java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label38_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:15:39,954 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:15:39,957 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:15:39,975 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:15:39,975 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:15:39,977 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:15:39,979 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:15:39,983 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:15:39,986 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:15:39,987 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:15:39,991 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:15:39,991 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:15:39,992 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:15:39,993 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:15:40,002 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:15:40,003 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:15:40,004 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:15:40,006 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:15:40,010 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:15:40,012 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:15:40,013 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:15:40,015 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:15:40,021 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:15:40,021 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:15:40,021 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:15:40,022 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:15:40,023 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:15:40,025 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:15:40,026 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:15:40,027 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:15:40,027 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:15:40,028 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:15:40,028 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:15:40,028 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:15:40,031 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:15:40,033 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:15:40,033 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 18:15:40,061 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:15:40,061 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:15:40,062 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:15:40,062 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:15:40,062 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:15:40,062 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:15:40,062 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:15:40,063 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:15:40,063 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:15:40,064 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:15:40,064 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:15:40,064 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:15:40,064 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:15:40,065 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:15:40,065 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:15:40,065 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:15:40,065 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:15:40,067 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:15:40,067 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:15:40,068 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:15:40,068 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:15:40,068 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:15:40,068 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:15:40,068 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:15:40,069 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:15:40,069 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:15:40,069 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:15:40,069 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:15:40,070 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:15:40,070 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:15:40,070 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:15:40,070 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:15:40,070 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:15:40,071 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:15:40,071 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:15:40,129 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:15:40,142 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:15:40,147 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:15:40,149 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:15:40,150 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:15:40,151 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label38_false-unreach-call.c [2018-11-07 18:15:40,226 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ceb0a946/6309ff8b4e3f4d9cb57e643644aee33a/FLAG61c5e3d33 [2018-11-07 18:15:40,876 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:15:40,877 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label38_false-unreach-call.c [2018-11-07 18:15:40,903 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ceb0a946/6309ff8b4e3f4d9cb57e643644aee33a/FLAG61c5e3d33 [2018-11-07 18:15:40,918 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ceb0a946/6309ff8b4e3f4d9cb57e643644aee33a [2018-11-07 18:15:40,930 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:15:40,932 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:15:40,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:15:40,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:15:40,937 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:15:40,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:15:40" (1/1) ... [2018-11-07 18:15:40,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d29b3da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:40, skipping insertion in model container [2018-11-07 18:15:40,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:15:40" (1/1) ... [2018-11-07 18:15:40,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:15:41,034 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:15:41,969 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:15:41,974 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:15:42,264 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:15:42,285 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:15:42,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:42 WrapperNode [2018-11-07 18:15:42,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:15:42,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:15:42,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:15:42,287 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:15:42,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:42" (1/1) ... [2018-11-07 18:15:42,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:42" (1/1) ... [2018-11-07 18:15:42,497 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:15:42,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:15:42,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:15:42,498 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:15:42,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:42" (1/1) ... [2018-11-07 18:15:42,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:42" (1/1) ... [2018-11-07 18:15:42,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:42" (1/1) ... [2018-11-07 18:15:42,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:42" (1/1) ... [2018-11-07 18:15:42,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:42" (1/1) ... [2018-11-07 18:15:42,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:42" (1/1) ... [2018-11-07 18:15:42,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:42" (1/1) ... [2018-11-07 18:15:42,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:15:42,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:15:42,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:15:42,655 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:15:42,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:15:42,733 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:15:42,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:15:42,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:15:42,733 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 18:15:42,733 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 18:15:42,734 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:15:42,734 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:15:42,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:15:42,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:15:42,734 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:15:42,735 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:15:48,440 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:15:48,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:15:48 BoogieIcfgContainer [2018-11-07 18:15:48,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:15:48,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:15:48,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:15:48,446 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:15:48,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:15:40" (1/3) ... [2018-11-07 18:15:48,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572f6f17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:15:48, skipping insertion in model container [2018-11-07 18:15:48,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:15:42" (2/3) ... [2018-11-07 18:15:48,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572f6f17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:15:48, skipping insertion in model container [2018-11-07 18:15:48,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:15:48" (3/3) ... [2018-11-07 18:15:48,450 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label38_false-unreach-call.c [2018-11-07 18:15:48,460 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:15:48,470 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:15:48,489 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:15:48,532 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:15:48,532 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:15:48,532 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:15:48,532 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:15:48,533 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:15:48,533 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:15:48,533 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:15:48,533 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:15:48,567 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 18:15:48,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-07 18:15:48,574 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:15:48,576 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:15:48,578 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:15:48,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:15:48,585 INFO L82 PathProgramCache]: Analyzing trace with hash 104890836, now seen corresponding path program 1 times [2018-11-07 18:15:48,588 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:15:48,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:48,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:15:48,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:48,639 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:15:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:15:49,006 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:15:49,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:15:49,108 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:15:49,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:15:49,109 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:15:49,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:15:49,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:15:49,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:15:49,136 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 18:15:52,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:15:52,741 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 18:15:52,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:15:52,747 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-11-07 18:15:52,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:15:52,776 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 18:15:52,776 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 18:15:52,787 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:15:52,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 18:15:52,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 18:15:52,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 18:15:52,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-11-07 18:15:52,901 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 18 [2018-11-07 18:15:52,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:15:52,902 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-11-07 18:15:52,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:15:52,902 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-11-07 18:15:52,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-07 18:15:52,911 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:15:52,911 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:15:52,915 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:15:52,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:15:52,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1793228522, now seen corresponding path program 1 times [2018-11-07 18:15:52,915 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:15:52,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:52,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:15:52,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:52,921 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:15:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:15:53,368 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:15:53,369 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:15:53,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:15:53,369 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:15:53,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:15:53,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:15:53,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:15:53,373 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-11-07 18:15:59,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:15:59,571 INFO L93 Difference]: Finished difference Result 2183 states and 3908 transitions. [2018-11-07 18:15:59,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:15:59,572 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-11-07 18:15:59,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:15:59,590 INFO L225 Difference]: With dead ends: 2183 [2018-11-07 18:15:59,590 INFO L226 Difference]: Without dead ends: 1445 [2018-11-07 18:15:59,596 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:15:59,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2018-11-07 18:15:59,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1424. [2018-11-07 18:15:59,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2018-11-07 18:15:59,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2239 transitions. [2018-11-07 18:15:59,687 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2239 transitions. Word has length 126 [2018-11-07 18:15:59,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:15:59,688 INFO L480 AbstractCegarLoop]: Abstraction has 1424 states and 2239 transitions. [2018-11-07 18:15:59,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:15:59,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2239 transitions. [2018-11-07 18:15:59,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-11-07 18:15:59,692 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:15:59,692 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:15:59,693 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:15:59,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:15:59,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1202682773, now seen corresponding path program 1 times [2018-11-07 18:15:59,693 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:15:59,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:59,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:15:59,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:59,695 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:15:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:15:59,948 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:15:59,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:15:59,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:15:59,948 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:15:59,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:15:59,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:15:59,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:15:59,950 INFO L87 Difference]: Start difference. First operand 1424 states and 2239 transitions. Second operand 6 states. [2018-11-07 18:16:03,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:16:03,838 INFO L93 Difference]: Finished difference Result 3902 states and 6351 transitions. [2018-11-07 18:16:03,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:16:03,840 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-11-07 18:16:03,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:16:03,862 INFO L225 Difference]: With dead ends: 3902 [2018-11-07 18:16:03,862 INFO L226 Difference]: Without dead ends: 2484 [2018-11-07 18:16:03,869 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:16:03,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2018-11-07 18:16:03,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2018-11-07 18:16:03,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2018-11-07 18:16:03,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3744 transitions. [2018-11-07 18:16:03,951 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3744 transitions. Word has length 129 [2018-11-07 18:16:03,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:16:03,952 INFO L480 AbstractCegarLoop]: Abstraction has 2474 states and 3744 transitions. [2018-11-07 18:16:03,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:16:03,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3744 transitions. [2018-11-07 18:16:03,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-11-07 18:16:03,958 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:16:03,959 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:16:03,959 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:16:03,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:16:03,960 INFO L82 PathProgramCache]: Analyzing trace with hash -317720455, now seen corresponding path program 1 times [2018-11-07 18:16:03,960 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:16:03,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:16:03,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:16:03,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:16:03,961 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:16:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:16:04,332 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:16:04,761 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 22 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:16:04,761 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:16:04,762 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:16:04,763 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 246 with the following transitions: [2018-11-07 18:16:04,773 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [223], [225], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:16:04,864 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:16:04,865 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:16:05,702 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:16:05,704 INFO L272 AbstractInterpreter]: Visited 121 different actions 121 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 18:16:05,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:16:05,737 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:16:06,744 INFO L227 lantSequenceWeakener]: Weakened 223 states. On average, predicates are now at 77.38% of their original sizes. [2018-11-07 18:16:06,745 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:16:08,005 INFO L415 sIntCurrentIteration]: We unified 244 AI predicates to 244 [2018-11-07 18:16:08,005 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:16:08,006 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:16:08,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 18:16:08,007 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:16:08,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 18:16:08,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 18:16:08,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 18:16:08,009 INFO L87 Difference]: Start difference. First operand 2474 states and 3744 transitions. Second operand 10 states. [2018-11-07 18:16:12,333 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:16:30,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:16:30,969 INFO L93 Difference]: Finished difference Result 5285 states and 7974 transitions. [2018-11-07 18:16:30,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 18:16:30,970 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 245 [2018-11-07 18:16:30,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:16:30,985 INFO L225 Difference]: With dead ends: 5285 [2018-11-07 18:16:30,986 INFO L226 Difference]: Without dead ends: 2817 [2018-11-07 18:16:30,995 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 248 GetRequests, 193 SyntacticMatches, 43 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-07 18:16:30,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2018-11-07 18:16:31,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2812. [2018-11-07 18:16:31,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2018-11-07 18:16:31,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4089 transitions. [2018-11-07 18:16:31,068 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4089 transitions. Word has length 245 [2018-11-07 18:16:31,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:16:31,069 INFO L480 AbstractCegarLoop]: Abstraction has 2812 states and 4089 transitions. [2018-11-07 18:16:31,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 18:16:31,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4089 transitions. [2018-11-07 18:16:31,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-11-07 18:16:31,075 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:16:31,076 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2018-11-07 18:16:31,076 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:16:31,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:16:31,077 INFO L82 PathProgramCache]: Analyzing trace with hash 310121175, now seen corresponding path program 1 times [2018-11-07 18:16:31,077 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:16:31,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:16:31,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:16:31,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:16:31,078 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:16:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:16:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 128 proven. 110 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-07 18:16:31,843 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:16:31,844 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:16:31,844 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 338 with the following transitions: [2018-11-07 18:16:31,844 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [223], [225], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:16:31,854 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:16:31,855 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:16:31,946 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:16:32,215 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:16:32,215 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:16:32,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:16:32,224 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:16:32,900 INFO L227 lantSequenceWeakener]: Weakened 117 states. On average, predicates are now at 77.6% of their original sizes. [2018-11-07 18:16:32,900 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:16:34,202 INFO L415 sIntCurrentIteration]: We unified 336 AI predicates to 336 [2018-11-07 18:16:34,203 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:16:34,203 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:16:34,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-07 18:16:34,203 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:16:34,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 18:16:34,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 18:16:34,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2018-11-07 18:16:34,205 INFO L87 Difference]: Start difference. First operand 2812 states and 4089 transitions. Second operand 23 states. [2018-11-07 18:17:33,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:17:33,933 INFO L93 Difference]: Finished difference Result 7342 states and 10805 transitions. [2018-11-07 18:17:33,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-07 18:17:33,933 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 337 [2018-11-07 18:17:33,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:17:33,955 INFO L225 Difference]: With dead ends: 7342 [2018-11-07 18:17:33,955 INFO L226 Difference]: Without dead ends: 4874 [2018-11-07 18:17:33,966 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 356 GetRequests, 300 SyntacticMatches, 15 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=325, Invalid=1481, Unknown=0, NotChecked=0, Total=1806 [2018-11-07 18:17:33,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2018-11-07 18:17:34,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 4406. [2018-11-07 18:17:34,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4406 states. [2018-11-07 18:17:34,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 5749 transitions. [2018-11-07 18:17:34,077 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 5749 transitions. Word has length 337 [2018-11-07 18:17:34,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:17:34,078 INFO L480 AbstractCegarLoop]: Abstraction has 4406 states and 5749 transitions. [2018-11-07 18:17:34,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-07 18:17:34,078 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 5749 transitions. [2018-11-07 18:17:34,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-11-07 18:17:34,086 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:17:34,087 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 18:17:34,087 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:17:34,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:17:34,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1701187807, now seen corresponding path program 1 times [2018-11-07 18:17:34,088 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:17:34,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:17:34,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:17:34,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:17:34,089 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:17:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:17:34,402 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 18:17:34,553 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 18:17:44,116 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 152 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 18:17:44,117 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:17:44,117 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:17:44,117 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 374 with the following transitions: [2018-11-07 18:17:44,117 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [223], [225], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:17:44,123 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:17:44,123 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:17:44,270 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:17:44,634 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:17:44,634 INFO L272 AbstractInterpreter]: Visited 137 different actions 398 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:17:44,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:17:44,672 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:17:45,202 INFO L227 lantSequenceWeakener]: Weakened 117 states. On average, predicates are now at 77.6% of their original sizes. [2018-11-07 18:17:45,203 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:17:45,737 INFO L415 sIntCurrentIteration]: We unified 372 AI predicates to 372 [2018-11-07 18:17:45,737 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:17:45,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:17:45,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [13] total 34 [2018-11-07 18:17:45,738 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:17:45,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 18:17:45,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 18:17:45,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2018-11-07 18:17:45,739 INFO L87 Difference]: Start difference. First operand 4406 states and 5749 transitions. Second operand 23 states. [2018-11-07 18:18:20,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:18:20,665 INFO L93 Difference]: Finished difference Result 9178 states and 12540 transitions. [2018-11-07 18:18:20,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 18:18:20,665 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 373 [2018-11-07 18:18:20,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:18:20,690 INFO L225 Difference]: With dead ends: 9178 [2018-11-07 18:18:20,691 INFO L226 Difference]: Without dead ends: 5983 [2018-11-07 18:18:20,702 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 387 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=265, Invalid=1141, Unknown=0, NotChecked=0, Total=1406 [2018-11-07 18:18:20,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5983 states. [2018-11-07 18:18:20,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5983 to 5967. [2018-11-07 18:18:20,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5967 states. [2018-11-07 18:18:20,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5967 states to 5967 states and 7383 transitions. [2018-11-07 18:18:20,859 INFO L78 Accepts]: Start accepts. Automaton has 5967 states and 7383 transitions. Word has length 373 [2018-11-07 18:18:20,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:18:20,860 INFO L480 AbstractCegarLoop]: Abstraction has 5967 states and 7383 transitions. [2018-11-07 18:18:20,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-07 18:18:20,860 INFO L276 IsEmpty]: Start isEmpty. Operand 5967 states and 7383 transitions. [2018-11-07 18:18:20,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2018-11-07 18:18:20,878 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:18:20,879 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 18:18:20,879 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:18:20,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:18:20,880 INFO L82 PathProgramCache]: Analyzing trace with hash 760629951, now seen corresponding path program 1 times [2018-11-07 18:18:20,880 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:18:20,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:18:20,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:18:20,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:18:20,881 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:18:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:18:21,959 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 143 proven. 123 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-11-07 18:18:21,959 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:18:21,959 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:18:21,960 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 486 with the following transitions: [2018-11-07 18:18:21,960 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [223], [225], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:18:21,970 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:18:21,970 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:18:22,422 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:18:22,422 INFO L272 AbstractInterpreter]: Visited 249 different actions 494 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:18:22,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:18:22,427 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:18:23,492 INFO L227 lantSequenceWeakener]: Weakened 255 states. On average, predicates are now at 77.51% of their original sizes. [2018-11-07 18:18:23,493 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:18:25,848 INFO L415 sIntCurrentIteration]: We unified 484 AI predicates to 484 [2018-11-07 18:18:25,848 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:18:25,849 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:18:25,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [8] total 24 [2018-11-07 18:18:25,849 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:18:25,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 18:18:25,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 18:18:25,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-11-07 18:18:25,851 INFO L87 Difference]: Start difference. First operand 5967 states and 7383 transitions. Second operand 18 states. [2018-11-07 18:18:28,075 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:18:52,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:18:52,094 INFO L93 Difference]: Finished difference Result 10490 states and 13544 transitions. [2018-11-07 18:18:52,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 18:18:52,094 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 485 [2018-11-07 18:18:52,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:18:52,122 INFO L225 Difference]: With dead ends: 10490 [2018-11-07 18:18:52,123 INFO L226 Difference]: Without dead ends: 6603 [2018-11-07 18:18:52,138 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 500 GetRequests, 422 SyntacticMatches, 46 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2018-11-07 18:18:52,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6603 states. [2018-11-07 18:18:52,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6603 to 6598. [2018-11-07 18:18:52,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6598 states. [2018-11-07 18:18:52,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6598 states to 6598 states and 8048 transitions. [2018-11-07 18:18:52,301 INFO L78 Accepts]: Start accepts. Automaton has 6598 states and 8048 transitions. Word has length 485 [2018-11-07 18:18:52,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:18:52,302 INFO L480 AbstractCegarLoop]: Abstraction has 6598 states and 8048 transitions. [2018-11-07 18:18:52,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 18:18:52,303 INFO L276 IsEmpty]: Start isEmpty. Operand 6598 states and 8048 transitions. [2018-11-07 18:18:52,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2018-11-07 18:18:52,323 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:18:52,324 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 18:18:52,324 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:18:52,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:18:52,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1794009679, now seen corresponding path program 1 times [2018-11-07 18:18:52,325 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:18:52,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:18:52,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:18:52,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:18:52,326 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:18:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:18:52,774 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:18:52,999 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 39 proven. 260 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 18:18:52,999 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:18:52,999 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:18:52,999 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 494 with the following transitions: [2018-11-07 18:18:53,000 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [223], [225], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:18:53,004 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:18:53,004 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:18:55,269 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:18:55,270 INFO L272 AbstractInterpreter]: Visited 257 different actions 2516 times. Merged at 5 different actions 45 times. Widened at 1 different actions 5 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:18:55,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:18:55,278 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:18:56,630 INFO L227 lantSequenceWeakener]: Weakened 39 states. On average, predicates are now at 78.21% of their original sizes. [2018-11-07 18:18:56,631 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:18:57,031 INFO L415 sIntCurrentIteration]: We unified 492 AI predicates to 492 [2018-11-07 18:18:57,032 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:18:57,032 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:18:57,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-11-07 18:18:57,032 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:18:57,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 18:18:57,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 18:18:57,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2018-11-07 18:18:57,035 INFO L87 Difference]: Start difference. First operand 6598 states and 8048 transitions. Second operand 22 states. [2018-11-07 18:18:59,117 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:19:14,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:19:14,448 INFO L93 Difference]: Finished difference Result 11126 states and 14227 transitions. [2018-11-07 18:19:14,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-07 18:19:14,449 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 493 [2018-11-07 18:19:14,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:19:14,470 INFO L225 Difference]: With dead ends: 11126 [2018-11-07 18:19:14,471 INFO L226 Difference]: Without dead ends: 7239 [2018-11-07 18:19:14,481 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 503 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2018-11-07 18:19:14,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7239 states. [2018-11-07 18:19:14,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7239 to 7231. [2018-11-07 18:19:14,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7231 states. [2018-11-07 18:19:14,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7231 states to 7231 states and 8726 transitions. [2018-11-07 18:19:14,624 INFO L78 Accepts]: Start accepts. Automaton has 7231 states and 8726 transitions. Word has length 493 [2018-11-07 18:19:14,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:19:14,625 INFO L480 AbstractCegarLoop]: Abstraction has 7231 states and 8726 transitions. [2018-11-07 18:19:14,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-07 18:19:14,625 INFO L276 IsEmpty]: Start isEmpty. Operand 7231 states and 8726 transitions. [2018-11-07 18:19:14,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2018-11-07 18:19:14,649 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:19:14,649 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-11-07 18:19:14,650 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:19:14,650 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:19:14,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1002905885, now seen corresponding path program 1 times [2018-11-07 18:19:14,650 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:19:14,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:19:14,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:19:14,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:19:14,652 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:19:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:19:15,569 WARN L179 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 18:19:15,987 WARN L179 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-07 18:19:17,634 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 144 proven. 223 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-11-07 18:19:17,634 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:19:17,634 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:19:17,634 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 578 with the following transitions: [2018-11-07 18:19:17,635 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [223], [225], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:19:17,639 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:19:17,639 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:19:17,686 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:19:18,342 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:19:18,343 INFO L272 AbstractInterpreter]: Visited 250 different actions 995 times. Merged at 7 different actions 28 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 18:19:18,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:19:18,351 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:19:18,806 INFO L227 lantSequenceWeakener]: Weakened 574 states. On average, predicates are now at 77.31% of their original sizes. [2018-11-07 18:19:18,807 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:19:18,904 INFO L415 sIntCurrentIteration]: We unified 576 AI predicates to 576 [2018-11-07 18:19:18,904 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:19:18,904 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:19:18,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 21 [2018-11-07 18:19:18,905 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:19:18,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 18:19:18,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 18:19:18,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 18:19:18,906 INFO L87 Difference]: Start difference. First operand 7231 states and 8726 transitions. Second operand 10 states. Received shutdown request... [2018-11-07 18:19:21,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 18:19:21,672 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:19:21,677 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:19:21,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:19:21 BoogieIcfgContainer [2018-11-07 18:19:21,678 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:19:21,678 INFO L168 Benchmark]: Toolchain (without parser) took 220747.78 ms. Allocated memory was 1.5 GB in the beginning and 5.6 GB in the end (delta: 4.1 GB). Free memory was 1.4 GB in the beginning and 928.0 MB in the end (delta: 502.2 MB). Peak memory consumption was 4.6 GB. Max. memory is 7.1 GB. [2018-11-07 18:19:21,679 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 18:19:21,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1353.44 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 18:19:21,681 INFO L168 Benchmark]: Boogie Procedure Inliner took 210.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -872.1 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2018-11-07 18:19:21,682 INFO L168 Benchmark]: Boogie Preprocessor took 157.09 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 18:19:21,682 INFO L168 Benchmark]: RCFGBuilder took 5786.28 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 248.7 MB). Peak memory consumption was 248.7 MB. Max. memory is 7.1 GB. [2018-11-07 18:19:21,683 INFO L168 Benchmark]: TraceAbstraction took 213235.68 ms. Allocated memory was 2.3 GB in the beginning and 5.6 GB in the end (delta: 3.3 GB). Free memory was 2.0 GB in the beginning and 928.0 MB in the end (delta: 1.0 GB). Peak memory consumption was 4.4 GB. Max. memory is 7.1 GB. [2018-11-07 18:19:21,688 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 1353.44 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 210.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -872.1 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 157.09 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5786.28 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 248.7 MB). Peak memory consumption was 248.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213235.68 ms. Allocated memory was 2.3 GB in the beginning and 5.6 GB in the end (delta: 3.3 GB). Free memory was 2.0 GB in the beginning and 928.0 MB in the end (delta: 1.0 GB). Peak memory consumption was 4.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 40]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 40). Cancelled while BasicCegarLoop was constructing difference of abstraction (7231states) and FLOYD_HOARE automaton (currently 13 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (446 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 213.1s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 178.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2379 SDtfs, 19828 SDslu, 1878 SDs, 0 SdLazy, 29136 SolverSat, 3899 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 62.8s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 2602 GetRequests, 2312 SyntacticMatches, 108 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1597 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7231occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.3s AbstIntTime, 6 AbstIntIterations, 6 AbstIntStrong, 0.9976596902888754 AbsIntWeakeningRatio, 0.07667731629392971 AbsIntAvgWeakeningVarsNumRemoved, 13.168530351437699 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 533 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 2783 NumberOfCodeBlocks, 2783 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2774 ConstructedInterpolants, 0 QuantifiedInterpolants, 9403817 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 1322/2254 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown