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/Problem14_label57_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:33:45,890 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:33:45,893 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:33:45,906 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:33:45,907 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:33:45,908 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:33:45,909 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:33:45,911 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:33:45,912 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:33:45,913 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:33:45,914 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:33:45,915 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:33:45,915 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:33:45,916 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:33:45,918 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:33:45,918 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:33:45,919 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:33:45,921 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:33:45,923 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:33:45,924 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:33:45,926 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:33:45,929 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:33:45,933 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:33:45,933 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:33:45,933 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:33:45,937 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:33:45,938 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:33:45,939 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:33:45,942 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:33:45,943 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:33:45,943 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:33:45,944 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 18:33:45,947 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 18:33:45,979 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:33:45,979 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:33:45,981 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:33:45,981 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:33:45,981 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:33:45,981 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:33:45,981 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:33:45,982 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:33:45,982 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:33:45,982 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:33:45,982 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:33:45,982 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:33:45,983 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:33:45,984 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:33:45,984 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:33:45,984 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:33:45,984 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:33:45,984 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:33:45,985 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:33:45,985 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:33:45,985 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:33:45,985 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:33:45,985 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:33:45,987 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:33:45,988 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:33:45,988 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:33:45,988 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:33:45,988 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:33:45,989 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:33:45,989 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:33:45,989 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:33:45,989 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:33:45,989 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:33:45,989 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:33:46,058 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:33:46,073 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:33:46,078 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:33:46,080 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:33:46,080 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:33:46,081 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label57_false-unreach-call_false-termination.c [2018-10-24 18:33:46,137 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bec5ee71c/0cff95f032614d00b242fa05084b72ef/FLAG2f1fa0807 [2018-10-24 18:33:46,707 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:33:46,708 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label57_false-unreach-call_false-termination.c [2018-10-24 18:33:46,727 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bec5ee71c/0cff95f032614d00b242fa05084b72ef/FLAG2f1fa0807 [2018-10-24 18:33:46,747 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bec5ee71c/0cff95f032614d00b242fa05084b72ef [2018-10-24 18:33:46,760 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:33:46,762 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:33:46,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:33:46,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:33:46,768 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:33:46,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:33:46" (1/1) ... [2018-10-24 18:33:46,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75024a1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:46, skipping insertion in model container [2018-10-24 18:33:46,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:33:46" (1/1) ... [2018-10-24 18:33:46,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:33:46,854 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:33:47,420 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:33:47,427 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:33:47,621 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:33:47,642 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:33:47,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:47 WrapperNode [2018-10-24 18:33:47,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:33:47,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:33:47,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:33:47,645 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:33:47,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:47" (1/1) ... [2018-10-24 18:33:47,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:47" (1/1) ... [2018-10-24 18:33:47,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:33:47,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:33:47,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:33:47,887 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:33:47,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:47" (1/1) ... [2018-10-24 18:33:47,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:47" (1/1) ... [2018-10-24 18:33:47,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:47" (1/1) ... [2018-10-24 18:33:47,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:47" (1/1) ... [2018-10-24 18:33:47,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:47" (1/1) ... [2018-10-24 18:33:47,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:47" (1/1) ... [2018-10-24 18:33:47,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:47" (1/1) ... [2018-10-24 18:33:48,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:33:48,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:33:48,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:33:48,008 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:33:48,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:47" (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 18:33:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:33:48,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:33:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:33:48,083 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:33:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:33:48,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:33:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:33:48,084 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:33:52,066 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:33:52,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:33:52 BoogieIcfgContainer [2018-10-24 18:33:52,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:33:52,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:33:52,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:33:52,078 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:33:52,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:33:46" (1/3) ... [2018-10-24 18:33:52,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae63b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:33:52, skipping insertion in model container [2018-10-24 18:33:52,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:47" (2/3) ... [2018-10-24 18:33:52,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae63b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:33:52, skipping insertion in model container [2018-10-24 18:33:52,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:33:52" (3/3) ... [2018-10-24 18:33:52,084 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label57_false-unreach-call_false-termination.c [2018-10-24 18:33:52,093 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:33:52,103 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:33:52,120 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:33:52,173 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:33:52,174 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:33:52,174 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:33:52,174 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:33:52,174 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:33:52,174 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:33:52,175 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:33:52,175 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:33:52,209 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 18:33:52,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-24 18:33:52,220 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:33:52,224 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] [2018-10-24 18:33:52,229 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:33:52,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:52,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1786255177, now seen corresponding path program 1 times [2018-10-24 18:33:52,241 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:33:52,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:52,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:33:52,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:52,292 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:33:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:33:52,729 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 18:33:52,731 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:33:52,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:33:52,732 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:33:52,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:33:52,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:33:52,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:33:52,759 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 18:33:54,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:33:54,690 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 18:33:54,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:33:54,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2018-10-24 18:33:54,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:33:54,713 INFO L225 Difference]: With dead ends: 691 [2018-10-24 18:33:54,714 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 18:33:54,722 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:33:54,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 18:33:54,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 18:33:54,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 18:33:54,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-24 18:33:54,840 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 37 [2018-10-24 18:33:54,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:33:54,841 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-24 18:33:54,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:33:54,841 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-24 18:33:54,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-24 18:33:54,854 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:33:54,854 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:33:54,857 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:33:54,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:54,857 INFO L82 PathProgramCache]: Analyzing trace with hash -778187265, now seen corresponding path program 1 times [2018-10-24 18:33:54,858 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:33:54,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:54,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:33:54,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:54,860 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:33:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:33:55,240 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:33:55,241 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:33:55,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:33:55,241 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:33:55,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:33:55,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:33:55,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:33:55,244 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-24 18:33:57,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:33:57,417 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-24 18:33:57,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:33:57,418 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-10-24 18:33:57,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:33:57,425 INFO L225 Difference]: With dead ends: 1062 [2018-10-24 18:33:57,426 INFO L226 Difference]: Without dead ends: 634 [2018-10-24 18:33:57,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:33:57,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-24 18:33:57,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-24 18:33:57,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-24 18:33:57,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-24 18:33:57,480 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 124 [2018-10-24 18:33:57,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:33:57,481 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-24 18:33:57,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:33:57,481 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-24 18:33:57,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-24 18:33:57,485 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:33:57,486 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:33:57,486 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:33:57,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:57,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1753523144, now seen corresponding path program 1 times [2018-10-24 18:33:57,487 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:33:57,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:57,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:33:57,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:57,488 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:33:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:33:57,700 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:33:57,701 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:33:57,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:33:57,701 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:33:57,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:33:57,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:33:57,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:33:57,703 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-10-24 18:34:01,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:34:01,191 INFO L93 Difference]: Finished difference Result 2352 states and 4016 transitions. [2018-10-24 18:34:01,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:34:01,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2018-10-24 18:34:01,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:34:01,206 INFO L225 Difference]: With dead ends: 2352 [2018-10-24 18:34:01,206 INFO L226 Difference]: Without dead ends: 1733 [2018-10-24 18:34:01,213 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 18:34:01,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2018-10-24 18:34:01,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1733. [2018-10-24 18:34:01,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2018-10-24 18:34:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2647 transitions. [2018-10-24 18:34:01,276 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2647 transitions. Word has length 133 [2018-10-24 18:34:01,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:34:01,277 INFO L481 AbstractCegarLoop]: Abstraction has 1733 states and 2647 transitions. [2018-10-24 18:34:01,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:34:01,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2647 transitions. [2018-10-24 18:34:01,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-24 18:34:01,288 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:34:01,288 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:34:01,289 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:34:01,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:34:01,289 INFO L82 PathProgramCache]: Analyzing trace with hash 853397474, now seen corresponding path program 1 times [2018-10-24 18:34:01,289 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:34:01,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:34:01,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:34:01,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:34:01,291 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:34:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:34:01,788 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 60 proven. 107 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:34:01,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:34:01,788 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:34:01,790 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 263 with the following transitions: [2018-10-24 18:34:01,792 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], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:34:01,865 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:34:01,865 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:34:04,705 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:34:07,323 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:34:07,325 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:34:07,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:34:07,368 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:34:10,505 INFO L232 lantSequenceWeakener]: Weakened 254 states. On average, predicates are now at 77.69% of their original sizes. [2018-10-24 18:34:10,505 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:34:10,971 INFO L413 sIntCurrentIteration]: We have 261 unified AI predicates [2018-10-24 18:34:10,971 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:34:10,973 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:34:10,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-24 18:34:10,973 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:34:10,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 18:34:10,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 18:34:10,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:34:10,975 INFO L87 Difference]: Start difference. First operand 1733 states and 2647 transitions. Second operand 7 states. [2018-10-24 18:34:25,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:34:25,021 INFO L93 Difference]: Finished difference Result 3645 states and 5568 transitions. [2018-10-24 18:34:25,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:34:25,022 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2018-10-24 18:34:25,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:34:25,034 INFO L225 Difference]: With dead ends: 3645 [2018-10-24 18:34:25,035 INFO L226 Difference]: Without dead ends: 1918 [2018-10-24 18:34:25,045 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 262 GetRequests, 256 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 18:34:25,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2018-10-24 18:34:25,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1916. [2018-10-24 18:34:25,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2018-10-24 18:34:25,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2838 transitions. [2018-10-24 18:34:25,114 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2838 transitions. Word has length 262 [2018-10-24 18:34:25,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:34:25,115 INFO L481 AbstractCegarLoop]: Abstraction has 1916 states and 2838 transitions. [2018-10-24 18:34:25,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 18:34:25,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2838 transitions. [2018-10-24 18:34:25,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-10-24 18:34:25,128 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:34:25,129 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:34:25,129 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:34:25,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:34:25,130 INFO L82 PathProgramCache]: Analyzing trace with hash -438030448, now seen corresponding path program 1 times [2018-10-24 18:34:25,130 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:34:25,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:34:25,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:34:25,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:34:25,132 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:34:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:34:25,697 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 18:34:25,885 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 18:34:26,577 WARN L179 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-24 18:34:27,451 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 178 proven. 189 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:34:27,452 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:34:27,452 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:34:27,453 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 348 with the following transitions: [2018-10-24 18:34:27,453 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], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:34:27,459 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:34:27,460 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:34:30,049 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:34:34,616 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:34:34,616 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:34:34,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:34:34,627 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:34:37,821 INFO L232 lantSequenceWeakener]: Weakened 173 states. On average, predicates are now at 78.12% of their original sizes. [2018-10-24 18:34:37,821 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:35:02,703 INFO L413 sIntCurrentIteration]: We have 346 unified AI predicates [2018-10-24 18:35:02,703 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:35:02,704 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:35:02,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [12] total 34 [2018-10-24 18:35:02,704 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:35:02,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-24 18:35:02,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-24 18:35:02,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2018-10-24 18:35:02,706 INFO L87 Difference]: Start difference. First operand 1916 states and 2838 transitions. Second operand 24 states. [2018-10-24 18:37:31,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:37:31,690 INFO L93 Difference]: Finished difference Result 4206 states and 6181 transitions. [2018-10-24 18:37:31,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-24 18:37:31,691 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 347 [2018-10-24 18:37:31,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:37:31,702 INFO L225 Difference]: With dead ends: 4206 [2018-10-24 18:37:31,703 INFO L226 Difference]: Without dead ends: 1921 [2018-10-24 18:37:31,712 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 360 GetRequests, 304 SyntacticMatches, 20 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=248, Invalid=1158, Unknown=0, NotChecked=0, Total=1406 [2018-10-24 18:37:31,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2018-10-24 18:37:31,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1916. [2018-10-24 18:37:31,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2018-10-24 18:37:31,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2832 transitions. [2018-10-24 18:37:31,807 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2832 transitions. Word has length 347 [2018-10-24 18:37:31,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:37:31,807 INFO L481 AbstractCegarLoop]: Abstraction has 1916 states and 2832 transitions. [2018-10-24 18:37:31,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-24 18:37:31,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2832 transitions. [2018-10-24 18:37:31,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-10-24 18:37:31,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:37:31,819 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:37:31,819 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:37:31,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:37:31,820 INFO L82 PathProgramCache]: Analyzing trace with hash 454839356, now seen corresponding path program 1 times [2018-10-24 18:37:31,820 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:37:31,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:37:31,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:37:31,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:37:31,821 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:37:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:37:32,337 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 18:37:32,551 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 18:37:32,784 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 18:37:33,154 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-24 18:37:33,886 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 103 proven. 316 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:37:33,886 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:37:33,887 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:37:33,887 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 374 with the following transitions: [2018-10-24 18:37:33,887 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], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:37:33,892 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:37:33,892 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:37:36,738 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:37:44,228 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:37:44,229 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:37:44,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:37:44,239 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... [2018-10-24 18:37:46,493 INFO L232 lantSequenceWeakener]: Weakened 39 states. On average, predicates are now at 81.01% of their original sizes. [2018-10-24 18:37:46,494 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:37:46,569 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:37:46,575 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:37:46,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:37:46 BoogieIcfgContainer [2018-10-24 18:37:46,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:37:46,577 INFO L168 Benchmark]: Toolchain (without parser) took 239815.61 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 259.1 MB. Max. memory is 7.1 GB. [2018-10-24 18:37:46,578 INFO L168 Benchmark]: CDTParser took 0.19 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 18:37:46,579 INFO L168 Benchmark]: CACSL2BoogieTranslator took 880.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:37:46,580 INFO L168 Benchmark]: Boogie Procedure Inliner took 242.68 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 725.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -830.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:37:46,581 INFO L168 Benchmark]: Boogie Preprocessor took 120.05 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:37:46,583 INFO L168 Benchmark]: RCFGBuilder took 4059.97 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: 130.9 MB). Peak memory consumption was 130.9 MB. Max. memory is 7.1 GB. [2018-10-24 18:37:46,584 INFO L168 Benchmark]: TraceAbstraction took 234507.23 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 3.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 166.2 MB. Max. memory is 7.1 GB. [2018-10-24 18:37:46,593 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 880.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 242.68 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 725.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -830.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.05 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4059.97 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: 130.9 MB). Peak memory consumption was 130.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234507.23 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 3.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 166.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 94). Cancelled while BasicCegarLoop was analyzing trace of length 374 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 3 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 234.4s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 170.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 829 SDtfs, 3706 SDslu, 650 SDs, 0 SdLazy, 6306 SolverSat, 1146 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 642 GetRequests, 567 SyntacticMatches, 23 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 30.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1916occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 23.1s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9960381785613832 AbsIntWeakeningRatio, 0.09193054136874361 AbsIntAvgWeakeningVarsNumRemoved, 730.9519918283963 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 903 NumberOfCodeBlocks, 903 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 898 ConstructedInterpolants, 0 QuantifiedInterpolants, 2271184 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 308/604 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown