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/Problem17_label51_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:13:52,981 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:13:52,983 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:13:53,002 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:13:53,002 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:13:53,003 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:13:53,007 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:13:53,010 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:13:53,013 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:13:53,018 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:13:53,021 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:13:53,022 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:13:53,023 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:13:53,027 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:13:53,028 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:13:53,035 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:13:53,037 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:13:53,041 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:13:53,043 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:13:53,045 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:13:53,046 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:13:53,048 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:13:53,050 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 22:13:53,051 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 22:13:53,051 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 22:13:53,052 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 22:13:53,053 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 22:13:53,054 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 22:13:53,054 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 22:13:53,055 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 22:13:53,056 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 22:13:53,056 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 22:13:53,059 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 22:13:53,083 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:13:53,084 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:13:53,085 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:13:53,085 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:13:53,085 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:13:53,086 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:13:53,088 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:13:53,089 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:13:53,089 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:13:53,089 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:13:53,090 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:13:53,090 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:13:53,091 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:13:53,091 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:13:53,091 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:13:53,091 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:13:53,092 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:13:53,093 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:13:53,094 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:13:53,094 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:13:53,094 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:13:53,094 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:13:53,095 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:13:53,095 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:13:53,095 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:13:53,095 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:13:53,095 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:13:53,096 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:13:53,096 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:13:53,096 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:13:53,096 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:13:53,096 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:13:53,097 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:13:53,098 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:13:53,169 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:13:53,190 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:13:53,195 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:13:53,197 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:13:53,197 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:13:53,198 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label51_true-unreach-call.c [2018-10-24 22:13:53,274 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5cbc2fb79/bc1f84ee2dbb4faa8537fd5cbe062294/FLAG4377a8e38 [2018-10-24 22:13:54,018 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:13:54,020 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label51_true-unreach-call.c [2018-10-24 22:13:54,050 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5cbc2fb79/bc1f84ee2dbb4faa8537fd5cbe062294/FLAG4377a8e38 [2018-10-24 22:13:54,073 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5cbc2fb79/bc1f84ee2dbb4faa8537fd5cbe062294 [2018-10-24 22:13:54,086 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:13:54,089 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:13:54,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:13:54,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:13:54,098 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:13:54,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:13:54" (1/1) ... [2018-10-24 22:13:54,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46764b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:54, skipping insertion in model container [2018-10-24 22:13:54,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:13:54" (1/1) ... [2018-10-24 22:13:54,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:13:54,253 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:13:55,246 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:13:55,251 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:13:55,657 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:13:55,683 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:13:55,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:55 WrapperNode [2018-10-24 22:13:55,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:13:55,685 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:13:55,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:13:55,685 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:13:55,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:55" (1/1) ... [2018-10-24 22:13:55,759 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:55" (1/1) ... [2018-10-24 22:13:56,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:13:56,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:13:56,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:13:56,199 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:13:56,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:55" (1/1) ... [2018-10-24 22:13:56,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:55" (1/1) ... [2018-10-24 22:13:56,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:55" (1/1) ... [2018-10-24 22:13:56,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:55" (1/1) ... [2018-10-24 22:13:56,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:55" (1/1) ... [2018-10-24 22:13:56,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:55" (1/1) ... [2018-10-24 22:13:56,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:55" (1/1) ... [2018-10-24 22:13:56,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:13:56,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:13:56,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:13:56,530 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:13:56,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:55" (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 22:13:56,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:13:56,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:13:56,588 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:13:56,589 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:13:56,589 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:13:56,589 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:13:56,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:13:56,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:13:56,589 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:13:56,590 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:14:06,728 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:14:06,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:14:06 BoogieIcfgContainer [2018-10-24 22:14:06,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:14:06,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:14:06,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:14:06,742 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:14:06,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:13:54" (1/3) ... [2018-10-24 22:14:06,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d91924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:14:06, skipping insertion in model container [2018-10-24 22:14:06,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:13:55" (2/3) ... [2018-10-24 22:14:06,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d91924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:14:06, skipping insertion in model container [2018-10-24 22:14:06,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:14:06" (3/3) ... [2018-10-24 22:14:06,748 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label51_true-unreach-call.c [2018-10-24 22:14:06,758 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:14:06,777 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:14:06,796 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:14:06,842 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:14:06,842 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:14:06,842 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:14:06,842 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:14:06,843 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:14:06,843 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:14:06,843 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:14:06,843 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:14:06,879 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 22:14:06,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-24 22:14:06,888 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:14:06,889 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] [2018-10-24 22:14:06,891 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:14:06,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:14:06,898 INFO L82 PathProgramCache]: Analyzing trace with hash -2022037956, now seen corresponding path program 1 times [2018-10-24 22:14:06,901 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:14:06,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:14:06,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:14:06,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:14:06,952 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:14:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:14:07,442 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 22:14:07,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:14:07,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:14:07,445 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:14:07,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:14:07,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:14:07,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:14:07,474 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 22:14:20,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:14:20,407 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-10-24 22:14:20,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:14:20,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2018-10-24 22:14:20,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:14:20,442 INFO L225 Difference]: With dead ends: 2164 [2018-10-24 22:14:20,442 INFO L226 Difference]: Without dead ends: 1554 [2018-10-24 22:14:20,452 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 22:14:20,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-10-24 22:14:20,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-10-24 22:14:20,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-10-24 22:14:20,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-10-24 22:14:20,585 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 44 [2018-10-24 22:14:20,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:14:20,586 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-10-24 22:14:20,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:14:20,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-10-24 22:14:20,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-24 22:14:20,594 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:14:20,594 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:14:20,594 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:14:20,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:14:20,598 INFO L82 PathProgramCache]: Analyzing trace with hash 760811562, now seen corresponding path program 1 times [2018-10-24 22:14:20,598 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:14:20,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:14:20,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:14:20,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:14:20,601 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:14:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:14:20,895 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:14:20,896 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:14:20,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:14:20,896 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:14:20,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:14:20,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:14:20,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:14:20,899 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-10-24 22:14:31,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:14:31,346 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-10-24 22:14:31,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:14:31,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2018-10-24 22:14:31,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:14:31,364 INFO L225 Difference]: With dead ends: 3031 [2018-10-24 22:14:31,364 INFO L226 Difference]: Without dead ends: 1985 [2018-10-24 22:14:31,368 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:14:31,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-10-24 22:14:31,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-10-24 22:14:31,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-10-24 22:14:31,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-10-24 22:14:31,454 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 116 [2018-10-24 22:14:31,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:14:31,455 INFO L481 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-10-24 22:14:31,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:14:31,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-10-24 22:14:31,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-24 22:14:31,460 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:14:31,460 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:14:31,460 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:14:31,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:14:31,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1743388018, now seen corresponding path program 1 times [2018-10-24 22:14:31,461 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:14:31,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:14:31,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:14:31,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:14:31,462 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:14:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:14:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:14:31,732 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:14:31,732 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:14:31,733 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 120 with the following transitions: [2018-10-24 22:14:31,735 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], [962], [964], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [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] [2018-10-24 22:14:31,826 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:14:31,826 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:14:33,296 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:14:53,504 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:14:53,506 INFO L272 AbstractInterpreter]: Visited 82 different actions 538 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 22:14:53,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:14:53,524 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:14:55,514 INFO L232 lantSequenceWeakener]: Weakened 9 states. On average, predicates are now at 81.48% of their original sizes. [2018-10-24 22:14:55,514 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:15:38,671 INFO L413 sIntCurrentIteration]: We have 118 unified AI predicates [2018-10-24 22:15:38,671 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:15:38,672 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:15:38,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [7] total 27 [2018-10-24 22:15:38,673 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:15:38,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-24 22:15:38,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-24 22:15:38,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2018-10-24 22:15:38,674 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 22 states. Received shutdown request... [2018-10-24 22:18:03,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 22:18:03,529 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:18:03,534 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:18:03,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:18:03 BoogieIcfgContainer [2018-10-24 22:18:03,535 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:18:03,536 INFO L168 Benchmark]: Toolchain (without parser) took 249448.73 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 1.6 GB in the end (delta: -159.3 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 22:18:03,538 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-24 22:18:03,538 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1593.35 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. [2018-10-24 22:18:03,539 INFO L168 Benchmark]: Boogie Procedure Inliner took 513.53 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -918.0 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:18:03,540 INFO L168 Benchmark]: Boogie Preprocessor took 330.68 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: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2018-10-24 22:18:03,541 INFO L168 Benchmark]: RCFGBuilder took 10208.32 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: 448.3 MB). Peak memory consumption was 448.3 MB. Max. memory is 7.1 GB. [2018-10-24 22:18:03,542 INFO L168 Benchmark]: TraceAbstraction took 236796.39 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 1.6 GB in the end (delta: 129.7 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 22:18:03,550 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1593.35 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 513.53 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -918.0 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 330.68 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: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10208.32 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: 448.3 MB). Peak memory consumption was 448.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 236796.39 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 1.6 GB in the end (delta: 129.7 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 119). Cancelled while BasicCegarLoop was constructing difference of abstraction (1959states) and FLOYD_HOARE automaton (currently 18 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (516 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 236.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 168.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 521 SDtfs, 4664 SDslu, 482 SDs, 0 SdLazy, 5357 SolverSat, 1744 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 79.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 147 GetRequests, 79 SyntacticMatches, 26 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 51.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1959occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 21.7s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9924511082138201 AbsIntWeakeningRatio, 0.17796610169491525 AbsIntAvgWeakeningVarsNumRemoved, 786.5254237288135 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 528 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 279 NumberOfCodeBlocks, 279 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 276 ConstructedInterpolants, 0 QuantifiedInterpolants, 97186 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 37/74 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown