java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label45_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:00:42,902 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:00:42,904 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:00:42,922 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:00:42,923 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:00:42,924 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:00:42,926 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:00:42,929 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:00:42,931 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:00:42,933 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:00:42,934 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:00:42,935 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:00:42,936 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:00:42,938 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:00:42,939 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:00:42,940 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:00:42,941 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:00:42,942 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:00:42,946 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:00:42,947 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:00:42,948 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:00:42,952 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:00:42,955 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 03:00:42,955 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 03:00:42,955 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 03:00:42,956 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 03:00:42,957 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 03:00:42,958 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 03:00:42,958 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 03:00:42,960 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 03:00:42,960 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 03:00:42,961 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 03:00:42,963 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:00:42,979 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:00:42,979 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:00:42,980 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:00:42,980 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:00:42,981 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:00:42,981 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:00:42,981 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:00:42,981 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:00:42,981 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:00:42,982 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:00:42,982 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:00:42,982 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:00:42,983 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:00:42,983 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:00:42,983 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:00:42,983 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:00:42,984 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:00:42,984 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:00:42,984 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:00:42,984 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:00:42,984 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:00:42,985 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:00:42,985 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:00:42,985 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:00:42,985 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:00:42,985 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:00:42,986 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:00:42,986 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:00:42,986 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:00:42,986 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:00:42,986 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:00:42,987 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:00:42,987 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:00:42,987 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:00:43,043 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:00:43,060 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:00:43,064 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:00:43,066 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:00:43,066 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:00:43,067 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label45_true-unreach-call.c [2018-11-07 03:00:43,143 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c15a348e7/156bcccff4cd4e64ba095a4a28cdce77/FLAG0f42dbe4c [2018-11-07 03:00:43,736 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:00:43,737 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label45_true-unreach-call.c [2018-11-07 03:00:43,755 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c15a348e7/156bcccff4cd4e64ba095a4a28cdce77/FLAG0f42dbe4c [2018-11-07 03:00:43,777 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c15a348e7/156bcccff4cd4e64ba095a4a28cdce77 [2018-11-07 03:00:43,790 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:00:43,793 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:00:43,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:00:43,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:00:43,800 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:00:43,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:00:43" (1/1) ... [2018-11-07 03:00:43,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3935d1c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:00:43, skipping insertion in model container [2018-11-07 03:00:43,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:00:43" (1/1) ... [2018-11-07 03:00:43,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:00:43,911 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:00:44,558 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:00:44,563 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:00:44,761 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:00:44,783 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:00:44,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:00:44 WrapperNode [2018-11-07 03:00:44,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:00:44,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:00:44,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:00:44,786 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:00:44,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:00:44" (1/1) ... [2018-11-07 03:00:44,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:00:44" (1/1) ... [2018-11-07 03:00:44,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:00:45,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:00:45,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:00:45,000 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:00:45,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:00:44" (1/1) ... [2018-11-07 03:00:45,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:00:44" (1/1) ... [2018-11-07 03:00:45,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:00:44" (1/1) ... [2018-11-07 03:00:45,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:00:44" (1/1) ... [2018-11-07 03:00:45,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:00:44" (1/1) ... [2018-11-07 03:00:45,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:00:44" (1/1) ... [2018-11-07 03:00:45,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:00:44" (1/1) ... [2018-11-07 03:00:45,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:00:45,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:00:45,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:00:45,119 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:00:45,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:00:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 03:00:45,198 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:00:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:00:45,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:00:45,199 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:00:45,199 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:00:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:00:45,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:00:45,200 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:00:45,201 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:00:50,250 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:00:50,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:00:50 BoogieIcfgContainer [2018-11-07 03:00:50,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:00:50,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:00:50,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:00:50,257 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:00:50,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:00:43" (1/3) ... [2018-11-07 03:00:50,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae3f9eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:00:50, skipping insertion in model container [2018-11-07 03:00:50,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:00:44" (2/3) ... [2018-11-07 03:00:50,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae3f9eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:00:50, skipping insertion in model container [2018-11-07 03:00:50,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:00:50" (3/3) ... [2018-11-07 03:00:50,261 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label45_true-unreach-call.c [2018-11-07 03:00:50,273 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:00:50,283 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:00:50,300 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:00:50,341 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:00:50,342 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:00:50,342 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:00:50,342 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:00:50,342 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:00:50,342 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:00:50,343 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:00:50,343 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:00:50,374 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 03:00:50,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-07 03:00:50,382 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:00:50,384 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] [2018-11-07 03:00:50,386 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:00:50,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:00:50,393 INFO L82 PathProgramCache]: Analyzing trace with hash -23841615, now seen corresponding path program 1 times [2018-11-07 03:00:50,396 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:00:50,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:00:50,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:00:50,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:00:50,452 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:00:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:00:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:00:50,955 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:00:50,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:00:50,955 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:00:50,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:00:50,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:00:50,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:00:50,982 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 03:00:55,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:00:55,005 INFO L93 Difference]: Finished difference Result 979 states and 1754 transitions. [2018-11-07 03:00:55,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:00:55,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-11-07 03:00:55,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:00:55,029 INFO L225 Difference]: With dead ends: 979 [2018-11-07 03:00:55,030 INFO L226 Difference]: Without dead ends: 680 [2018-11-07 03:00:55,038 INFO L604 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 [2018-11-07 03:00:55,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2018-11-07 03:00:55,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 484. [2018-11-07 03:00:55,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2018-11-07 03:00:55,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 730 transitions. [2018-11-07 03:00:55,137 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 730 transitions. Word has length 39 [2018-11-07 03:00:55,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:00:55,137 INFO L480 AbstractCegarLoop]: Abstraction has 484 states and 730 transitions. [2018-11-07 03:00:55,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:00:55,138 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 730 transitions. [2018-11-07 03:00:55,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-11-07 03:00:55,144 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:00:55,144 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:00:55,145 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:00:55,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:00:55,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1487845251, now seen corresponding path program 1 times [2018-11-07 03:00:55,145 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:00:55,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:00:55,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:00:55,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:00:55,147 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:00:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:00:55,503 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:00:55,503 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:00:55,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:00:55,504 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:00:55,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:00:55,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:00:55,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:00:55,507 INFO L87 Difference]: Start difference. First operand 484 states and 730 transitions. Second operand 6 states. [2018-11-07 03:00:59,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:00:59,342 INFO L93 Difference]: Finished difference Result 1555 states and 2493 transitions. [2018-11-07 03:00:59,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:00:59,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-11-07 03:00:59,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:00:59,364 INFO L225 Difference]: With dead ends: 1555 [2018-11-07 03:00:59,365 INFO L226 Difference]: Without dead ends: 1077 [2018-11-07 03:00:59,368 INFO L604 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 [2018-11-07 03:00:59,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2018-11-07 03:00:59,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1063. [2018-11-07 03:00:59,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2018-11-07 03:00:59,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1592 transitions. [2018-11-07 03:00:59,430 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1592 transitions. Word has length 112 [2018-11-07 03:00:59,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:00:59,431 INFO L480 AbstractCegarLoop]: Abstraction has 1063 states and 1592 transitions. [2018-11-07 03:00:59,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:00:59,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1592 transitions. [2018-11-07 03:00:59,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-07 03:00:59,437 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:00:59,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:00:59,437 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:00:59,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:00:59,440 INFO L82 PathProgramCache]: Analyzing trace with hash 84082156, now seen corresponding path program 1 times [2018-11-07 03:00:59,440 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:00:59,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:00:59,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:00:59,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:00:59,442 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:00:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:00:59,671 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:00:59,671 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:00:59,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:00:59,671 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:00:59,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:00:59,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:00:59,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:00:59,673 INFO L87 Difference]: Start difference. First operand 1063 states and 1592 transitions. Second operand 4 states. [2018-11-07 03:01:02,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:01:02,562 INFO L93 Difference]: Finished difference Result 2907 states and 4465 transitions. [2018-11-07 03:01:02,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:01:02,573 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2018-11-07 03:01:02,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:01:02,591 INFO L225 Difference]: With dead ends: 2907 [2018-11-07 03:01:02,591 INFO L226 Difference]: Without dead ends: 1850 [2018-11-07 03:01:02,600 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:01:02,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2018-11-07 03:01:02,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1646. [2018-11-07 03:01:02,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1646 states. [2018-11-07 03:01:02,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2436 transitions. [2018-11-07 03:01:02,674 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2436 transitions. Word has length 113 [2018-11-07 03:01:02,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:01:02,675 INFO L480 AbstractCegarLoop]: Abstraction has 1646 states and 2436 transitions. [2018-11-07 03:01:02,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:01:02,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2436 transitions. [2018-11-07 03:01:02,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-07 03:01:02,693 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:01:02,694 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:01:02,694 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:01:02,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:01:02,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1266440719, now seen corresponding path program 1 times [2018-11-07 03:01:02,694 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:01:02,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:01:02,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:01:02,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:01:02,697 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:01:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:01:03,476 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:01:03,477 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:01:03,477 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:01:03,478 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 135 with the following transitions: [2018-11-07 03:01:03,480 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [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], [594], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 03:01:03,556 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:01:03,556 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:01:06,405 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:01:06,693 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:01:06,695 INFO L272 AbstractInterpreter]: Visited 99 different actions 99 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 03:01:06,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:01:06,705 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:01:08,581 INFO L227 lantSequenceWeakener]: Weakened 129 states. On average, predicates are now at 73.64% of their original sizes. [2018-11-07 03:01:08,581 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:01:09,012 INFO L415 sIntCurrentIteration]: We unified 133 AI predicates to 133 [2018-11-07 03:01:09,012 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:01:09,013 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:01:09,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-11-07 03:01:09,014 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:01:09,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 03:01:09,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 03:01:09,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 03:01:09,015 INFO L87 Difference]: Start difference. First operand 1646 states and 2436 transitions. Second operand 7 states. [2018-11-07 03:01:58,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:01:58,596 INFO L93 Difference]: Finished difference Result 3478 states and 5113 transitions. [2018-11-07 03:01:58,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:01:58,597 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2018-11-07 03:01:58,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:01:58,608 INFO L225 Difference]: With dead ends: 3478 [2018-11-07 03:01:58,608 INFO L226 Difference]: Without dead ends: 1838 [2018-11-07 03:01:58,614 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:01:58,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2018-11-07 03:01:58,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1836. [2018-11-07 03:01:58,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1836 states. [2018-11-07 03:01:58,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2636 transitions. [2018-11-07 03:01:58,672 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2636 transitions. Word has length 134 [2018-11-07 03:01:58,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:01:58,673 INFO L480 AbstractCegarLoop]: Abstraction has 1836 states and 2636 transitions. [2018-11-07 03:01:58,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 03:01:58,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2636 transitions. [2018-11-07 03:01:58,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-11-07 03:01:58,679 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:01:58,679 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:01:58,680 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:01:58,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:01:58,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1523785897, now seen corresponding path program 1 times [2018-11-07 03:01:58,680 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:01:58,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:01:58,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:01:58,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:01:58,682 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:01:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:01:59,110 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-07 03:01:59,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:01:59,111 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:01:59,111 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-11-07 03:01:59,111 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [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], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 03:01:59,118 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:01:59,118 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:02:00,974 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:02:17,167 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:02:17,167 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 03:02:17,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:02:17,179 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:02:20,777 INFO L227 lantSequenceWeakener]: Weakened 125 states. On average, predicates are now at 74.19% of their original sizes. [2018-11-07 03:02:20,778 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:02:34,944 INFO L415 sIntCurrentIteration]: We unified 250 AI predicates to 250 [2018-11-07 03:02:34,944 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:02:34,944 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:02:34,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [7] total 26 [2018-11-07 03:02:34,945 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:02:34,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 03:02:34,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 03:02:34,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2018-11-07 03:02:34,946 INFO L87 Difference]: Start difference. First operand 1836 states and 2636 transitions. Second operand 21 states. Received shutdown request... [2018-11-07 03:04:46,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 03:04:46,496 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:04:46,501 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:04:46,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:04:46 BoogieIcfgContainer [2018-11-07 03:04:46,502 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:04:46,503 INFO L168 Benchmark]: Toolchain (without parser) took 242711.96 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 566.8 MB. Max. memory is 7.1 GB. [2018-11-07 03:04:46,510 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-11-07 03:04:46,510 INFO L168 Benchmark]: CACSL2BoogieTranslator took 990.39 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-11-07 03:04:46,511 INFO L168 Benchmark]: Boogie Procedure Inliner took 214.29 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -850.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2018-11-07 03:04:46,512 INFO L168 Benchmark]: Boogie Preprocessor took 117.97 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:04:46,513 INFO L168 Benchmark]: RCFGBuilder took 5133.47 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: 179.2 MB). Peak memory consumption was 179.2 MB. Max. memory is 7.1 GB. [2018-11-07 03:04:46,514 INFO L168 Benchmark]: TraceAbstraction took 236248.83 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.5 GB in the end (delta: -1.5 GB). Peak memory consumption was 428.5 MB. Max. memory is 7.1 GB. [2018-11-07 03:04:46,520 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 990.39 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 214.29 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -850.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.97 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5133.47 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: 179.2 MB). Peak memory consumption was 179.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 236248.83 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.5 GB in the end (delta: -1.5 GB). Peak memory consumption was 428.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 102). Cancelled while BasicCegarLoop was constructing difference of abstraction (1836states) and FLOYD_HOARE automaton (currently 18 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (836 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 236.1s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 192.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1187 SDtfs, 3731 SDslu, 1139 SDs, 0 SdLazy, 6524 SolverSat, 1416 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 91.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 416 GetRequests, 368 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 22.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1836occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 21.2s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9951165264481194 AbsIntWeakeningRatio, 0.13054830287206268 AbsIntAvgWeakeningVarsNumRemoved, 560.0339425587467 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 416 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 649 NumberOfCodeBlocks, 649 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 644 ConstructedInterpolants, 0 QuantifiedInterpolants, 360092 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 156/255 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown