java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:05:47,785 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:05:47,787 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:05:47,808 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:05:47,809 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:05:47,810 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:05:47,812 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:05:47,815 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:05:47,816 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:05:47,819 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:05:47,820 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:05:47,820 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:05:47,821 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:05:47,825 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:05:47,835 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:05:47,836 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:05:47,838 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:05:47,843 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:05:47,845 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:05:47,848 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:05:47,850 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:05:47,851 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:05:47,854 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:05:47,854 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:05:47,855 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:05:47,858 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:05:47,860 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:05:47,861 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:05:47,861 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:05:47,865 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:05:47,866 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:05:47,867 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:05:47,868 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:05:47,868 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:05:47,870 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:05:47,871 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:05:47,871 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:05:47,898 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:05:47,898 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:05:47,899 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:05:47,900 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:05:47,900 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:05:47,900 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:05:47,900 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:05:47,901 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:05:47,901 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:05:47,901 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:05:47,901 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:05:47,901 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:05:47,902 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:05:47,903 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:05:47,903 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:05:47,903 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:05:47,903 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:05:47,903 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:05:47,904 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:05:47,904 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:05:47,904 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:05:47,904 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:05:47,905 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:05:47,905 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:05:47,905 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:05:47,905 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:05:47,905 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:05:47,906 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:05:47,906 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:05:47,906 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:05:47,906 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:05:47,906 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:05:47,907 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:05:47,907 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:05:47,954 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:05:47,972 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:05:47,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:05:47,979 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:05:47,980 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:05:47,980 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label05_true-unreach-call.c [2018-10-24 21:05:48,062 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/87239d0bb/992ae08ce922435b83951e94f1ddb5e9/FLAGa999c13e0 [2018-10-24 21:05:48,721 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:05:48,726 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label05_true-unreach-call.c [2018-10-24 21:05:48,748 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/87239d0bb/992ae08ce922435b83951e94f1ddb5e9/FLAGa999c13e0 [2018-10-24 21:05:48,768 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/87239d0bb/992ae08ce922435b83951e94f1ddb5e9 [2018-10-24 21:05:48,782 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:05:48,784 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:05:48,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:05:48,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:05:48,791 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:05:48,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:05:48" (1/1) ... [2018-10-24 21:05:48,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aff6451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:05:48, skipping insertion in model container [2018-10-24 21:05:48,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:05:48" (1/1) ... [2018-10-24 21:05:48,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:05:48,905 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:05:49,641 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:05:49,647 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:05:49,880 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:05:49,901 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:05:49,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:05:49 WrapperNode [2018-10-24 21:05:49,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:05:49,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:05:49,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:05:49,903 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:05:49,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:05:49" (1/1) ... [2018-10-24 21:05:49,953 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:05:49" (1/1) ... [2018-10-24 21:05:50,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:05:50,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:05:50,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:05:50,234 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:05:50,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:05:49" (1/1) ... [2018-10-24 21:05:50,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:05:49" (1/1) ... [2018-10-24 21:05:50,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:05:49" (1/1) ... [2018-10-24 21:05:50,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:05:49" (1/1) ... [2018-10-24 21:05:50,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:05:49" (1/1) ... [2018-10-24 21:05:50,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:05:49" (1/1) ... [2018-10-24 21:05:50,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:05:49" (1/1) ... [2018-10-24 21:05:50,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:05:50,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:05:50,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:05:50,388 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:05:50,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:05:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:05:50,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:05:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:05:50,468 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:05:50,468 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:05:50,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:05:50,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:05:50,468 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:05:50,469 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:05:54,945 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:05:54,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:05:54 BoogieIcfgContainer [2018-10-24 21:05:54,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:05:54,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:05:54,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:05:54,951 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:05:54,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:05:48" (1/3) ... [2018-10-24 21:05:54,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba549e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:05:54, skipping insertion in model container [2018-10-24 21:05:54,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:05:49" (2/3) ... [2018-10-24 21:05:54,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba549e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:05:54, skipping insertion in model container [2018-10-24 21:05:54,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:05:54" (3/3) ... [2018-10-24 21:05:54,957 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label05_true-unreach-call.c [2018-10-24 21:05:54,968 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:05:54,981 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:05:54,999 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:05:55,039 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:05:55,039 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:05:55,039 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:05:55,039 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:05:55,040 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:05:55,040 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:05:55,040 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:05:55,040 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:05:55,078 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 21:05:55,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-24 21:05:55,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:05:55,093 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:05:55,096 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:05:55,101 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:05:55,101 INFO L82 PathProgramCache]: Analyzing trace with hash 620538673, now seen corresponding path program 1 times [2018-10-24 21:05:55,103 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:05:55,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:05:55,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:05:55,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:05:55,157 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:05:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:05:55,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:05:55,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:05:55,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:05:55,764 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:05:55,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:05:55,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:05:55,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:05:55,791 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-24 21:05:58,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:05:58,854 INFO L93 Difference]: Finished difference Result 985 states and 1761 transitions. [2018-10-24 21:05:58,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:05:58,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2018-10-24 21:05:58,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:05:58,883 INFO L225 Difference]: With dead ends: 985 [2018-10-24 21:05:58,884 INFO L226 Difference]: Without dead ends: 686 [2018-10-24 21:05:58,896 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 [2018-10-24 21:05:58,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-10-24 21:05:59,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2018-10-24 21:05:59,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-10-24 21:05:59,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1046 transitions. [2018-10-24 21:05:59,029 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1046 transitions. Word has length 71 [2018-10-24 21:05:59,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:05:59,029 INFO L481 AbstractCegarLoop]: Abstraction has 686 states and 1046 transitions. [2018-10-24 21:05:59,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:05:59,030 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1046 transitions. [2018-10-24 21:05:59,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-24 21:05:59,050 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:05:59,050 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:05:59,052 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:05:59,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:05:59,053 INFO L82 PathProgramCache]: Analyzing trace with hash -2040216429, now seen corresponding path program 1 times [2018-10-24 21:05:59,053 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:05:59,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:05:59,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:05:59,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:05:59,056 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:05:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:05:59,610 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:05:59,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:05:59,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:05:59,611 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:05:59,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:05:59,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:05:59,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:05:59,615 INFO L87 Difference]: Start difference. First operand 686 states and 1046 transitions. Second operand 6 states. [2018-10-24 21:06:04,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:06:04,977 INFO L93 Difference]: Finished difference Result 2339 states and 3736 transitions. [2018-10-24 21:06:04,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:06:04,979 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2018-10-24 21:06:04,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:06:04,992 INFO L225 Difference]: With dead ends: 2339 [2018-10-24 21:06:04,992 INFO L226 Difference]: Without dead ends: 1659 [2018-10-24 21:06:04,998 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:06:05,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2018-10-24 21:06:05,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1642. [2018-10-24 21:06:05,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1642 states. [2018-10-24 21:06:05,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2356 transitions. [2018-10-24 21:06:05,079 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2356 transitions. Word has length 152 [2018-10-24 21:06:05,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:06:05,080 INFO L481 AbstractCegarLoop]: Abstraction has 1642 states and 2356 transitions. [2018-10-24 21:06:05,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:06:05,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2356 transitions. [2018-10-24 21:06:05,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-24 21:06:05,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:06:05,088 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:06:05,090 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:06:05,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:06:05,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1556450923, now seen corresponding path program 1 times [2018-10-24 21:06:05,091 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:06:05,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:06:05,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:06:05,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:06:05,092 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:06:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:06:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:06:06,084 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:06:06,084 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:06:06,086 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 204 with the following transitions: [2018-10-24 21:06:06,088 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [469], [471], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:06:06,173 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:06:06,174 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:06:10,447 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:06:27,520 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 21:06:27,522 INFO L272 AbstractInterpreter]: Visited 140 different actions 406 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 21:06:27,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:06:27,557 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 21:06:27,557 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:06:27,557 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 [2018-10-24 21:06:27,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:06:27,588 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 21:06:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:06:27,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 21:06:27,955 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:06:27,955 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 21:06:28,142 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:06:28,182 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:06:28,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2018-10-24 21:06:28,183 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:06:28,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:06:28,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:06:28,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:06:28,185 INFO L87 Difference]: Start difference. First operand 1642 states and 2356 transitions. Second operand 3 states. [2018-10-24 21:06:31,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:06:31,265 INFO L93 Difference]: Finished difference Result 4776 states and 7052 transitions. [2018-10-24 21:06:31,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:06:31,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2018-10-24 21:06:31,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:06:31,292 INFO L225 Difference]: With dead ends: 4776 [2018-10-24 21:06:31,292 INFO L226 Difference]: Without dead ends: 3140 [2018-10-24 21:06:31,305 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:06:31,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2018-10-24 21:06:31,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 3127. [2018-10-24 21:06:31,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3127 states. [2018-10-24 21:06:31,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3127 states to 3127 states and 4357 transitions. [2018-10-24 21:06:31,410 INFO L78 Accepts]: Start accepts. Automaton has 3127 states and 4357 transitions. Word has length 203 [2018-10-24 21:06:31,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:06:31,411 INFO L481 AbstractCegarLoop]: Abstraction has 3127 states and 4357 transitions. [2018-10-24 21:06:31,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:06:31,411 INFO L276 IsEmpty]: Start isEmpty. Operand 3127 states and 4357 transitions. [2018-10-24 21:06:31,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-10-24 21:06:31,421 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:06:31,421 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 21:06:31,422 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:06:31,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:06:31,422 INFO L82 PathProgramCache]: Analyzing trace with hash -937553027, now seen corresponding path program 1 times [2018-10-24 21:06:31,422 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:06:31,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:06:31,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:06:31,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:06:31,424 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:06:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:06:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 128 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:06:31,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:06:31,752 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:06:31,753 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 240 with the following transitions: [2018-10-24 21:06:31,753 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [469], [471], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:06:31,762 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:06:31,763 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:06:33,100 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:06:35,393 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:06:35,394 INFO L272 AbstractInterpreter]: Visited 100 different actions 100 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-24 21:06:35,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:06:35,433 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:06:38,659 INFO L232 lantSequenceWeakener]: Weakened 231 states. On average, predicates are now at 73.95% of their original sizes. [2018-10-24 21:06:38,659 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:06:39,193 INFO L413 sIntCurrentIteration]: We have 238 unified AI predicates [2018-10-24 21:06:39,193 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:06:39,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:06:39,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 21:06:39,197 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:06:39,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:06:39,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:06:39,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:06:39,199 INFO L87 Difference]: Start difference. First operand 3127 states and 4357 transitions. Second operand 7 states. [2018-10-24 21:07:08,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:07:08,465 INFO L93 Difference]: Finished difference Result 6250 states and 8716 transitions. [2018-10-24 21:07:08,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:07:08,465 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 239 [2018-10-24 21:07:08,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:07:08,481 INFO L225 Difference]: With dead ends: 6250 [2018-10-24 21:07:08,481 INFO L226 Difference]: Without dead ends: 3129 [2018-10-24 21:07:08,491 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 239 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:07:08,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2018-10-24 21:07:08,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 3127. [2018-10-24 21:07:08,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3127 states. [2018-10-24 21:07:08,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3127 states to 3127 states and 4342 transitions. [2018-10-24 21:07:08,569 INFO L78 Accepts]: Start accepts. Automaton has 3127 states and 4342 transitions. Word has length 239 [2018-10-24 21:07:08,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:07:08,570 INFO L481 AbstractCegarLoop]: Abstraction has 3127 states and 4342 transitions. [2018-10-24 21:07:08,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:07:08,570 INFO L276 IsEmpty]: Start isEmpty. Operand 3127 states and 4342 transitions. [2018-10-24 21:07:08,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-10-24 21:07:08,579 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:07:08,579 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:07:08,579 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:07:08,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:07:08,580 INFO L82 PathProgramCache]: Analyzing trace with hash 22969815, now seen corresponding path program 1 times [2018-10-24 21:07:08,580 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:07:08,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:07:08,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:07:08,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:07:08,581 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:07:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:07:08,923 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 4 proven. 131 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-10-24 21:07:08,924 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:07:08,924 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:07:08,924 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 284 with the following transitions: [2018-10-24 21:07:08,925 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [469], [471], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:07:08,931 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:07:08,931 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:07:12,830 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:07:26,236 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:07:26,236 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 21:07:26,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:07:26,244 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:07:30,972 INFO L232 lantSequenceWeakener]: Weakened 151 states. On average, predicates are now at 74.74% of their original sizes. [2018-10-24 21:07:30,973 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:07:42,073 INFO L413 sIntCurrentIteration]: We have 282 unified AI predicates [2018-10-24 21:07:42,073 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:07:42,073 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:07:42,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [9] total 24 [2018-10-24 21:07:42,074 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:07:42,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 21:07:42,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 21:07:42,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2018-10-24 21:07:42,075 INFO L87 Difference]: Start difference. First operand 3127 states and 4342 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 21:09:52,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 21:09:52,547 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:09:52,553 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:09:52,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:09:52 BoogieIcfgContainer [2018-10-24 21:09:52,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:09:52,554 INFO L168 Benchmark]: Toolchain (without parser) took 243772.21 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -768.7 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 21:09:52,556 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-24 21:09:52,557 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1117.29 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:09:52,558 INFO L168 Benchmark]: Boogie Procedure Inliner took 331.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -831.3 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-24 21:09:52,559 INFO L168 Benchmark]: Boogie Preprocessor took 153.95 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:09:52,559 INFO L168 Benchmark]: RCFGBuilder took 4558.20 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 174.0 MB). Peak memory consumption was 174.0 MB. Max. memory is 7.1 GB. [2018-10-24 21:09:52,560 INFO L168 Benchmark]: TraceAbstraction took 237606.55 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -178.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 21:09:52,566 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1117.29 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 331.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -831.3 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 153.95 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4558.20 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 174.0 MB). Peak memory consumption was 174.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237606.55 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -178.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 198]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 198). Cancelled while BasicCegarLoop was constructing difference of abstraction (3127states) and FLOYD_HOARE automaton (currently 17 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (895 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 237.5s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 171.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1172 SDtfs, 3066 SDslu, 790 SDs, 0 SdLazy, 5601 SolverSat, 829 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 84.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 957 GetRequests, 914 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 16.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3127occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 42.4s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9961233211233216 AbsIntWeakeningRatio, 0.1076923076923077 AbsIntAvgWeakeningVarsNumRemoved, 669.0653846153846 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 32 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1151 NumberOfCodeBlocks, 1151 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1347 ConstructedInterpolants, 0 QuantifiedInterpolants, 934509 SizeOfPredicates, 2 NumberOfNonLiveVariables, 369 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 475/680 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown