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 0.1.23-63daa26 [2018-11-12 16:44:01,953 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:44:01,955 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:44:01,972 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:44:01,972 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:44:01,974 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:44:01,976 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:44:01,978 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:44:01,980 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:44:01,984 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:44:01,987 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:44:01,987 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:44:01,988 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:44:01,989 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:44:01,992 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:44:01,999 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:44:02,003 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:44:02,005 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:44:02,008 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:44:02,012 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:44:02,013 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:44:02,015 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:44:02,019 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:44:02,020 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:44:02,020 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:44:02,021 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:44:02,023 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:44:02,024 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:44:02,025 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:44:02,026 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:44:02,027 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:44:02,027 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:44:02,027 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:44:02,029 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:44:02,030 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:44:02,031 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:44:02,031 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 [2018-11-12 16:44:02,059 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:44:02,061 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:44:02,062 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:44:02,062 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:44:02,062 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:44:02,062 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:44:02,063 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:44:02,065 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:44:02,066 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:44:02,066 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:44:02,066 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:44:02,066 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:44:02,066 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:44:02,067 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:44:02,068 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:44:02,068 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:44:02,068 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:44:02,068 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:44:02,068 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:44:02,069 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:44:02,070 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:44:02,071 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:44:02,071 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:44:02,071 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:44:02,071 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:44:02,071 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:44:02,072 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:44:02,072 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:44:02,072 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:44:02,072 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:44:02,073 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:44:02,073 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:44:02,073 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:44:02,073 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:44:02,074 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:44:02,131 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:44:02,147 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:44:02,152 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:44:02,154 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:44:02,155 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:44:02,156 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label38_false-unreach-call.c [2018-11-12 16:44:02,244 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82af2c2e8/882a8b5871004a4fbae2a03f73cc0dd3/FLAGbcfaa23d2 [2018-11-12 16:44:02,959 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:44:02,960 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label38_false-unreach-call.c [2018-11-12 16:44:02,980 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82af2c2e8/882a8b5871004a4fbae2a03f73cc0dd3/FLAGbcfaa23d2 [2018-11-12 16:44:02,999 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82af2c2e8/882a8b5871004a4fbae2a03f73cc0dd3 [2018-11-12 16:44:03,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:44:03,014 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:44:03,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:44:03,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:44:03,021 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:44:03,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:44:03" (1/1) ... [2018-11-12 16:44:03,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425d5bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:03, skipping insertion in model container [2018-11-12 16:44:03,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:44:03" (1/1) ... [2018-11-12 16:44:03,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:44:03,139 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:44:03,997 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:44:04,002 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:44:04,246 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:44:04,290 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:44:04,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:04 WrapperNode [2018-11-12 16:44:04,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:44:04,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:44:04,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:44:04,296 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:44:04,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:04" (1/1) ... [2018-11-12 16:44:04,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:04" (1/1) ... [2018-11-12 16:44:04,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:44:04,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:44:04,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:44:04,514 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:44:04,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:04" (1/1) ... [2018-11-12 16:44:04,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:04" (1/1) ... [2018-11-12 16:44:04,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:04" (1/1) ... [2018-11-12 16:44:04,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:04" (1/1) ... [2018-11-12 16:44:04,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:04" (1/1) ... [2018-11-12 16:44:04,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:04" (1/1) ... [2018-11-12 16:44:04,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:04" (1/1) ... [2018-11-12 16:44:04,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:44:04,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:44:04,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:44:04,673 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:44:04,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:04" (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 [2018-11-12 16:44:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:44:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:44:04,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:44:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:44:04,734 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:44:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:44:04,735 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:44:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:44:04,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:44:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:44:04,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:44:10,495 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:44:10,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:44:10 BoogieIcfgContainer [2018-11-12 16:44:10,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:44:10,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:44:10,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:44:10,502 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:44:10,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:44:03" (1/3) ... [2018-11-12 16:44:10,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2ee1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:44:10, skipping insertion in model container [2018-11-12 16:44:10,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:04" (2/3) ... [2018-11-12 16:44:10,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2ee1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:44:10, skipping insertion in model container [2018-11-12 16:44:10,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:44:10" (3/3) ... [2018-11-12 16:44:10,506 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label38_false-unreach-call.c [2018-11-12 16:44:10,516 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:44:10,529 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:44:10,556 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:44:10,612 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:44:10,612 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:44:10,612 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:44:10,612 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:44:10,613 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:44:10,613 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:44:10,613 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:44:10,613 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:44:10,655 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-12 16:44:10,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-12 16:44:10,661 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:44:10,663 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:44:10,665 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:44:10,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:10,671 INFO L82 PathProgramCache]: Analyzing trace with hash 104890836, now seen corresponding path program 1 times [2018-11-12 16:44:10,674 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:44:10,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:10,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:44:10,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:10,725 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:44:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:11,112 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:44:11,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:44:11,225 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:44:11,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:44:11,225 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:44:11,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:44:11,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:44:11,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:44:11,248 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-12 16:44:14,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:44:14,604 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-12 16:44:14,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:44:14,612 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-11-12 16:44:14,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:44:14,645 INFO L225 Difference]: With dead ends: 1156 [2018-11-12 16:44:14,645 INFO L226 Difference]: Without dead ends: 744 [2018-11-12 16:44:14,654 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:44:14,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-12 16:44:14,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-12 16:44:14,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-12 16:44:14,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-11-12 16:44:14,752 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 18 [2018-11-12 16:44:14,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:44:14,752 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-11-12 16:44:14,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:44:14,753 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-11-12 16:44:14,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-12 16:44:14,760 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:44:14,760 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] [2018-11-12 16:44:14,761 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:44:14,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:14,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1793228522, now seen corresponding path program 1 times [2018-11-12 16:44:14,762 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:44:14,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:14,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:44:14,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:14,764 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:44:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:15,221 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:44:15,221 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:44:15,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:44:15,222 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:44:15,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:44:15,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:44:15,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:44:15,225 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-11-12 16:44:22,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:44:22,167 INFO L93 Difference]: Finished difference Result 2183 states and 3908 transitions. [2018-11-12 16:44:22,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:44:22,169 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-11-12 16:44:22,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:44:22,186 INFO L225 Difference]: With dead ends: 2183 [2018-11-12 16:44:22,186 INFO L226 Difference]: Without dead ends: 1445 [2018-11-12 16:44:22,192 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 [2018-11-12 16:44:22,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2018-11-12 16:44:22,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1424. [2018-11-12 16:44:22,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2018-11-12 16:44:22,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2239 transitions. [2018-11-12 16:44:22,270 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2239 transitions. Word has length 126 [2018-11-12 16:44:22,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:44:22,271 INFO L480 AbstractCegarLoop]: Abstraction has 1424 states and 2239 transitions. [2018-11-12 16:44:22,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:44:22,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2239 transitions. [2018-11-12 16:44:22,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-11-12 16:44:22,275 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:44:22,275 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] [2018-11-12 16:44:22,277 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:44:22,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:22,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1202682773, now seen corresponding path program 1 times [2018-11-12 16:44:22,278 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:44:22,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:22,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:44:22,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:22,280 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:44:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:22,538 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:44:22,538 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:44:22,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:44:22,538 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:44:22,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:44:22,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:44:22,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:44:22,540 INFO L87 Difference]: Start difference. First operand 1424 states and 2239 transitions. Second operand 6 states. [2018-11-12 16:44:26,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:44:26,534 INFO L93 Difference]: Finished difference Result 3902 states and 6351 transitions. [2018-11-12 16:44:26,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:44:26,544 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-11-12 16:44:26,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:44:26,566 INFO L225 Difference]: With dead ends: 3902 [2018-11-12 16:44:26,567 INFO L226 Difference]: Without dead ends: 2484 [2018-11-12 16:44:26,573 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 [2018-11-12 16:44:26,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2018-11-12 16:44:26,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2018-11-12 16:44:26,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2018-11-12 16:44:26,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3744 transitions. [2018-11-12 16:44:26,652 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3744 transitions. Word has length 129 [2018-11-12 16:44:26,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:44:26,652 INFO L480 AbstractCegarLoop]: Abstraction has 2474 states and 3744 transitions. [2018-11-12 16:44:26,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:44:26,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3744 transitions. [2018-11-12 16:44:26,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-11-12 16:44:26,659 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:44:26,660 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] [2018-11-12 16:44:26,660 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:44:26,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:26,660 INFO L82 PathProgramCache]: Analyzing trace with hash -317720455, now seen corresponding path program 1 times [2018-11-12 16:44:26,661 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:44:26,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:26,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:44:26,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:26,662 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:44:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 22 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:44:27,000 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:44:27,000 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:44:27,001 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 246 with the following transitions: [2018-11-12 16:44:27,004 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] [2018-11-12 16:44:27,055 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:44:27,055 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:44:27,878 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:44:27,880 INFO L272 AbstractInterpreter]: Visited 121 different actions 121 times. Never merged. Never widened. Performed 2032 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2032 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 16:44:27,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:27,912 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:44:28,920 INFO L227 lantSequenceWeakener]: Weakened 223 states. On average, predicates are now at 77.38% of their original sizes. [2018-11-12 16:44:28,920 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:44:30,420 INFO L415 sIntCurrentIteration]: We unified 244 AI predicates to 244 [2018-11-12 16:44:30,421 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:44:30,421 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:44:30,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-12 16:44:30,422 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:44:30,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 16:44:30,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 16:44:30,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:44:30,423 INFO L87 Difference]: Start difference. First operand 2474 states and 3744 transitions. Second operand 10 states. [2018-11-12 16:44:35,571 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:44:55,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:44:55,984 INFO L93 Difference]: Finished difference Result 5285 states and 7974 transitions. [2018-11-12 16:44:55,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 16:44:55,985 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 245 [2018-11-12 16:44:55,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:44:56,002 INFO L225 Difference]: With dead ends: 5285 [2018-11-12 16:44:56,002 INFO L226 Difference]: Without dead ends: 2817 [2018-11-12 16:44:56,011 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 248 GetRequests, 193 SyntacticMatches, 43 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-12 16:44:56,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2018-11-12 16:44:56,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2812. [2018-11-12 16:44:56,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2018-11-12 16:44:56,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4089 transitions. [2018-11-12 16:44:56,085 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4089 transitions. Word has length 245 [2018-11-12 16:44:56,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:44:56,086 INFO L480 AbstractCegarLoop]: Abstraction has 2812 states and 4089 transitions. [2018-11-12 16:44:56,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 16:44:56,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4089 transitions. [2018-11-12 16:44:56,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-11-12 16:44:56,093 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:44:56,093 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] [2018-11-12 16:44:56,094 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:44:56,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:56,094 INFO L82 PathProgramCache]: Analyzing trace with hash 310121175, now seen corresponding path program 1 times [2018-11-12 16:44:56,094 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:44:56,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:56,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:44:56,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:56,096 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:44:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:56,664 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 128 proven. 110 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-12 16:44:56,664 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:44:56,665 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:44:56,665 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 338 with the following transitions: [2018-11-12 16:44:56,665 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] [2018-11-12 16:44:56,671 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:44:56,671 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:44:56,773 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:44:57,380 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:44:57,381 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 5 different actions 9 times. Never widened. Performed 6052 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6052 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:44:57,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:57,420 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:44:58,211 INFO L227 lantSequenceWeakener]: Weakened 117 states. On average, predicates are now at 77.6% of their original sizes. [2018-11-12 16:44:58,211 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:45:00,992 INFO L415 sIntCurrentIteration]: We unified 336 AI predicates to 336 [2018-11-12 16:45:00,992 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:45:00,992 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:45:00,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-12 16:45:00,993 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:45:00,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-12 16:45:00,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-12 16:45:00,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2018-11-12 16:45:00,995 INFO L87 Difference]: Start difference. First operand 2812 states and 4089 transitions. Second operand 23 states. [2018-11-12 16:46:03,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:46:03,067 INFO L93 Difference]: Finished difference Result 7342 states and 10805 transitions. [2018-11-12 16:46:03,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-12 16:46:03,068 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 337 [2018-11-12 16:46:03,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:46:03,090 INFO L225 Difference]: With dead ends: 7342 [2018-11-12 16:46:03,091 INFO L226 Difference]: Without dead ends: 4874 [2018-11-12 16:46:03,102 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 356 GetRequests, 300 SyntacticMatches, 15 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=325, Invalid=1481, Unknown=0, NotChecked=0, Total=1806 [2018-11-12 16:46:03,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2018-11-12 16:46:03,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 4406. [2018-11-12 16:46:03,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4406 states. [2018-11-12 16:46:03,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4406 states to 4406 states and 5749 transitions. [2018-11-12 16:46:03,215 INFO L78 Accepts]: Start accepts. Automaton has 4406 states and 5749 transitions. Word has length 337 [2018-11-12 16:46:03,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:46:03,216 INFO L480 AbstractCegarLoop]: Abstraction has 4406 states and 5749 transitions. [2018-11-12 16:46:03,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-12 16:46:03,216 INFO L276 IsEmpty]: Start isEmpty. Operand 4406 states and 5749 transitions. [2018-11-12 16:46:03,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-11-12 16:46:03,225 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:46:03,225 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] [2018-11-12 16:46:03,226 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:46:03,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:46:03,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1701187807, now seen corresponding path program 1 times [2018-11-12 16:46:03,226 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:46:03,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:46:03,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:46:03,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:46:03,228 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:46:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:46:04,104 WARN L179 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-12 16:46:04,486 WARN L179 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-12 16:46:13,834 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 152 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 16:46:13,835 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:46:13,835 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:46:13,836 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 374 with the following transitions: [2018-11-12 16:46:13,836 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] [2018-11-12 16:46:13,841 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:46:13,841 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:46:13,916 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:46:14,301 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:46:14,302 INFO L272 AbstractInterpreter]: Visited 137 different actions 398 times. Merged at 5 different actions 9 times. Never widened. Performed 6090 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6090 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:46:14,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:46:14,340 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:46:14,883 INFO L227 lantSequenceWeakener]: Weakened 137 states. On average, predicates are now at 77.55% of their original sizes. [2018-11-12 16:46:14,883 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:46:15,490 INFO L415 sIntCurrentIteration]: We unified 372 AI predicates to 372 [2018-11-12 16:46:15,490 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:46:15,491 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:46:15,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [13] total 36 [2018-11-12 16:46:15,491 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:46:15,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-12 16:46:15,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-12 16:46:15,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2018-11-12 16:46:15,492 INFO L87 Difference]: Start difference. First operand 4406 states and 5749 transitions. Second operand 25 states. [2018-11-12 16:46:57,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:46:57,483 INFO L93 Difference]: Finished difference Result 9414 states and 12893 transitions. [2018-11-12 16:46:57,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-12 16:46:57,483 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 373 [2018-11-12 16:46:57,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:46:57,513 INFO L225 Difference]: With dead ends: 9414 [2018-11-12 16:46:57,514 INFO L226 Difference]: Without dead ends: 6219 [2018-11-12 16:46:57,525 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 391 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=341, Invalid=1551, Unknown=0, NotChecked=0, Total=1892 [2018-11-12 16:46:57,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6219 states. [2018-11-12 16:46:57,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6219 to 5969. [2018-11-12 16:46:57,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5969 states. [2018-11-12 16:46:57,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5969 states to 5969 states and 7385 transitions. [2018-11-12 16:46:57,691 INFO L78 Accepts]: Start accepts. Automaton has 5969 states and 7385 transitions. Word has length 373 [2018-11-12 16:46:57,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:46:57,692 INFO L480 AbstractCegarLoop]: Abstraction has 5969 states and 7385 transitions. [2018-11-12 16:46:57,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-12 16:46:57,692 INFO L276 IsEmpty]: Start isEmpty. Operand 5969 states and 7385 transitions. [2018-11-12 16:46:57,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2018-11-12 16:46:57,708 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:46:57,708 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] [2018-11-12 16:46:57,709 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:46:57,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:46:57,709 INFO L82 PathProgramCache]: Analyzing trace with hash 760629951, now seen corresponding path program 1 times [2018-11-12 16:46:57,709 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:46:57,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:46:57,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:46:57,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:46:57,711 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:46:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:46:58,302 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-11-12 16:46:58,504 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-11-12 16:46:59,301 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 143 proven. 123 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-11-12 16:46:59,302 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:46:59,302 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:46:59,302 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 486 with the following transitions: [2018-11-12 16:46:59,303 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] [2018-11-12 16:46:59,309 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:46:59,309 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:46:59,777 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:46:59,778 INFO L272 AbstractInterpreter]: Visited 249 different actions 494 times. Merged at 5 different actions 7 times. Never widened. Performed 8674 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8674 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:46:59,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:46:59,788 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:47:00,865 INFO L227 lantSequenceWeakener]: Weakened 255 states. On average, predicates are now at 77.51% of their original sizes. [2018-11-12 16:47:00,865 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:47:01,269 INFO L415 sIntCurrentIteration]: We unified 484 AI predicates to 484 [2018-11-12 16:47:01,269 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:47:01,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:47:01,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [8] total 25 [2018-11-12 16:47:01,270 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:47:01,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 16:47:01,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 16:47:01,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2018-11-12 16:47:01,272 INFO L87 Difference]: Start difference. First operand 5969 states and 7385 transitions. Second operand 19 states. [2018-11-12 16:47:03,168 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:47:22,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:47:22,704 INFO L93 Difference]: Finished difference Result 10494 states and 13548 transitions. [2018-11-12 16:47:22,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-12 16:47:22,705 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 485 [2018-11-12 16:47:22,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:47:22,733 INFO L225 Difference]: With dead ends: 10494 [2018-11-12 16:47:22,734 INFO L226 Difference]: Without dead ends: 6605 [2018-11-12 16:47:22,746 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 502 GetRequests, 461 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=249, Invalid=1083, Unknown=0, NotChecked=0, Total=1332 [2018-11-12 16:47:22,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6605 states. [2018-11-12 16:47:22,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6605 to 6600. [2018-11-12 16:47:22,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6600 states. [2018-11-12 16:47:22,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6600 states to 6600 states and 8050 transitions. [2018-11-12 16:47:22,905 INFO L78 Accepts]: Start accepts. Automaton has 6600 states and 8050 transitions. Word has length 485 [2018-11-12 16:47:22,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:47:22,906 INFO L480 AbstractCegarLoop]: Abstraction has 6600 states and 8050 transitions. [2018-11-12 16:47:22,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-12 16:47:22,906 INFO L276 IsEmpty]: Start isEmpty. Operand 6600 states and 8050 transitions. [2018-11-12 16:47:22,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2018-11-12 16:47:22,926 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:47:22,926 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] [2018-11-12 16:47:22,927 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:47:22,927 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:47:22,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1794009679, now seen corresponding path program 1 times [2018-11-12 16:47:22,927 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:47:22,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:47:22,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:47:22,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:47:22,929 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:47:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:47:23,343 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:47:23,963 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 39 proven. 260 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-12 16:47:23,963 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:47:23,964 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:47:23,964 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 494 with the following transitions: [2018-11-12 16:47:23,965 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] [2018-11-12 16:47:23,972 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:47:23,972 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:47:27,248 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:47:27,248 INFO L272 AbstractInterpreter]: Visited 257 different actions 2516 times. Merged at 5 different actions 45 times. Widened at 1 different actions 5 times. Performed 44450 root evaluator evaluations with a maximum evaluation depth of 6. Performed 44450 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:47:27,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:47:27,257 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:47:27,925 INFO L227 lantSequenceWeakener]: Weakened 39 states. On average, predicates are now at 78.21% of their original sizes. [2018-11-12 16:47:27,926 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:47:28,304 INFO L415 sIntCurrentIteration]: We unified 492 AI predicates to 492 [2018-11-12 16:47:28,305 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:47:28,305 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:47:28,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-11-12 16:47:28,305 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:47:28,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-12 16:47:28,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-12 16:47:28,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2018-11-12 16:47:28,308 INFO L87 Difference]: Start difference. First operand 6600 states and 8050 transitions. Second operand 22 states. [2018-11-12 16:47:30,243 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-12 16:47:40,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-12 16:47:40,216 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:47:40,221 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:47:40,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:47:40 BoogieIcfgContainer [2018-11-12 16:47:40,221 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:47:40,222 INFO L168 Benchmark]: Toolchain (without parser) took 217210.83 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 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-11-12 16:47:40,223 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-11-12 16:47:40,224 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1277.08 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: 76.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. [2018-11-12 16:47:40,225 INFO L168 Benchmark]: Boogie Procedure Inliner took 221.29 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 725.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -852.5 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-11-12 16:47:40,225 INFO L168 Benchmark]: Boogie Preprocessor took 158.78 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. [2018-11-12 16:47:40,226 INFO L168 Benchmark]: RCFGBuilder took 5824.06 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 257.8 MB). Peak memory consumption was 257.8 MB. Max. memory is 7.1 GB. [2018-11-12 16:47:40,227 INFO L168 Benchmark]: TraceAbstraction took 209723.65 ms. Allocated memory was 2.3 GB in the beginning and 5.6 GB in the end (delta: 3.3 GB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -895.1 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-12 16:47:40,232 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1277.08 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: 76.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 221.29 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 725.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -852.5 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 158.78 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 5824.06 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 257.8 MB). Peak memory consumption was 257.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209723.65 ms. Allocated memory was 2.3 GB in the beginning and 5.6 GB in the end (delta: 3.3 GB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -895.1 MB). Peak memory consumption was 2.5 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 (6600states) and FLOYD_HOARE automaton (currently 25 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (2459 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 209.6s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 177.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2012 SDtfs, 19905 SDslu, 1798 SDs, 0 SdLazy, 27015 SolverSat, 3682 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 67.7s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 2023 GetRequests, 1781 SyntacticMatches, 68 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1669 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6600occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.9s AbstIntTime, 5 AbstIntIterations, 5 AbstIntStrong, 0.9976260227985386 AbsIntWeakeningRatio, 0.07987551867219916 AbsIntAvgWeakeningVarsNumRemoved, 9.764004149377593 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 759 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 2206 NumberOfCodeBlocks, 2206 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2198 ConstructedInterpolants, 0 QuantifiedInterpolants, 5482409 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 887/1596 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown