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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 02:03:02,905 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 02:03:02,910 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 02:03:02,932 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 02:03:02,932 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 02:03:02,933 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 02:03:02,936 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 02:03:02,938 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 02:03:02,943 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 02:03:02,943 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 02:03:02,946 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 02:03:02,946 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 02:03:02,947 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 02:03:02,948 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 02:03:02,951 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 02:03:02,952 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 02:03:02,953 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 02:03:02,955 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 02:03:02,957 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 02:03:02,959 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 02:03:02,960 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 02:03:02,961 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 02:03:02,964 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 02:03:02,973 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 02:03:02,998 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 02:03:02,999 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 02:03:03,000 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 02:03:03,001 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 02:03:03,001 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 02:03:03,001 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 02:03:03,001 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 02:03:03,001 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 02:03:03,002 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 02:03:03,002 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 02:03:03,002 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 02:03:03,002 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 02:03:03,002 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 02:03:03,003 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 02:03:03,004 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 02:03:03,004 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 02:03:03,004 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 02:03:03,004 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 02:03:03,004 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 02:03:03,006 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 02:03:03,007 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 02:03:03,007 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 02:03:03,007 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 02:03:03,007 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 02:03:03,007 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 02:03:03,008 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 02:03:03,008 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 02:03:03,008 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 02:03:03,009 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 02:03:03,009 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 02:03:03,009 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 02:03:03,009 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 02:03:03,009 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 02:03:03,009 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 02:03:03,010 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 02:03:03,010 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 02:03:03,067 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 02:03:03,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 02:03:03,083 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 02:03:03,085 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 02:03:03,085 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 02:03:03,086 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label59_true-unreach-call.c [2018-10-25 02:03:03,144 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/282a3e11e/be0758a89c44449e81d23f2d40b9af38/FLAGcf3a0a488 [2018-10-25 02:03:03,916 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 02:03:03,918 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label59_true-unreach-call.c [2018-10-25 02:03:03,940 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/282a3e11e/be0758a89c44449e81d23f2d40b9af38/FLAGcf3a0a488 [2018-10-25 02:03:03,956 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/282a3e11e/be0758a89c44449e81d23f2d40b9af38 [2018-10-25 02:03:03,968 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 02:03:03,970 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 02:03:03,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 02:03:03,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 02:03:03,975 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 02:03:03,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:03:03" (1/1) ... [2018-10-25 02:03:03,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4621111d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:03:03, skipping insertion in model container [2018-10-25 02:03:03,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:03:03" (1/1) ... [2018-10-25 02:03:03,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 02:03:04,124 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 02:03:05,049 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:03:05,055 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 02:03:05,470 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:03:05,496 INFO L193 MainTranslator]: Completed translation [2018-10-25 02:03:05,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:03:05 WrapperNode [2018-10-25 02:03:05,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 02:03:05,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 02:03:05,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 02:03:05,500 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 02:03:05,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:03:05" (1/1) ... [2018-10-25 02:03:05,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:03:05" (1/1) ... [2018-10-25 02:03:06,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 02:03:06,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 02:03:06,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 02:03:06,046 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 02:03:06,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:03:05" (1/1) ... [2018-10-25 02:03:06,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:03:05" (1/1) ... [2018-10-25 02:03:06,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:03:05" (1/1) ... [2018-10-25 02:03:06,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:03:05" (1/1) ... [2018-10-25 02:03:06,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:03:05" (1/1) ... [2018-10-25 02:03:06,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:03:05" (1/1) ... [2018-10-25 02:03:06,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:03:05" (1/1) ... [2018-10-25 02:03:06,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 02:03:06,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 02:03:06,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 02:03:06,294 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 02:03:06,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:03:05" (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 [2018-10-25 02:03:06,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 02:03:06,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 02:03:06,367 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 02:03:06,367 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 02:03:06,367 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 02:03:06,367 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 02:03:06,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 02:03:06,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 02:03:06,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 02:03:06,368 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 02:03:19,637 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 02:03:19,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:03:19 BoogieIcfgContainer [2018-10-25 02:03:19,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 02:03:19,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 02:03:19,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 02:03:19,644 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 02:03:19,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 02:03:03" (1/3) ... [2018-10-25 02:03:19,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230e247b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:03:19, skipping insertion in model container [2018-10-25 02:03:19,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:03:05" (2/3) ... [2018-10-25 02:03:19,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230e247b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:03:19, skipping insertion in model container [2018-10-25 02:03:19,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:03:19" (3/3) ... [2018-10-25 02:03:19,648 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label59_true-unreach-call.c [2018-10-25 02:03:19,658 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 02:03:19,668 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 02:03:19,687 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 02:03:19,731 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 02:03:19,731 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 02:03:19,731 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 02:03:19,731 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 02:03:19,732 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 02:03:19,732 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 02:03:19,732 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 02:03:19,732 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 02:03:19,771 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-25 02:03:19,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-25 02:03:19,783 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:03:19,784 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] [2018-10-25 02:03:19,786 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:03:19,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:03:19,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1188687990, now seen corresponding path program 1 times [2018-10-25 02:03:19,795 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:03:19,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:03:19,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:03:19,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:03:19,850 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:03:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:03:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:03:20,295 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:03:20,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 02:03:20,295 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:03:20,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 02:03:20,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 02:03:20,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:03:20,320 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-25 02:03:31,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:03:31,926 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-10-25 02:03:31,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 02:03:31,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-10-25 02:03:31,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:03:31,970 INFO L225 Difference]: With dead ends: 2164 [2018-10-25 02:03:31,970 INFO L226 Difference]: Without dead ends: 1554 [2018-10-25 02:03:31,987 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:03:32,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-10-25 02:03:32,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-10-25 02:03:32,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-10-25 02:03:32,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-10-25 02:03:32,159 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 39 [2018-10-25 02:03:32,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:03:32,160 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-10-25 02:03:32,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 02:03:32,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-10-25 02:03:32,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-25 02:03:32,169 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:03:32,169 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] [2018-10-25 02:03:32,173 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:03:32,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:03:32,174 INFO L82 PathProgramCache]: Analyzing trace with hash 2141434535, now seen corresponding path program 1 times [2018-10-25 02:03:32,174 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:03:32,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:03:32,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:03:32,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:03:32,177 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:03:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:03:32,518 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:03:32,601 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:03:32,601 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:03:32,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 02:03:32,601 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:03:32,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 02:03:32,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 02:03:32,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 02:03:32,606 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-10-25 02:03:41,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:03:41,914 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-10-25 02:03:41,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 02:03:41,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2018-10-25 02:03:41,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:03:41,934 INFO L225 Difference]: With dead ends: 3031 [2018-10-25 02:03:41,934 INFO L226 Difference]: Without dead ends: 1985 [2018-10-25 02:03:41,939 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 02:03:41,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-10-25 02:03:42,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-10-25 02:03:42,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-10-25 02:03:42,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-10-25 02:03:42,022 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 111 [2018-10-25 02:03:42,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:03:42,023 INFO L481 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-10-25 02:03:42,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 02:03:42,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-10-25 02:03:42,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-25 02:03:42,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:03:42,037 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] [2018-10-25 02:03:42,041 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:03:42,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:03:42,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1471325761, now seen corresponding path program 1 times [2018-10-25 02:03:42,041 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:03:42,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:03:42,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:03:42,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:03:42,045 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:03:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:03:42,500 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:03:42,500 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:03:42,500 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:03:42,502 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 115 with the following transitions: [2018-10-25 02:03:42,504 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:03:42,578 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:03:42,579 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:03:44,168 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:03:44,170 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 02:03:44,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:03:44,200 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:03:44,200 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:03:44,200 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:03:44,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:03:44,218 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:03:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:03:44,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:03:44,772 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-10-25 02:03:44,934 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:03:44,934 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:03:45,888 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2018-10-25 02:03:46,319 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:03:46,351 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 02:03:46,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-10-25 02:03:46,351 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:03:46,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:03:46,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:03:46,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-10-25 02:03:46,354 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 6 states. [2018-10-25 02:04:01,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:04:01,239 INFO L93 Difference]: Finished difference Result 7518 states and 12893 transitions. [2018-10-25 02:04:01,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 02:04:01,240 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-10-25 02:04:01,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:04:01,280 INFO L225 Difference]: With dead ends: 7518 [2018-10-25 02:04:01,281 INFO L226 Difference]: Without dead ends: 5565 [2018-10-25 02:04:01,297 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 223 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-10-25 02:04:01,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5565 states. [2018-10-25 02:04:01,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5565 to 5555. [2018-10-25 02:04:01,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5555 states. [2018-10-25 02:04:01,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5555 states to 5555 states and 9340 transitions. [2018-10-25 02:04:01,487 INFO L78 Accepts]: Start accepts. Automaton has 5555 states and 9340 transitions. Word has length 114 [2018-10-25 02:04:01,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:04:01,490 INFO L481 AbstractCegarLoop]: Abstraction has 5555 states and 9340 transitions. [2018-10-25 02:04:01,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:04:01,490 INFO L276 IsEmpty]: Start isEmpty. Operand 5555 states and 9340 transitions. [2018-10-25 02:04:01,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-25 02:04:01,495 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:04:01,495 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] [2018-10-25 02:04:01,495 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:04:01,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:04:01,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1996985273, now seen corresponding path program 1 times [2018-10-25 02:04:01,497 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:04:01,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:04:01,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:04:01,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:04:01,499 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:04:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:04:01,854 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:04:01,854 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:04:01,855 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:04:01,855 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 128 with the following transitions: [2018-10-25 02:04:01,855 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:04:01,861 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:04:01,861 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:04:02,360 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:04:02,360 INFO L272 AbstractInterpreter]: Visited 96 different actions 185 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 02:04:02,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:04:02,398 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:04:02,398 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:04:02,398 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:04:02,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:04:02,413 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:04:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:04:02,486 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:04:02,646 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:04:02,647 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:04:02,815 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:04:02,836 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 02:04:02,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-25 02:04:02,836 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:04:02,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:04:02,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:04:02,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-25 02:04:02,838 INFO L87 Difference]: Start difference. First operand 5555 states and 9340 transitions. Second operand 3 states. [2018-10-25 02:04:08,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:04:08,291 INFO L93 Difference]: Finished difference Result 13726 states and 22953 transitions. [2018-10-25 02:04:08,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:04:08,292 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2018-10-25 02:04:08,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:04:08,333 INFO L225 Difference]: With dead ends: 13726 [2018-10-25 02:04:08,333 INFO L226 Difference]: Without dead ends: 8177 [2018-10-25 02:04:08,367 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 253 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-25 02:04:08,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8177 states. [2018-10-25 02:04:08,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8177 to 8176. [2018-10-25 02:04:08,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8176 states. [2018-10-25 02:04:08,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8176 states to 8176 states and 12764 transitions. [2018-10-25 02:04:08,579 INFO L78 Accepts]: Start accepts. Automaton has 8176 states and 12764 transitions. Word has length 127 [2018-10-25 02:04:08,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:04:08,580 INFO L481 AbstractCegarLoop]: Abstraction has 8176 states and 12764 transitions. [2018-10-25 02:04:08,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:04:08,580 INFO L276 IsEmpty]: Start isEmpty. Operand 8176 states and 12764 transitions. [2018-10-25 02:04:08,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-25 02:04:08,589 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:04:08,590 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:04:08,590 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:04:08,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:04:08,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1686408890, now seen corresponding path program 1 times [2018-10-25 02:04:08,590 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:04:08,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:04:08,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:04:08,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:04:08,592 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:04:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:04:08,925 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:04:09,112 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 65 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-25 02:04:09,113 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:04:09,113 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:04:09,113 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-10-25 02:04:09,114 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1329], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:04:09,119 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:04:09,119 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:04:10,463 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:04:10,463 INFO L272 AbstractInterpreter]: Visited 107 different actions 307 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 02:04:10,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:04:10,498 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:04:10,498 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:04:10,498 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:04:10,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:04:10,511 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:04:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:04:10,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:04:11,024 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:04:11,024 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:04:11,608 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:04:11,633 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 02:04:11,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-25 02:04:11,633 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 02:04:11,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 02:04:11,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 02:04:11,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-25 02:04:11,635 INFO L87 Difference]: Start difference. First operand 8176 states and 12764 transitions. Second operand 9 states. [2018-10-25 02:04:22,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:04:22,249 INFO L93 Difference]: Finished difference Result 16444 states and 25911 transitions. [2018-10-25 02:04:22,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 02:04:22,256 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 212 [2018-10-25 02:04:22,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:04:22,297 INFO L225 Difference]: With dead ends: 16444 [2018-10-25 02:04:22,297 INFO L226 Difference]: Without dead ends: 7304 [2018-10-25 02:04:22,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 422 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-10-25 02:04:22,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7304 states. [2018-10-25 02:04:22,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7304 to 7281. [2018-10-25 02:04:22,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7281 states. [2018-10-25 02:04:22,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7281 states to 7281 states and 8864 transitions. [2018-10-25 02:04:22,489 INFO L78 Accepts]: Start accepts. Automaton has 7281 states and 8864 transitions. Word has length 212 [2018-10-25 02:04:22,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:04:22,489 INFO L481 AbstractCegarLoop]: Abstraction has 7281 states and 8864 transitions. [2018-10-25 02:04:22,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 02:04:22,489 INFO L276 IsEmpty]: Start isEmpty. Operand 7281 states and 8864 transitions. [2018-10-25 02:04:22,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-25 02:04:22,495 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:04:22,496 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:04:22,496 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:04:22,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:04:22,497 INFO L82 PathProgramCache]: Analyzing trace with hash 133092229, now seen corresponding path program 1 times [2018-10-25 02:04:22,497 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:04:22,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:04:22,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:04:22,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:04:22,499 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:04:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:04:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-25 02:04:23,053 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:04:23,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 02:04:23,054 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:04:23,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 02:04:23,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 02:04:23,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:04:23,055 INFO L87 Difference]: Start difference. First operand 7281 states and 8864 transitions. Second operand 4 states. [2018-10-25 02:04:29,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:04:29,114 INFO L93 Difference]: Finished difference Result 25573 states and 31722 transitions. [2018-10-25 02:04:29,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 02:04:29,115 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 293 [2018-10-25 02:04:29,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:04:29,173 INFO L225 Difference]: With dead ends: 25573 [2018-10-25 02:04:29,173 INFO L226 Difference]: Without dead ends: 14722 [2018-10-25 02:04:29,201 INFO L605 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 [2018-10-25 02:04:29,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14722 states. [2018-10-25 02:04:29,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14722 to 14716. [2018-10-25 02:04:29,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14716 states. [2018-10-25 02:04:29,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14716 states to 14716 states and 17345 transitions. [2018-10-25 02:04:29,476 INFO L78 Accepts]: Start accepts. Automaton has 14716 states and 17345 transitions. Word has length 293 [2018-10-25 02:04:29,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:04:29,477 INFO L481 AbstractCegarLoop]: Abstraction has 14716 states and 17345 transitions. [2018-10-25 02:04:29,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 02:04:29,477 INFO L276 IsEmpty]: Start isEmpty. Operand 14716 states and 17345 transitions. [2018-10-25 02:04:29,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-10-25 02:04:29,491 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:04:29,492 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:04:29,492 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:04:29,492 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:04:29,493 INFO L82 PathProgramCache]: Analyzing trace with hash 197834602, now seen corresponding path program 1 times [2018-10-25 02:04:29,493 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:04:29,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:04:29,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:04:29,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:04:29,494 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:04:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:04:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:04:29,995 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:04:29,995 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:04:29,996 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 388 with the following transitions: [2018-10-25 02:04:29,996 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [273], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:04:30,007 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:04:30,008 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:04:31,217 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:04:31,217 INFO L272 AbstractInterpreter]: Visited 356 different actions 1054 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 02:04:31,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:04:31,259 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:04:31,260 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:04:31,260 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:04:31,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:04:31,612 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:04:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:04:31,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:04:32,072 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:04:32,072 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:04:32,862 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:04:32,883 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 02:04:32,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-10-25 02:04:32,884 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:04:32,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:04:32,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:04:32,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-10-25 02:04:32,885 INFO L87 Difference]: Start difference. First operand 14716 states and 17345 transitions. Second operand 6 states. [2018-10-25 02:04:43,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:04:43,008 INFO L93 Difference]: Finished difference Result 32497 states and 38341 transitions. [2018-10-25 02:04:43,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 02:04:43,009 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 387 [2018-10-25 02:04:43,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:04:43,058 INFO L225 Difference]: With dead ends: 32497 [2018-10-25 02:04:43,058 INFO L226 Difference]: Without dead ends: 17353 [2018-10-25 02:04:43,078 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 773 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-10-25 02:04:43,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17353 states. [2018-10-25 02:04:43,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17353 to 16477. [2018-10-25 02:04:43,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16477 states. [2018-10-25 02:04:43,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16477 states to 16477 states and 19515 transitions. [2018-10-25 02:04:43,383 INFO L78 Accepts]: Start accepts. Automaton has 16477 states and 19515 transitions. Word has length 387 [2018-10-25 02:04:43,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:04:43,385 INFO L481 AbstractCegarLoop]: Abstraction has 16477 states and 19515 transitions. [2018-10-25 02:04:43,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:04:43,385 INFO L276 IsEmpty]: Start isEmpty. Operand 16477 states and 19515 transitions. [2018-10-25 02:04:43,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2018-10-25 02:04:43,416 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:04:43,417 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 02:04:43,417 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:04:43,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:04:43,417 INFO L82 PathProgramCache]: Analyzing trace with hash -361053273, now seen corresponding path program 1 times [2018-10-25 02:04:43,417 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:04:43,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:04:43,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:04:43,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:04:43,420 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:04:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:04:44,263 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2018-10-25 02:04:44,263 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:04:44,264 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:04:44,264 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 576 with the following transitions: [2018-10-25 02:04:44,264 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1670], [1673], [1677], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1861], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:04:44,273 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:04:44,274 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:04:45,385 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:04:45,386 INFO L272 AbstractInterpreter]: Visited 216 different actions 661 times. Merged at 9 different actions 38 times. Widened at 1 different actions 4 times. Found 7 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 02:04:45,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:04:45,433 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:04:45,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:04:45,434 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:04:45,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:04:45,449 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:04:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:04:45,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:04:45,845 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 430 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-25 02:04:45,845 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:04:46,331 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2018-10-25 02:04:46,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 02:04:46,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-10-25 02:04:46,353 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:04:46,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:04:46,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:04:46,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:04:46,354 INFO L87 Difference]: Start difference. First operand 16477 states and 19515 transitions. Second operand 3 states. [2018-10-25 02:04:52,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:04:52,344 INFO L93 Difference]: Finished difference Result 44346 states and 53477 transitions. [2018-10-25 02:04:52,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:04:52,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 575 [2018-10-25 02:04:52,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:04:52,416 INFO L225 Difference]: With dead ends: 44346 [2018-10-25 02:04:52,416 INFO L226 Difference]: Without dead ends: 27875 [2018-10-25 02:04:52,441 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1152 GetRequests, 1150 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:04:52,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27875 states. [2018-10-25 02:04:52,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27875 to 27856. [2018-10-25 02:04:52,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27856 states. [2018-10-25 02:04:52,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27856 states to 27856 states and 33149 transitions. [2018-10-25 02:04:52,924 INFO L78 Accepts]: Start accepts. Automaton has 27856 states and 33149 transitions. Word has length 575 [2018-10-25 02:04:52,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:04:52,925 INFO L481 AbstractCegarLoop]: Abstraction has 27856 states and 33149 transitions. [2018-10-25 02:04:52,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:04:52,925 INFO L276 IsEmpty]: Start isEmpty. Operand 27856 states and 33149 transitions. [2018-10-25 02:04:52,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2018-10-25 02:04:52,983 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:04:52,983 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:04:52,984 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:04:52,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:04:52,984 INFO L82 PathProgramCache]: Analyzing trace with hash 905567621, now seen corresponding path program 1 times [2018-10-25 02:04:52,984 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:04:52,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:04:52,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:04:52,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:04:52,986 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:04:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:04:53,828 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 342 proven. 114 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2018-10-25 02:04:53,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:04:53,828 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:04:53,829 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 654 with the following transitions: [2018-10-25 02:04:53,829 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1404], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1810], [1815], [1817], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1917], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:04:53,834 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:04:53,834 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:04:58,796 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:04:58,796 INFO L272 AbstractInterpreter]: Visited 230 different actions 697 times. Merged at 9 different actions 32 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 4 different actions. Largest state had 26 variables. [2018-10-25 02:04:58,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:04:58,827 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:04:58,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:04:58,828 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:04:58,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:04:58,835 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:04:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:04:59,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:04:59,280 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 694 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-10-25 02:04:59,280 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:04:59,726 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 342 proven. 114 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2018-10-25 02:04:59,749 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 02:04:59,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-10-25 02:04:59,749 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 02:04:59,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-25 02:04:59,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-25 02:04:59,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-25 02:04:59,751 INFO L87 Difference]: Start difference. First operand 27856 states and 33149 transitions. Second operand 7 states. [2018-10-25 02:05:10,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:05:10,466 INFO L93 Difference]: Finished difference Result 63943 states and 78335 transitions. [2018-10-25 02:05:10,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-25 02:05:10,474 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 653 [2018-10-25 02:05:10,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:05:10,803 INFO L225 Difference]: With dead ends: 63943 [2018-10-25 02:05:10,803 INFO L226 Difference]: Without dead ends: 36527 [2018-10-25 02:05:10,831 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1321 GetRequests, 1307 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-10-25 02:05:10,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36527 states. [2018-10-25 02:05:11,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36527 to 35097. [2018-10-25 02:05:11,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35097 states. [2018-10-25 02:05:11,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35097 states to 35097 states and 42177 transitions. [2018-10-25 02:05:11,408 INFO L78 Accepts]: Start accepts. Automaton has 35097 states and 42177 transitions. Word has length 653 [2018-10-25 02:05:11,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:05:11,408 INFO L481 AbstractCegarLoop]: Abstraction has 35097 states and 42177 transitions. [2018-10-25 02:05:11,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-25 02:05:11,409 INFO L276 IsEmpty]: Start isEmpty. Operand 35097 states and 42177 transitions. [2018-10-25 02:05:11,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2018-10-25 02:05:11,482 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:05:11,483 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:05:11,483 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:05:11,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:05:11,483 INFO L82 PathProgramCache]: Analyzing trace with hash -176426799, now seen corresponding path program 1 times [2018-10-25 02:05:11,484 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:05:11,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:05:11,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:05:11,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:05:11,485 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:05:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:05:12,222 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2018-10-25 02:05:12,223 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:05:12,223 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:05:12,223 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 721 with the following transitions: [2018-10-25 02:05:12,224 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [297], [301], [305], [309], [313], [317], [321], [325], [336], [340], [344], [348], [352], [363], [367], [371], [375], [379], [383], [387], [391], [395], [399], [403], [407], [411], [415], [426], [430], [434], [445], [449], [453], [464], [475], [479], [483], [487], [491], [495], [499], [503], [507], [511], [515], [519], [530], [534], [538], [549], [553], [557], [561], [565], [569], [573], [584], [587], [590], [594], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1266], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1329], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:05:12,233 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:05:12,233 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:05:13,306 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:05:13,306 INFO L272 AbstractInterpreter]: Visited 418 different actions 836 times. Merged at 8 different actions 13 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 02:05:13,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:05:13,344 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:05:13,344 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:05:13,344 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:05:13,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:05:13,354 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:05:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:05:13,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:05:14,242 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 535 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-10-25 02:05:14,242 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:05:14,561 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 150 proven. 8 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-10-25 02:05:14,582 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 02:05:14,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2018-10-25 02:05:14,583 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:05:14,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:05:14,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:05:14,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:05:14,584 INFO L87 Difference]: Start difference. First operand 35097 states and 42177 transitions. Second operand 3 states. [2018-10-25 02:05:16,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:05:16,654 INFO L93 Difference]: Finished difference Result 66203 states and 79726 transitions. [2018-10-25 02:05:16,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:05:16,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 720 [2018-10-25 02:05:16,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:05:16,734 INFO L225 Difference]: With dead ends: 66203 [2018-10-25 02:05:16,734 INFO L226 Difference]: Without dead ends: 31545 [2018-10-25 02:05:16,776 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1443 GetRequests, 1435 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:05:16,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31545 states. [2018-10-25 02:05:17,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31545 to 31107. [2018-10-25 02:05:17,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31107 states. [2018-10-25 02:05:17,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31107 states to 31107 states and 37365 transitions. [2018-10-25 02:05:17,306 INFO L78 Accepts]: Start accepts. Automaton has 31107 states and 37365 transitions. Word has length 720 [2018-10-25 02:05:17,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:05:17,308 INFO L481 AbstractCegarLoop]: Abstraction has 31107 states and 37365 transitions. [2018-10-25 02:05:17,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:05:17,308 INFO L276 IsEmpty]: Start isEmpty. Operand 31107 states and 37365 transitions. [2018-10-25 02:05:17,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2018-10-25 02:05:17,355 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:05:17,356 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:05:17,356 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:05:17,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:05:17,357 INFO L82 PathProgramCache]: Analyzing trace with hash 2080661305, now seen corresponding path program 1 times [2018-10-25 02:05:17,357 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:05:17,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:05:17,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:05:17,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:05:17,361 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:05:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:05:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 143 proven. 326 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-10-25 02:05:18,468 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:05:18,468 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:05:18,468 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 729 with the following transitions: [2018-10-25 02:05:18,469 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [95], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1266], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1861], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:05:18,474 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:05:18,475 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:05:19,954 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:05:19,954 INFO L272 AbstractInterpreter]: Visited 325 different actions 983 times. Merged at 9 different actions 34 times. Widened at 1 different actions 2 times. Found 7 fixpoints after 4 different actions. Largest state had 26 variables. [2018-10-25 02:05:19,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:05:19,962 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:05:19,962 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:05:19,962 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:05:19,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:05:19,970 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:05:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:05:20,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:05:20,604 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-10-25 02:05:21,223 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 411 proven. 2 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2018-10-25 02:05:21,223 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:05:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 143 proven. 403 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-10-25 02:05:22,457 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 02:05:22,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 14 [2018-10-25 02:05:22,458 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 02:05:22,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 02:05:22,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 02:05:22,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-10-25 02:05:22,460 INFO L87 Difference]: Start difference. First operand 31107 states and 37365 transitions. Second operand 9 states. [2018-10-25 02:05:32,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:05:32,988 INFO L93 Difference]: Finished difference Result 72161 states and 88186 transitions. [2018-10-25 02:05:32,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-25 02:05:32,989 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 728 [2018-10-25 02:05:32,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:05:33,113 INFO L225 Difference]: With dead ends: 72161 [2018-10-25 02:05:33,113 INFO L226 Difference]: Without dead ends: 41494 [2018-10-25 02:05:33,158 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1485 GetRequests, 1460 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=182, Invalid=418, Unknown=0, NotChecked=0, Total=600 [2018-10-25 02:05:33,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41494 states. [2018-10-25 02:05:33,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41494 to 39442. [2018-10-25 02:05:33,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39442 states. [2018-10-25 02:05:33,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39442 states to 39442 states and 46668 transitions. [2018-10-25 02:05:33,848 INFO L78 Accepts]: Start accepts. Automaton has 39442 states and 46668 transitions. Word has length 728 [2018-10-25 02:05:33,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:05:33,849 INFO L481 AbstractCegarLoop]: Abstraction has 39442 states and 46668 transitions. [2018-10-25 02:05:33,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 02:05:33,849 INFO L276 IsEmpty]: Start isEmpty. Operand 39442 states and 46668 transitions. [2018-10-25 02:05:33,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2018-10-25 02:05:33,891 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:05:33,892 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:05:33,892 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:05:33,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:05:33,892 INFO L82 PathProgramCache]: Analyzing trace with hash 175578229, now seen corresponding path program 1 times [2018-10-25 02:05:33,893 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:05:33,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:05:33,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:05:33,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:05:33,894 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:05:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:05:35,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 182 proven. 615 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2018-10-25 02:05:35,584 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:05:35,584 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:05:35,585 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 839 with the following transitions: [2018-10-25 02:05:35,585 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [95], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1266], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1861], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:05:35,590 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:05:35,590 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:05:36,349 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:05:36,350 INFO L272 AbstractInterpreter]: Visited 326 different actions 654 times. Merged at 10 different actions 17 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 02:05:36,359 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:05:36,359 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:05:36,359 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:05:36,359 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:05:36,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:05:36,369 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:05:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:05:36,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:05:38,764 WARN L179 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 48 DAG size of output: 21 [2018-10-25 02:05:39,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 711 proven. 2 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2018-10-25 02:05:39,221 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:05:39,555 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2018-10-25 02:05:40,006 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 02:05:40,042 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 18 [2018-10-25 02:05:40,567 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 24 [2018-10-25 02:05:41,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 176 proven. 621 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2018-10-25 02:05:41,977 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 02:05:41,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2018-10-25 02:05:41,978 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 02:05:41,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-25 02:05:41,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-25 02:05:41,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2018-10-25 02:05:41,980 INFO L87 Difference]: Start difference. First operand 39442 states and 46668 transitions. Second operand 15 states. [2018-10-25 02:06:04,783 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2018-10-25 02:06:06,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:06:06,220 INFO L93 Difference]: Finished difference Result 85390 states and 102788 transitions. [2018-10-25 02:06:06,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-25 02:06:06,221 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 838 [2018-10-25 02:06:06,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:06:06,323 INFO L225 Difference]: With dead ends: 85390 [2018-10-25 02:06:06,324 INFO L226 Difference]: Without dead ends: 46395 [2018-10-25 02:06:06,365 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1751 GetRequests, 1695 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=640, Invalid=2330, Unknown=0, NotChecked=0, Total=2970 [2018-10-25 02:06:06,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46395 states. [2018-10-25 02:06:07,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46395 to 44265. [2018-10-25 02:06:07,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44265 states. [2018-10-25 02:06:07,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44265 states to 44265 states and 51986 transitions. [2018-10-25 02:06:07,158 INFO L78 Accepts]: Start accepts. Automaton has 44265 states and 51986 transitions. Word has length 838 [2018-10-25 02:06:07,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:06:07,159 INFO L481 AbstractCegarLoop]: Abstraction has 44265 states and 51986 transitions. [2018-10-25 02:06:07,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-25 02:06:07,159 INFO L276 IsEmpty]: Start isEmpty. Operand 44265 states and 51986 transitions. [2018-10-25 02:06:07,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 859 [2018-10-25 02:06:07,203 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:06:07,203 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:06:07,204 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:06:07,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:06:07,204 INFO L82 PathProgramCache]: Analyzing trace with hash -215889203, now seen corresponding path program 1 times [2018-10-25 02:06:07,204 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:06:07,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:06:07,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:06:07,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:06:07,205 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:06:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:06:09,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 178 proven. 659 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2018-10-25 02:06:09,716 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:06:09,716 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:06:09,716 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 859 with the following transitions: [2018-10-25 02:06:09,717 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [95], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1266], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1478], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1861], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:06:09,722 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:06:09,722 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:06:11,044 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:06:11,044 INFO L272 AbstractInterpreter]: Visited 326 different actions 992 times. Merged at 10 different actions 40 times. Widened at 1 different actions 3 times. Found 9 fixpoints after 4 different actions. Largest state had 26 variables. [2018-10-25 02:06:11,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:06:11,076 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:06:11,076 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:06:11,076 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:06:11,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:06:11,085 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:06:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:06:11,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:06:12,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 672 proven. 2 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2018-10-25 02:06:12,199 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:06:12,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 672 proven. 2 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2018-10-25 02:06:12,862 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 02:06:12,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-10-25 02:06:12,862 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 02:06:12,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-25 02:06:12,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-25 02:06:12,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2018-10-25 02:06:12,864 INFO L87 Difference]: Start difference. First operand 44265 states and 51986 transitions. Second operand 17 states. [2018-10-25 02:06:16,027 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2018-10-25 02:06:17,432 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2018-10-25 02:06:18,152 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2018-10-25 02:06:19,362 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2018-10-25 02:06:20,263 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-25 02:06:24,125 WARN L179 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2018-10-25 02:06:24,956 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2018-10-25 02:06:42,344 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2018-10-25 02:06:45,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:06:45,029 INFO L93 Difference]: Finished difference Result 96217 states and 114801 transitions. [2018-10-25 02:06:45,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-25 02:06:45,030 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 858 [2018-10-25 02:06:45,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:06:45,139 INFO L225 Difference]: With dead ends: 96217 [2018-10-25 02:06:45,139 INFO L226 Difference]: Without dead ends: 52832 [2018-10-25 02:06:45,181 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1801 GetRequests, 1742 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=660, Invalid=2762, Unknown=0, NotChecked=0, Total=3422 [2018-10-25 02:06:45,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52832 states. [2018-10-25 02:06:45,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52832 to 51455. [2018-10-25 02:06:45,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51455 states. [2018-10-25 02:06:46,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51455 states to 51455 states and 60726 transitions. [2018-10-25 02:06:46,008 INFO L78 Accepts]: Start accepts. Automaton has 51455 states and 60726 transitions. Word has length 858 [2018-10-25 02:06:46,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:06:46,009 INFO L481 AbstractCegarLoop]: Abstraction has 51455 states and 60726 transitions. [2018-10-25 02:06:46,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-25 02:06:46,009 INFO L276 IsEmpty]: Start isEmpty. Operand 51455 states and 60726 transitions. [2018-10-25 02:06:46,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 930 [2018-10-25 02:06:46,063 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:06:46,064 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:06:46,064 INFO L424 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:06:46,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:06:46,065 INFO L82 PathProgramCache]: Analyzing trace with hash -645295429, now seen corresponding path program 1 times [2018-10-25 02:06:46,065 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:06:46,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:06:46,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:06:46,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:06:46,066 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:06:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:06:47,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 926 proven. 6 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2018-10-25 02:06:47,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:06:47,526 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:06:47,526 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 930 with the following transitions: [2018-10-25 02:06:47,527 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [153], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [922], [924], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1376], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1861], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:06:47,532 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:06:47,532 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-25 02:06:48,022 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-25 02:06:48,023 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-25 02:06:48,023 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-25 02:06:48,023 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:06:48,023 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:06:48,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:06:48,038 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:06:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:06:48,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:06:48,300 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-25 02:06:48,501 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:06:48,502 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 02:06:48,508 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 02:06:48,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 02:06:48 BoogieIcfgContainer [2018-10-25 02:06:48,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 02:06:48,509 INFO L168 Benchmark]: Toolchain (without parser) took 224540.88 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 868.1 MB. Max. memory is 7.1 GB. [2018-10-25 02:06:48,510 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. [2018-10-25 02:06:48,511 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1527.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-25 02:06:48,513 INFO L168 Benchmark]: Boogie Procedure Inliner took 545.85 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -946.5 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-10-25 02:06:48,513 INFO L168 Benchmark]: Boogie Preprocessor took 247.71 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: 43.8 MB). Peak memory consumption was 43.8 MB. Max. memory is 7.1 GB. [2018-10-25 02:06:48,514 INFO L168 Benchmark]: RCFGBuilder took 13345.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 453.4 MB). Peak memory consumption was 453.4 MB. Max. memory is 7.1 GB. [2018-10-25 02:06:48,516 INFO L168 Benchmark]: TraceAbstraction took 208868.45 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 383.0 MB. Max. memory is 7.1 GB. [2018-10-25 02:06:48,521 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 1527.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 545.85 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -946.5 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 247.71 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: 43.8 MB). Peak memory consumption was 43.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13345.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 453.4 MB). Peak memory consumption was 453.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208868.45 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 383.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 104). Cancelled while BasicCegarLoop was analyzing trace of length 930 with TraceHistMax 7,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 208.7s OverallTime, 14 OverallIterations, 7 TraceHistogramMax, 155.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3131 SDtfs, 29504 SDslu, 3135 SDs, 0 SdLazy, 40822 SolverSat, 10509 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 134.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10697 GetRequests, 10469 SyntacticMatches, 25 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1926 ImplicationChecksByTransitivity, 14.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51455occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 16.3s AbstIntTime, 11 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 8890 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 22.1s InterpolantComputationTime, 10867 NumberOfCodeBlocks, 10867 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 16046 ConstructedInterpolants, 281 QuantifiedInterpolants, 33575782 SizeOfPredicates, 18 NumberOfNonLiveVariables, 7690 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 33 InterpolantComputations, 9 PerfectInterpolantSequences, 13894/16903 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown