 15:02:25,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 15:02:25,063 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2018-10-27 15:02:25,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:02:25,139 INFO L225 Difference]: With dead ends: 42531 [2018-10-27 15:02:25,140 INFO L226 Difference]: Without dead ends: 22347 [2018-10-27 15:02:25,209 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 15:02:25,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22347 states. [2018-10-27 15:02:25,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22347 to 22343. [2018-10-27 15:02:25,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22343 states. [2018-10-27 15:02:25,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22343 states to 22343 states and 27881 transitions. [2018-10-27 15:02:25,694 INFO L78 Accepts]: Start accepts. Automaton has 22343 states and 27881 transitions. Word has length 242 [2018-10-27 15:02:25,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:02:25,695 INFO L481 AbstractCegarLoop]: Abstraction has 22343 states and 27881 transitions. [2018-10-27 15:02:25,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 15:02:25,695 INFO L276 IsEmpty]: Start isEmpty. Operand 22343 states and 27881 transitions. [2018-10-27 15:02:25,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-10-27 15:02:25,703 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:02:25,703 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:02:25,704 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:02:25,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:02:25,704 INFO L82 PathProgramCache]: Analyzing trace with hash 842603431, now seen corresponding path program 1 times [2018-10-27 15:02:25,705 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:02:25,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:02:25,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:02:25,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:02:25,706 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:02:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:02:26,041 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:02:26,793 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 133 proven. 68 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-27 15:02:26,794 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:02:26,794 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:02:26,794 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 272 with the following transitions: [2018-10-27 15:02:26,795 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1146], [1148], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1408], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 15:02:26,800 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:02:26,800 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:02:26,889 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 15:02:28,577 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 15:02:28,578 INFO L272 AbstractInterpreter]: Visited 125 different actions 732 times. Merged at 7 different actions 38 times. Widened at 1 different actions 1 times. Found 6 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-27 15:02:28,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:02:28,604 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 15:02:28,604 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:02:28,604 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 15:02:28,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:02:28,616 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 15:02:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:02:28,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:02:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-27 15:02:28,908 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:02:29,224 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-27 15:02:29,246 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 15:02:29,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-27 15:02:29,246 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:02:29,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 15:02:29,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 15:02:29,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 15:02:29,248 INFO L87 Difference]: Start difference. First operand 22343 states and 27881 transitions. Second operand 3 states. [2018-10-27 15:02:32,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:02:32,827 INFO L93 Difference]: Finished difference Result 44680 states and 55756 transitions. [2018-10-27 15:02:32,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 15:02:32,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 271 [2018-10-27 15:02:32,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:02:32,896 INFO L225 Difference]: With dead ends: 44680 [2018-10-27 15:02:32,897 INFO L226 Difference]: Without dead ends: 22343 [2018-10-27 15:02:32,956 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 542 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 15:02:32,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22343 states. [2018-10-27 15:02:33,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22343 to 22343. [2018-10-27 15:02:33,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22343 states. [2018-10-27 15:02:33,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22343 states to 22343 states and 27143 transitions. [2018-10-27 15:02:33,408 INFO L78 Accepts]: Start accepts. Automaton has 22343 states and 27143 transitions. Word has length 271 [2018-10-27 15:02:33,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:02:33,409 INFO L481 AbstractCegarLoop]: Abstraction has 22343 states and 27143 transitions. [2018-10-27 15:02:33,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 15:02:33,409 INFO L276 IsEmpty]: Start isEmpty. Operand 22343 states and 27143 transitions. [2018-10-27 15:02:33,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-27 15:02:33,418 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:02:33,418 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:02:33,418 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:02:33,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:02:33,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1923289119, now seen corresponding path program 1 times [2018-10-27 15:02:33,419 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:02:33,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:02:33,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:02:33,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:02:33,420 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:02:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:02:33,727 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-27 15:02:33,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:02:33,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 15:02:33,728 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:02:33,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 15:02:33,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 15:02:33,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 15:02:33,729 INFO L87 Difference]: Start difference. First operand 22343 states and 27143 transitions. Second operand 4 states. [2018-10-27 15:02:43,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:02:43,447 INFO L93 Difference]: Finished difference Result 71560 states and 89395 transitions. [2018-10-27 15:02:43,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 15:02:43,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 293 [2018-10-27 15:02:43,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:02:43,583 INFO L225 Difference]: With dead ends: 71560 [2018-10-27 15:02:43,583 INFO L226 Difference]: Without dead ends: 42479 [2018-10-27 15:02:43,660 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 [2018-10-27 15:02:43,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42479 states. [2018-10-27 15:02:44,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42479 to 40718. [2018-10-27 15:02:44,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40718 states. [2018-10-27 15:02:44,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40718 states to 40718 states and 48075 transitions. [2018-10-27 15:02:44,824 INFO L78 Accepts]: Start accepts. Automaton has 40718 states and 48075 transitions. Word has length 293 [2018-10-27 15:02:44,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:02:44,824 INFO L481 AbstractCegarLoop]: Abstraction has 40718 states and 48075 transitions. [2018-10-27 15:02:44,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 15:02:44,825 INFO L276 IsEmpty]: Start isEmpty. Operand 40718 states and 48075 transitions. [2018-10-27 15:02:44,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-10-27 15:02:44,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:02:44,843 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:02:44,843 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:02:44,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:02:44,844 INFO L82 PathProgramCache]: Analyzing trace with hash -153092305, now seen corresponding path program 1 times [2018-10-27 15:02:44,844 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:02:44,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:02:44,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:02:44,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:02:44,845 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:02:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:02:45,536 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-27 15:02:45,536 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:02:45,536 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:02:45,537 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 367 with the following transitions: [2018-10-27 15:02:45,538 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1146], [1148], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1893], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 15:02:45,551 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:02:45,551 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:02:45,618 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-27 15:02:46,693 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-27 15:02:46,694 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-27 15:02:46,694 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 15:02:46,694 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:02:46,694 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 15:02:46,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:02:46,706 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 15:02:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:02:46,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:02:46,817 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 15:02:47,018 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 15:02:47,018 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 15:02:47,022 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 15:02:47,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:02:47 BoogieIcfgContainer [2018-10-27 15:02:47,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 15:02:47,023 INFO L168 Benchmark]: Toolchain (without parser) took 249137.83 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -861.9 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-27 15:02:47,024 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-27 15:02:47,025 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1587.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-27 15:02:47,026 INFO L168 Benchmark]: Boogie Procedure Inliner took 532.42 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -891.2 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. [2018-10-27 15:02:47,027 INFO L168 Benchmark]: Boogie Preprocessor took 261.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. [2018-10-27 15:02:47,035 INFO L168 Benchmark]: RCFGBuilder took 13080.94 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 467.1 MB). Peak memory consumption was 467.1 MB. Max. memory is 7.1 GB. [2018-10-27 15:02:47,036 INFO L168 Benchmark]: TraceAbstraction took 233666.70 ms. Allocated memory was 2.3 GB in the beginning and 3.5 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 2.3 GB in the end (delta: -605.1 MB). Peak memory consumption was 664.2 MB. Max. memory is 7.1 GB. [2018-10-27 15:02:47,041 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1587.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 532.42 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -891.2 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 261.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13080.94 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 467.1 MB). Peak memory consumption was 467.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233666.70 ms. Allocated memory was 2.3 GB in the beginning and 3.5 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 2.3 GB in the end (delta: -605.1 MB). Peak memory consumption was 664.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 188]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 188). Cancelled while BasicCegarLoop was analyzing trace of length 367 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 233.5s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 156.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3723 SDtfs, 12743 SDslu, 2102 SDs, 0 SdLazy, 23289 SolverSat, 6209 SolverUnsat, 27 SolverUnknown, 0 SolverNotchecked, 145.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1349 GetRequests, 1284 SyntacticMatches, 10 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 59.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40718occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.5s AbstIntTime, 4 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 2171 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 61.7s InterpolantComputationTime, 2262 NumberOfCodeBlocks, 2262 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 2886 ConstructedInterpolants, 141 QuantifiedInterpolants, 3533584 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1182 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 1729/1924 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown