java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:58:31,872 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:58:31,875 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:58:31,894 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:58:31,894 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:58:31,896 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:58:31,898 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:58:31,900 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:58:31,902 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:58:31,903 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:58:31,914 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:58:31,914 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:58:31,915 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:58:31,916 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:58:31,917 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:58:31,921 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:58:31,923 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:58:31,926 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:58:31,930 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:58:31,935 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:58:31,939 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:58:31,940 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:58:31,943 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 01:58:31,943 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 01:58:31,944 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 01:58:31,945 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 01:58:31,945 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 01:58:31,946 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 01:58:31,948 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 01:58:31,950 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 01:58:31,950 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 01:58:31,953 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-25 01:58:31,953 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-25 01:58:31,953 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-25 01:58:31,956 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-25 01:58:31,957 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-25 01:58:31,957 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 01:58:31,984 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:58:31,985 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:58:31,986 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:58:31,986 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:58:31,987 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:58:31,987 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:58:31,987 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:58:31,987 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:58:31,988 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:58:31,988 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:58:31,988 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:58:31,988 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:58:31,989 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:58:31,989 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:58:31,990 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:58:31,990 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:58:31,990 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:58:31,991 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:58:31,991 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:58:31,991 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:58:31,991 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:58:31,991 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:58:31,993 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:58:31,994 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:58:31,994 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:58:31,994 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:58:31,994 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:58:31,994 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:58:31,995 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:58:31,995 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:58:31,995 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:58:31,995 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:58:31,995 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:58:31,995 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:58:31,996 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:58:31,996 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:58:32,061 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:58:32,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:58:32,086 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:58:32,088 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:58:32,089 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:58:32,090 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label22_true-unreach-call.c [2018-10-25 01:58:32,156 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b92ef0164/75da8cdb12874152bf3a16230d6df03a/FLAG16c6090a6 [2018-10-25 01:58:32,858 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:58:32,859 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label22_true-unreach-call.c [2018-10-25 01:58:32,889 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b92ef0164/75da8cdb12874152bf3a16230d6df03a/FLAG16c6090a6 [2018-10-25 01:58:32,911 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b92ef0164/75da8cdb12874152bf3a16230d6df03a [2018-10-25 01:58:32,925 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:58:32,928 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:58:32,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:58:32,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:58:32,935 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:58:32,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:58:32" (1/1) ... [2018-10-25 01:58:32,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4aab1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:32, skipping insertion in model container [2018-10-25 01:58:32,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:58:32" (1/1) ... [2018-10-25 01:58:32,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:58:33,063 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:58:34,081 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:58:34,086 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:58:34,445 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:58:34,468 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:58:34,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:34 WrapperNode [2018-10-25 01:58:34,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:58:34,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:58:34,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:58:34,470 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:58:34,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:34" (1/1) ... [2018-10-25 01:58:34,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:34" (1/1) ... [2018-10-25 01:58:34,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:58:34,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:58:34,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:58:34,959 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:58:34,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:34" (1/1) ... [2018-10-25 01:58:34,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:34" (1/1) ... [2018-10-25 01:58:34,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:34" (1/1) ... [2018-10-25 01:58:35,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:34" (1/1) ... [2018-10-25 01:58:35,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:34" (1/1) ... [2018-10-25 01:58:35,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:34" (1/1) ... [2018-10-25 01:58:35,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:34" (1/1) ... [2018-10-25 01:58:35,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:58:35,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:58:35,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:58:35,252 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:58:35,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:34" (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 [2018-10-25 01:58:35,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:58:35,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:58:35,326 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 01:58:35,326 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 01:58:35,326 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:58:35,327 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:58:35,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:58:35,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:58:35,327 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:58:35,328 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:58:49,389 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:58:49,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:58:49 BoogieIcfgContainer [2018-10-25 01:58:49,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:58:49,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:58:49,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:58:49,397 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:58:49,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:58:32" (1/3) ... [2018-10-25 01:58:49,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4d4d7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:58:49, skipping insertion in model container [2018-10-25 01:58:49,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:34" (2/3) ... [2018-10-25 01:58:49,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4d4d7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:58:49, skipping insertion in model container [2018-10-25 01:58:49,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:58:49" (3/3) ... [2018-10-25 01:58:49,403 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label22_true-unreach-call.c [2018-10-25 01:58:49,414 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:58:49,427 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:58:49,443 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:58:49,489 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:58:49,490 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:58:49,490 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:58:49,490 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:58:49,490 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:58:49,490 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:58:49,491 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:58:49,491 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:58:49,526 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-25 01:58:49,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-25 01:58:49,537 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:58:49,538 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] [2018-10-25 01:58:49,541 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:58:49,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:58:49,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1623542220, now seen corresponding path program 1 times [2018-10-25 01:58:49,550 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:58:49,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:49,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:58:49,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:49,607 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:58:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:58:50,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:58:50,143 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:58:50,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:58:50,143 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:58:50,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:58:50,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:58:50,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:58:50,172 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-25 01:59:03,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:59:03,925 INFO L93 Difference]: Finished difference Result 2133 states and 3959 transitions. [2018-10-25 01:59:03,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:59:03,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-10-25 01:59:03,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:59:03,962 INFO L225 Difference]: With dead ends: 2133 [2018-10-25 01:59:03,962 INFO L226 Difference]: Without dead ends: 1523 [2018-10-25 01:59:03,975 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:59:03,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2018-10-25 01:59:04,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1516. [2018-10-25 01:59:04,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1516 states. [2018-10-25 01:59:04,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2287 transitions. [2018-10-25 01:59:04,138 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2287 transitions. Word has length 58 [2018-10-25 01:59:04,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:59:04,140 INFO L481 AbstractCegarLoop]: Abstraction has 1516 states and 2287 transitions. [2018-10-25 01:59:04,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:59:04,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2287 transitions. [2018-10-25 01:59:04,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-25 01:59:04,155 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:59:04,155 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:59:04,156 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:59:04,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:04,156 INFO L82 PathProgramCache]: Analyzing trace with hash 429401034, now seen corresponding path program 1 times [2018-10-25 01:59:04,156 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:59:04,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:04,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:04,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:04,159 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:59:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:04,565 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:59:04,566 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:59:04,566 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:59:04,567 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 134 with the following transitions: [2018-10-25 01:59:04,569 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], [1074], [1076], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:59:04,617 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:59:04,618 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:59:06,664 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:59:06,665 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 01:59:06,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:06,712 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:59:06,712 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:59:06,712 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 [2018-10-25 01:59:06,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:06,727 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:59:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:06,855 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:59:35,779 WARN L179 SmtUtils]: Spent 24.34 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-25 01:59:56,143 WARN L179 SmtUtils]: Spent 16.10 s on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-10-25 01:59:56,745 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 4 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:59:56,746 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:00:01,502 WARN L179 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-10-25 02:00:01,548 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-10-25 02:00:04,140 WARN L179 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-10-25 02:00:04,472 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:00:04,504 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 02:00:04,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-25 02:00:04,505 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:00:04,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:00:04,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:00:04,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=159, Unknown=5, NotChecked=0, Total=210 [2018-10-25 02:00:04,507 INFO L87 Difference]: Start difference. First operand 1516 states and 2287 transitions. Second operand 6 states. [2018-10-25 02:00:48,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:00:48,493 INFO L93 Difference]: Finished difference Result 5732 states and 8876 transitions. [2018-10-25 02:00:48,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 02:00:48,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-10-25 02:00:48,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:00:48,535 INFO L225 Difference]: With dead ends: 5732 [2018-10-25 02:00:48,536 INFO L226 Difference]: Without dead ends: 4222 [2018-10-25 02:00:48,547 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 56.5s TimeCoverageRelationStatistics Valid=46, Invalid=159, Unknown=5, NotChecked=0, Total=210 [2018-10-25 02:00:48,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4222 states. [2018-10-25 02:00:48,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4222 to 4186. [2018-10-25 02:00:48,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4186 states. [2018-10-25 02:00:48,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4186 states to 4186 states and 6435 transitions. [2018-10-25 02:00:48,688 INFO L78 Accepts]: Start accepts. Automaton has 4186 states and 6435 transitions. Word has length 133 [2018-10-25 02:00:48,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:00:48,688 INFO L481 AbstractCegarLoop]: Abstraction has 4186 states and 6435 transitions. [2018-10-25 02:00:48,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:00:48,689 INFO L276 IsEmpty]: Start isEmpty. Operand 4186 states and 6435 transitions. [2018-10-25 02:00:48,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-25 02:00:48,708 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:00:48,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:00:48,709 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:00:48,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:00:48,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1724428511, now seen corresponding path program 1 times [2018-10-25 02:00:48,709 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:00:48,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:00:48,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:00:48,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:00:48,711 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:00:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:00:49,124 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:00:49,354 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:00:49,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:00:49,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:00:49,354 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:00:49,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:00:49,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:00:49,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:00:49,356 INFO L87 Difference]: Start difference. First operand 4186 states and 6435 transitions. Second operand 6 states. [2018-10-25 02:01:00,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:01:00,561 INFO L93 Difference]: Finished difference Result 12479 states and 20015 transitions. [2018-10-25 02:01:00,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 02:01:00,562 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 200 [2018-10-25 02:01:00,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:01:00,626 INFO L225 Difference]: With dead ends: 12479 [2018-10-25 02:01:00,627 INFO L226 Difference]: Without dead ends: 8299 [2018-10-25 02:01:00,648 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 02:01:00,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8299 states. [2018-10-25 02:01:00,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8299 to 8236. [2018-10-25 02:01:00,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8236 states. [2018-10-25 02:01:00,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8236 states to 8236 states and 12109 transitions. [2018-10-25 02:01:00,950 INFO L78 Accepts]: Start accepts. Automaton has 8236 states and 12109 transitions. Word has length 200 [2018-10-25 02:01:00,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:01:00,951 INFO L481 AbstractCegarLoop]: Abstraction has 8236 states and 12109 transitions. [2018-10-25 02:01:00,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:01:00,951 INFO L276 IsEmpty]: Start isEmpty. Operand 8236 states and 12109 transitions. [2018-10-25 02:01:00,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-25 02:01:00,958 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:01:00,959 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, 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] [2018-10-25 02:01:00,959 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:01:00,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:01:00,959 INFO L82 PathProgramCache]: Analyzing trace with hash 576306790, now seen corresponding path program 1 times [2018-10-25 02:01:00,960 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:01:00,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:01:00,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:01:00,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:01:00,964 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:01:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:01:01,333 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:01:01,438 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 103 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-25 02:01:01,439 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:01:01,439 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:01:01,440 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 217 with the following transitions: [2018-10-25 02:01:01,440 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], [1074], [1076], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1247], [1252], [1254], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:01:01,447 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:01:01,448 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:01:02,362 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:01:02,362 INFO L272 AbstractInterpreter]: Visited 90 different actions 256 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 02:01:02,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:01:02,402 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:01:02,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:01:02,402 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 [2018-10-25 02:01:02,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:01:02,422 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:01:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:01:02,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:01:02,866 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:01:02,866 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:01:03,187 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:01:03,208 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 02:01:03,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-25 02:01:03,209 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 02:01:03,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 02:01:03,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 02:01:03,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-25 02:01:03,212 INFO L87 Difference]: Start difference. First operand 8236 states and 12109 transitions. Second operand 9 states. [2018-10-25 02:01:11,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:01:11,085 INFO L93 Difference]: Finished difference Result 19589 states and 29040 transitions. [2018-10-25 02:01:11,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 02:01:11,086 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 216 [2018-10-25 02:01:11,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:01:11,142 INFO L225 Difference]: With dead ends: 19589 [2018-10-25 02:01:11,142 INFO L226 Difference]: Without dead ends: 11359 [2018-10-25 02:01:11,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 430 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-10-25 02:01:11,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11359 states. [2018-10-25 02:01:11,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11359 to 11334. [2018-10-25 02:01:11,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11334 states. [2018-10-25 02:01:11,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11334 states to 11334 states and 14668 transitions. [2018-10-25 02:01:11,490 INFO L78 Accepts]: Start accepts. Automaton has 11334 states and 14668 transitions. Word has length 216 [2018-10-25 02:01:11,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:01:11,491 INFO L481 AbstractCegarLoop]: Abstraction has 11334 states and 14668 transitions. [2018-10-25 02:01:11,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 02:01:11,491 INFO L276 IsEmpty]: Start isEmpty. Operand 11334 states and 14668 transitions. [2018-10-25 02:01:11,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-10-25 02:01:11,501 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:01:11,501 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 02:01:11,502 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:01:11,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:01:11,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1974716581, now seen corresponding path program 1 times [2018-10-25 02:01:11,503 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:01:11,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:01:11,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:01:11,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:01:11,504 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:01:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:01:11,882 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:01:11,997 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 124 proven. 59 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-25 02:01:11,997 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:01:11,997 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:01:11,997 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 272 with the following transitions: [2018-10-25 02:01:11,998 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], [1074], [1076], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [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], [1443], [1448], [1450], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:01:12,003 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:01:12,004 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:01:12,499 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:01:12,500 INFO L272 AbstractInterpreter]: Visited 134 different actions 265 times. Merged at 7 different actions 11 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-25 02:01:12,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:01:12,528 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:01:12,528 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:01:12,529 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 [2018-10-25 02:01:12,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:01:12,545 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:01:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:01:12,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:01:12,843 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-25 02:01:12,844 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:01:13,369 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-25 02:01:13,401 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 02:01:13,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-25 02:01:13,401 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:01:13,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:01:13,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:01:13,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-25 02:01:13,403 INFO L87 Difference]: Start difference. First operand 11334 states and 14668 transitions. Second operand 3 states. [2018-10-25 02:01:17,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:01:17,942 INFO L93 Difference]: Finished difference Result 22662 states and 29330 transitions. [2018-10-25 02:01:17,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:01:17,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 271 [2018-10-25 02:01:17,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:01:17,992 INFO L225 Difference]: With dead ends: 22662 [2018-10-25 02:01:17,992 INFO L226 Difference]: Without dead ends: 11334 [2018-10-25 02:01:18,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 542 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-25 02:01:18,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11334 states. [2018-10-25 02:01:18,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11334 to 11334. [2018-10-25 02:01:18,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11334 states. [2018-10-25 02:01:18,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11334 states to 11334 states and 13915 transitions. [2018-10-25 02:01:18,248 INFO L78 Accepts]: Start accepts. Automaton has 11334 states and 13915 transitions. Word has length 271 [2018-10-25 02:01:18,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:01:18,250 INFO L481 AbstractCegarLoop]: Abstraction has 11334 states and 13915 transitions. [2018-10-25 02:01:18,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:01:18,250 INFO L276 IsEmpty]: Start isEmpty. Operand 11334 states and 13915 transitions. [2018-10-25 02:01:18,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-10-25 02:01:18,259 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:01:18,259 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 02:01:18,259 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:01:18,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:01:18,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1016666412, now seen corresponding path program 1 times [2018-10-25 02:01:18,260 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:01:18,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:01:18,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:01:18,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:01:18,261 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:01:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:01:18,903 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-25 02:01:19,783 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 103 proven. 85 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-25 02:01:19,783 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:01:19,783 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:01:19,784 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 276 with the following transitions: [2018-10-25 02:01:19,784 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], [1074], [1076], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [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], [1474], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:01:19,788 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:01:19,789 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:01:20,180 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:01:20,181 INFO L272 AbstractInterpreter]: Visited 138 different actions 275 times. Merged at 7 different actions 11 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-25 02:01:20,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:01:20,218 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:01:20,218 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:01:20,219 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 [2018-10-25 02:01:20,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:01:20,233 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:01:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:01:20,327 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:01:20,840 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-25 02:01:20,840 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:01:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 107 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:01:21,765 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 02:01:21,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 19 [2018-10-25 02:01:21,765 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 02:01:21,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-25 02:01:21,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-25 02:01:21,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2018-10-25 02:01:21,767 INFO L87 Difference]: Start difference. First operand 11334 states and 13915 transitions. Second operand 14 states. [2018-10-25 02:01:55,881 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 25 [2018-10-25 02:02:31,041 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 25 Received shutdown request... [2018-10-25 02:02:49,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-10-25 02:02:49,432 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 02:02:49,437 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 02:02:49,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 02:02:49 BoogieIcfgContainer [2018-10-25 02:02:49,438 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 02:02:49,439 INFO L168 Benchmark]: Toolchain (without parser) took 256513.45 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -630.6 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-25 02:02:49,440 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 02:02:49,440 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1539.70 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. [2018-10-25 02:02:49,441 INFO L168 Benchmark]: Boogie Procedure Inliner took 488.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 776.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -934.7 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-25 02:02:49,442 INFO L168 Benchmark]: Boogie Preprocessor took 293.08 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. [2018-10-25 02:02:49,442 INFO L168 Benchmark]: RCFGBuilder took 14138.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 463.3 MB). Peak memory consumption was 463.3 MB. Max. memory is 7.1 GB. [2018-10-25 02:02:49,443 INFO L168 Benchmark]: TraceAbstraction took 240046.45 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 998.8 MB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -325.5 MB). Peak memory consumption was 673.2 MB. Max. memory is 7.1 GB. [2018-10-25 02:02:49,448 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1539.70 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 488.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 776.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -934.7 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 293.08 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14138.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 463.3 MB). Peak memory consumption was 463.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 240046.45 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 998.8 MB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -325.5 MB). Peak memory consumption was 673.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 161]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 161). Cancelled while BasicCegarLoop was constructing difference of abstraction (11334states) and FLOYD_HOARE automaton (currently 143 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (44087 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 239.9s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 169.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2126 SDtfs, 26564 SDslu, 3267 SDs, 0 SdLazy, 41489 SolverSat, 10552 SolverUnsat, 20 SolverUnknown, 0 SolverNotchecked, 151.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1989 GetRequests, 1781 SyntacticMatches, 12 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9164 ImplicationChecksByTransitivity, 64.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11334occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.0s AbstIntTime, 4 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 131 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 63.7s InterpolantComputationTime, 2048 NumberOfCodeBlocks, 2048 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2929 ConstructedInterpolants, 230 QuantifiedInterpolants, 4662291 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1633 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 1537/1875 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown