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/Problem15_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:44:54,997 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:44:54,999 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:44:55,012 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:44:55,012 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:44:55,013 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:44:55,015 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:44:55,017 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:44:55,018 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:44:55,019 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:44:55,020 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:44:55,021 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:44:55,022 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:44:55,023 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:44:55,024 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:44:55,025 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:44:55,026 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:44:55,028 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:44:55,030 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:44:55,031 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:44:55,033 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:44:55,034 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:44:55,036 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:44:55,043 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:44:55,044 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:44:55,045 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:44:55,046 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:44:55,046 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 21:44:55,062 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:44:55,062 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:44:55,063 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:44:55,063 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:44:55,063 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:44:55,064 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:44:55,064 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:44:55,064 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:44:55,064 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:44:55,065 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:44:55,065 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:44:55,065 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:44:55,066 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:44:55,066 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:44:55,066 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:44:55,066 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:44:55,067 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:44:55,067 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:44:55,067 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:44:55,067 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:44:55,068 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:44:55,070 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:44:55,070 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:44:55,070 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:44:55,070 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:44:55,071 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:44:55,071 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:44:55,071 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:44:55,071 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:44:55,071 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:44:55,072 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:44:55,072 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:44:55,072 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:44:55,072 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:44:55,140 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:44:55,161 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:44:55,166 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:44:55,169 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:44:55,169 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:44:55,170 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label05_true-unreach-call.c [2018-10-24 21:44:55,241 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/34efdbd6b/ea70cfaf5e3847178084920c3dd53712/FLAG2feb12f9d [2018-10-24 21:44:55,976 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:44:55,977 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label05_true-unreach-call.c [2018-10-24 21:44:55,996 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/34efdbd6b/ea70cfaf5e3847178084920c3dd53712/FLAG2feb12f9d [2018-10-24 21:44:56,013 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/34efdbd6b/ea70cfaf5e3847178084920c3dd53712 [2018-10-24 21:44:56,025 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:44:56,027 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:44:56,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:44:56,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:44:56,033 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:44:56,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:44:56" (1/1) ... [2018-10-24 21:44:56,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31cb433d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:56, skipping insertion in model container [2018-10-24 21:44:56,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:44:56" (1/1) ... [2018-10-24 21:44:56,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:44:56,153 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:44:56,959 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:44:56,965 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:44:57,267 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:44:57,291 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:44:57,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:57 WrapperNode [2018-10-24 21:44:57,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:44:57,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:44:57,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:44:57,294 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:44:57,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:57" (1/1) ... [2018-10-24 21:44:57,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:57" (1/1) ... [2018-10-24 21:44:57,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:44:57,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:44:57,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:44:57,699 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:44:57,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:57" (1/1) ... [2018-10-24 21:44:57,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:57" (1/1) ... [2018-10-24 21:44:57,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:57" (1/1) ... [2018-10-24 21:44:57,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:57" (1/1) ... [2018-10-24 21:44:57,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:57" (1/1) ... [2018-10-24 21:44:57,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:57" (1/1) ... [2018-10-24 21:44:57,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:57" (1/1) ... [2018-10-24 21:44:57,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:44:57,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:44:57,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:44:57,931 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:44:57,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:57" (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 21:44:58,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:44:58,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:44:58,005 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:44:58,006 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:44:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:44:58,006 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:44:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:44:58,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:44:58,006 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:44:58,007 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:45:04,965 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:45:04,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:45:04 BoogieIcfgContainer [2018-10-24 21:45:04,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:45:04,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:45:04,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:45:04,971 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:45:04,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:44:56" (1/3) ... [2018-10-24 21:45:04,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3675e8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:45:04, skipping insertion in model container [2018-10-24 21:45:04,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:44:57" (2/3) ... [2018-10-24 21:45:04,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3675e8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:45:04, skipping insertion in model container [2018-10-24 21:45:04,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:45:04" (3/3) ... [2018-10-24 21:45:04,975 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label05_true-unreach-call.c [2018-10-24 21:45:04,986 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:45:04,997 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:45:05,015 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:45:05,059 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:45:05,059 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:45:05,060 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:45:05,060 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:45:05,060 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:45:05,060 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:45:05,060 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:45:05,061 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:45:05,094 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 21:45:05,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-24 21:45:05,107 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:45:05,108 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 21:45:05,110 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:45:05,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:45:05,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1575341511, now seen corresponding path program 1 times [2018-10-24 21:45:05,120 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:45:05,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:45:05,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:45:05,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:45:05,171 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:45:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:45:05,705 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 21:45:05,708 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:45:05,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:45:05,708 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:45:05,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:45:05,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:45:05,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:45:05,734 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-24 21:45:17,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:45:17,063 INFO L93 Difference]: Finished difference Result 1514 states and 2777 transitions. [2018-10-24 21:45:17,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:45:17,065 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2018-10-24 21:45:17,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:45:17,095 INFO L225 Difference]: With dead ends: 1514 [2018-10-24 21:45:17,096 INFO L226 Difference]: Without dead ends: 1070 [2018-10-24 21:45:17,108 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 21:45:17,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2018-10-24 21:45:17,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1068. [2018-10-24 21:45:17,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-10-24 21:45:17,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1675 transitions. [2018-10-24 21:45:17,222 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1675 transitions. Word has length 71 [2018-10-24 21:45:17,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:45:17,223 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1675 transitions. [2018-10-24 21:45:17,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:45:17,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1675 transitions. [2018-10-24 21:45:17,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-24 21:45:17,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:45:17,233 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] [2018-10-24 21:45:17,233 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:45:17,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:45:17,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1668103027, now seen corresponding path program 1 times [2018-10-24 21:45:17,234 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:45:17,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:45:17,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:45:17,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:45:17,236 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:45:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:45:17,517 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 21:45:17,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:45:17,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:45:17,518 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:45:17,520 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:45:17,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:45:17,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:45:17,521 INFO L87 Difference]: Start difference. First operand 1068 states and 1675 transitions. Second operand 4 states. [2018-10-24 21:45:24,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:45:24,399 INFO L93 Difference]: Finished difference Result 3988 states and 6459 transitions. [2018-10-24 21:45:24,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:45:24,402 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2018-10-24 21:45:24,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:45:24,426 INFO L225 Difference]: With dead ends: 3988 [2018-10-24 21:45:24,426 INFO L226 Difference]: Without dead ends: 2926 [2018-10-24 21:45:24,438 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:45:24,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2018-10-24 21:45:24,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2613. [2018-10-24 21:45:24,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2613 states. [2018-10-24 21:45:24,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3832 transitions. [2018-10-24 21:45:24,555 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3832 transitions. Word has length 141 [2018-10-24 21:45:24,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:45:24,556 INFO L481 AbstractCegarLoop]: Abstraction has 2613 states and 3832 transitions. [2018-10-24 21:45:24,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:45:24,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3832 transitions. [2018-10-24 21:45:24,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-10-24 21:45:24,572 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:45:24,573 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:45:24,573 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:45:24,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:45:24,573 INFO L82 PathProgramCache]: Analyzing trace with hash -473847581, now seen corresponding path program 1 times [2018-10-24 21:45:24,574 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:45:24,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:45:24,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:45:24,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:45:24,575 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:45:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:45:25,664 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 200 proven. 237 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-10-24 21:45:25,664 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:45:25,664 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:45:25,666 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 348 with the following transitions: [2018-10-24 21:45:25,668 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [473], [481], [489], [497], [505], [513], [521], [529], [537], [541], [543], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:45:25,753 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:45:25,754 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:45:27,535 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:45:42,156 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:45:42,157 INFO L272 AbstractInterpreter]: Visited 109 different actions 314 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:45:42,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:45:42,192 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:45:48,372 INFO L232 lantSequenceWeakener]: Weakened 71 states. On average, predicates are now at 77.85% of their original sizes. [2018-10-24 21:45:48,373 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:47:52,213 INFO L413 sIntCurrentIteration]: We have 346 unified AI predicates [2018-10-24 21:47:52,213 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:47:52,214 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:47:52,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-24 21:47:52,215 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:47:52,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 21:47:52,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 21:47:52,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2018-10-24 21:47:52,217 INFO L87 Difference]: Start difference. First operand 2613 states and 3832 transitions. Second operand 18 states. Received shutdown request... [2018-10-24 21:49:02,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-24 21:49:02,651 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:49:02,657 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:49:02,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:49:02 BoogieIcfgContainer [2018-10-24 21:49:02,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:49:02,658 INFO L168 Benchmark]: Toolchain (without parser) took 246632.42 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 21:49:02,660 INFO L168 Benchmark]: CDTParser took 0.23 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 21:49:02,661 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1263.96 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:49:02,662 INFO L168 Benchmark]: Boogie Procedure Inliner took 404.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -855.5 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:49:02,663 INFO L168 Benchmark]: Boogie Preprocessor took 231.17 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:49:02,664 INFO L168 Benchmark]: RCFGBuilder took 7036.46 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 297.5 MB). Peak memory consumption was 297.5 MB. Max. memory is 7.1 GB. [2018-10-24 21:49:02,665 INFO L168 Benchmark]: TraceAbstraction took 237689.85 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.8 GB in the beginning and 2.7 GB in the end (delta: -859.7 MB). Peak memory consumption was 844.2 MB. Max. memory is 7.1 GB. [2018-10-24 21:49:02,671 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1263.96 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 404.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -855.5 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 231.17 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7036.46 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 297.5 MB). Peak memory consumption was 297.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237689.85 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.8 GB in the beginning and 2.7 GB in the end (delta: -859.7 MB). Peak memory consumption was 844.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 199]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 199). Cancelled while BasicCegarLoop was constructing difference of abstraction (2613states) and FLOYD_HOARE automaton (currently 19 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (236 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 237.6s OverallTime, 3 OverallIterations, 4 TraceHistogramMax, 88.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 628 SDtfs, 2101 SDslu, 359 SDs, 0 SdLazy, 4510 SolverSat, 1240 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 31.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 367 GetRequests, 194 SyntacticMatches, 143 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 127.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2613occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 16.5s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.995853229454637 AbsIntWeakeningRatio, 0.09248554913294797 AbsIntAvgWeakeningVarsNumRemoved, 138.89306358381504 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 315 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 559 NumberOfCodeBlocks, 559 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 556 ConstructedInterpolants, 0 QuantifiedInterpolants, 473008 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 275/512 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown