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/Problem15_label28_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:13:38,842 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:13:38,844 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:13:38,859 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:13:38,860 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:13:38,861 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:13:38,865 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:13:38,868 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:13:38,869 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:13:38,870 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:13:38,871 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:13:38,872 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:13:38,873 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:13:38,874 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:13:38,875 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:13:38,876 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:13:38,877 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:13:38,878 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:13:38,881 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:13:38,882 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:13:38,883 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:13:38,884 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:13:38,887 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:13:38,887 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:13:38,887 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:13:38,888 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:13:38,889 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:13:38,890 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:13:38,891 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:13:38,892 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:13:38,892 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:13:38,893 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:13:38,893 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:13:38,893 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:13:38,894 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:13:38,895 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:13:38,895 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 19:13:38,924 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:13:38,925 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:13:38,926 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:13:38,927 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:13:38,927 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:13:38,927 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:13:38,927 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:13:38,927 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:13:38,928 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:13:38,928 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:13:38,928 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:13:38,928 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:13:38,928 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:13:38,929 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:13:38,930 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:13:38,930 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:13:38,930 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:13:38,930 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:13:38,930 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:13:38,930 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:13:38,931 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:13:38,931 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:13:38,931 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:13:38,931 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:13:38,931 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:13:38,933 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:13:38,933 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:13:38,933 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:13:38,933 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:13:38,934 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:13:38,934 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:13:38,934 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:13:38,934 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:13:38,935 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:13:38,935 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:13:39,005 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:13:39,023 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:13:39,027 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:13:39,029 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:13:39,029 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:13:39,030 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label28_true-unreach-call.c [2018-11-12 19:13:39,109 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3211d8f6e/646dd99a24034a05ab94ea203ddc40f0/FLAG3958c3721 [2018-11-12 19:13:39,832 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:13:39,833 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label28_true-unreach-call.c [2018-11-12 19:13:39,851 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3211d8f6e/646dd99a24034a05ab94ea203ddc40f0/FLAG3958c3721 [2018-11-12 19:13:39,866 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3211d8f6e/646dd99a24034a05ab94ea203ddc40f0 [2018-11-12 19:13:39,880 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:13:39,881 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:13:39,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:13:39,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:13:39,889 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:13:39,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:13:39" (1/1) ... [2018-11-12 19:13:39,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243c94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:39, skipping insertion in model container [2018-11-12 19:13:39,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:13:39" (1/1) ... [2018-11-12 19:13:39,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:13:40,008 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:13:40,881 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:13:40,886 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:13:41,143 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:13:41,166 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:13:41,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:41 WrapperNode [2018-11-12 19:13:41,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:13:41,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:13:41,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:13:41,168 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:13:41,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:41" (1/1) ... [2018-11-12 19:13:41,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:41" (1/1) ... [2018-11-12 19:13:41,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:13:41,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:13:41,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:13:41,385 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:13:41,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:41" (1/1) ... [2018-11-12 19:13:41,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:41" (1/1) ... [2018-11-12 19:13:41,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:41" (1/1) ... [2018-11-12 19:13:41,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:41" (1/1) ... [2018-11-12 19:13:41,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:41" (1/1) ... [2018-11-12 19:13:41,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:41" (1/1) ... [2018-11-12 19:13:41,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:41" (1/1) ... [2018-11-12 19:13:41,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:13:41,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:13:41,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:13:41,545 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:13:41,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:41" (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 19:13:41,611 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:13:41,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:13:41,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:13:41,612 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:13:41,612 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:13:41,612 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:13:41,612 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:13:41,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:13:41,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:13:41,613 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:13:41,613 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:13:48,568 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:13:48,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:13:48 BoogieIcfgContainer [2018-11-12 19:13:48,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:13:48,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:13:48,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:13:48,576 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:13:48,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:13:39" (1/3) ... [2018-11-12 19:13:48,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460b300f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:13:48, skipping insertion in model container [2018-11-12 19:13:48,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:13:41" (2/3) ... [2018-11-12 19:13:48,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460b300f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:13:48, skipping insertion in model container [2018-11-12 19:13:48,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:13:48" (3/3) ... [2018-11-12 19:13:48,580 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label28_true-unreach-call.c [2018-11-12 19:13:48,590 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:13:48,600 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:13:48,620 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:13:48,670 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:13:48,671 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:13:48,671 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:13:48,671 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:13:48,671 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:13:48,671 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:13:48,672 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:13:48,672 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:13:48,716 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-12 19:13:48,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-12 19:13:48,724 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:13:48,725 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:13:48,728 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:13:48,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:48,734 INFO L82 PathProgramCache]: Analyzing trace with hash 339561401, now seen corresponding path program 1 times [2018-11-12 19:13:48,737 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:13:48,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:48,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:13:48,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:48,788 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:13:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:49,249 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:13:49,355 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 19:13:49,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:13:49,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 19:13:49,359 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:13:49,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:13:49,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:13:49,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:13:49,384 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-11-12 19:13:52,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:13:52,710 INFO L93 Difference]: Finished difference Result 1194 states and 2152 transitions. [2018-11-12 19:13:52,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:13:52,712 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2018-11-12 19:13:52,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:13:52,734 INFO L225 Difference]: With dead ends: 1194 [2018-11-12 19:13:52,735 INFO L226 Difference]: Without dead ends: 754 [2018-11-12 19:13:52,746 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:13:52,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2018-11-12 19:13:52,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 752. [2018-11-12 19:13:52,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2018-11-12 19:13:52,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1325 transitions. [2018-11-12 19:13:52,855 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1325 transitions. Word has length 39 [2018-11-12 19:13:52,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:13:52,856 INFO L480 AbstractCegarLoop]: Abstraction has 752 states and 1325 transitions. [2018-11-12 19:13:52,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:13:52,856 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1325 transitions. [2018-11-12 19:13:52,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-12 19:13:52,867 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:13:52,867 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:13:52,867 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:13:52,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:13:52,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1690148053, now seen corresponding path program 1 times [2018-11-12 19:13:52,868 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:13:52,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:52,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:13:52,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:13:52,870 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:13:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:13:53,270 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:13:53,270 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:13:53,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:13:53,270 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:13:53,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:13:53,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:13:53,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:13:53,273 INFO L87 Difference]: Start difference. First operand 752 states and 1325 transitions. Second operand 6 states. [2018-11-12 19:14:02,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:14:02,262 INFO L93 Difference]: Finished difference Result 2839 states and 5159 transitions. [2018-11-12 19:14:02,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 19:14:02,262 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-11-12 19:14:02,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:14:02,281 INFO L225 Difference]: With dead ends: 2839 [2018-11-12 19:14:02,281 INFO L226 Difference]: Without dead ends: 2093 [2018-11-12 19:14:02,289 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:14:02,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2018-11-12 19:14:02,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 2052. [2018-11-12 19:14:02,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2052 states. [2018-11-12 19:14:02,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 3398 transitions. [2018-11-12 19:14:02,387 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 3398 transitions. Word has length 113 [2018-11-12 19:14:02,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:14:02,388 INFO L480 AbstractCegarLoop]: Abstraction has 2052 states and 3398 transitions. [2018-11-12 19:14:02,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:14:02,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 3398 transitions. [2018-11-12 19:14:02,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-11-12 19:14:02,396 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:14:02,396 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:14:02,396 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:14:02,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:14:02,397 INFO L82 PathProgramCache]: Analyzing trace with hash 55667084, now seen corresponding path program 1 times [2018-11-12 19:14:02,397 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:14:02,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:14:02,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:14:02,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:14:02,398 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:14:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:14:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:14:02,620 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:14:02,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 19:14:02,620 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:14:02,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 19:14:02,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 19:14:02,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 19:14:02,622 INFO L87 Difference]: Start difference. First operand 2052 states and 3398 transitions. Second operand 5 states. [2018-11-12 19:14:06,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:14:06,714 INFO L93 Difference]: Finished difference Result 6119 states and 10292 transitions. [2018-11-12 19:14:06,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 19:14:06,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2018-11-12 19:14:06,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:14:06,740 INFO L225 Difference]: With dead ends: 6119 [2018-11-12 19:14:06,740 INFO L226 Difference]: Without dead ends: 4073 [2018-11-12 19:14:06,750 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:14:06,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4073 states. [2018-11-12 19:14:06,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4073 to 3992. [2018-11-12 19:14:06,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3992 states. [2018-11-12 19:14:06,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 5866 transitions. [2018-11-12 19:14:06,873 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 5866 transitions. Word has length 116 [2018-11-12 19:14:06,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:14:06,873 INFO L480 AbstractCegarLoop]: Abstraction has 3992 states and 5866 transitions. [2018-11-12 19:14:06,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 19:14:06,874 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 5866 transitions. [2018-11-12 19:14:06,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-12 19:14:06,879 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:14:06,879 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:14:06,879 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:14:06,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:14:06,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1327529950, now seen corresponding path program 1 times [2018-11-12 19:14:06,880 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:14:06,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:14:06,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:14:06,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:14:06,881 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:14:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:14:07,167 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:14:07,440 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:14:07,441 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:14:07,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:14:07,441 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:14:07,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:14:07,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:14:07,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:14:07,443 INFO L87 Difference]: Start difference. First operand 3992 states and 5866 transitions. Second operand 6 states. [2018-11-12 19:14:11,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:14:11,924 INFO L93 Difference]: Finished difference Result 11063 states and 16902 transitions. [2018-11-12 19:14:11,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:14:11,929 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-11-12 19:14:11,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:14:11,974 INFO L225 Difference]: With dead ends: 11063 [2018-11-12 19:14:11,974 INFO L226 Difference]: Without dead ends: 7077 [2018-11-12 19:14:12,010 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:14:12,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7077 states. [2018-11-12 19:14:12,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7077 to 6975. [2018-11-12 19:14:12,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6975 states. [2018-11-12 19:14:12,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6975 states to 6975 states and 9521 transitions. [2018-11-12 19:14:12,220 INFO L78 Accepts]: Start accepts. Automaton has 6975 states and 9521 transitions. Word has length 126 [2018-11-12 19:14:12,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:14:12,221 INFO L480 AbstractCegarLoop]: Abstraction has 6975 states and 9521 transitions. [2018-11-12 19:14:12,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:14:12,221 INFO L276 IsEmpty]: Start isEmpty. Operand 6975 states and 9521 transitions. [2018-11-12 19:14:12,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-12 19:14:12,225 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:14:12,225 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:14:12,225 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:14:12,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:14:12,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1824244347, now seen corresponding path program 1 times [2018-11-12 19:14:12,226 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:14:12,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:14:12,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:14:12,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:14:12,228 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:14:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:14:12,556 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:14:12,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:14:12,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 19:14:12,556 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:14:12,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 19:14:12,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 19:14:12,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 19:14:12,558 INFO L87 Difference]: Start difference. First operand 6975 states and 9521 transitions. Second operand 5 states. [2018-11-12 19:14:19,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:14:19,873 INFO L93 Difference]: Finished difference Result 18643 states and 26318 transitions. [2018-11-12 19:14:19,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 19:14:19,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2018-11-12 19:14:19,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:14:19,932 INFO L225 Difference]: With dead ends: 18643 [2018-11-12 19:14:19,932 INFO L226 Difference]: Without dead ends: 11674 [2018-11-12 19:14:19,968 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:14:19,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11674 states. [2018-11-12 19:14:20,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11674 to 11528. [2018-11-12 19:14:20,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11528 states. [2018-11-12 19:14:20,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11528 states to 11528 states and 15522 transitions. [2018-11-12 19:14:20,218 INFO L78 Accepts]: Start accepts. Automaton has 11528 states and 15522 transitions. Word has length 136 [2018-11-12 19:14:20,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:14:20,219 INFO L480 AbstractCegarLoop]: Abstraction has 11528 states and 15522 transitions. [2018-11-12 19:14:20,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 19:14:20,219 INFO L276 IsEmpty]: Start isEmpty. Operand 11528 states and 15522 transitions. [2018-11-12 19:14:20,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-11-12 19:14:20,223 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:14:20,223 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:14:20,223 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:14:20,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:14:20,224 INFO L82 PathProgramCache]: Analyzing trace with hash 298084566, now seen corresponding path program 1 times [2018-11-12 19:14:20,224 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:14:20,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:14:20,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:14:20,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:14:20,225 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:14:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:14:20,552 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:14:20,552 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:14:20,553 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:14:20,553 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 152 with the following transitions: [2018-11-12 19:14:20,556 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [285], [287], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:14:20,603 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:14:20,604 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:14:21,130 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:14:21,132 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Performed 1144 root evaluator evaluations with a maximum evaluation depth of 4. Performed 1144 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:14:21,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:14:21,174 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:14:21,679 INFO L227 lantSequenceWeakener]: Weakened 145 states. On average, predicates are now at 77.87% of their original sizes. [2018-11-12 19:14:21,679 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:14:22,163 INFO L415 sIntCurrentIteration]: We unified 150 AI predicates to 150 [2018-11-12 19:14:22,163 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:14:22,164 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:14:22,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-11-12 19:14:22,165 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:14:22,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-12 19:14:22,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-12 19:14:22,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:14:22,166 INFO L87 Difference]: Start difference. First operand 11528 states and 15522 transitions. Second operand 8 states. [2018-11-12 19:14:25,567 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:14:50,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:14:50,267 INFO L93 Difference]: Finished difference Result 23043 states and 31034 transitions. [2018-11-12 19:14:50,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 19:14:50,267 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 151 [2018-11-12 19:14:50,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:14:50,305 INFO L225 Difference]: With dead ends: 23043 [2018-11-12 19:14:50,305 INFO L226 Difference]: Without dead ends: 11521 [2018-11-12 19:14:50,335 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 152 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 19:14:50,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11521 states. [2018-11-12 19:14:50,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11521 to 11519. [2018-11-12 19:14:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11519 states. [2018-11-12 19:14:50,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11519 states to 11519 states and 15480 transitions. [2018-11-12 19:14:50,546 INFO L78 Accepts]: Start accepts. Automaton has 11519 states and 15480 transitions. Word has length 151 [2018-11-12 19:14:50,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:14:50,547 INFO L480 AbstractCegarLoop]: Abstraction has 11519 states and 15480 transitions. [2018-11-12 19:14:50,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-12 19:14:50,547 INFO L276 IsEmpty]: Start isEmpty. Operand 11519 states and 15480 transitions. [2018-11-12 19:14:50,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-11-12 19:14:50,552 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:14:50,553 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:14:50,553 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:14:50,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:14:50,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1643772052, now seen corresponding path program 1 times [2018-11-12 19:14:50,554 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:14:50,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:14:50,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:14:50,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:14:50,555 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:14:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:14:51,190 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:14:51,190 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:14:51,190 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:14:51,191 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 248 with the following transitions: [2018-11-12 19:14:51,191 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [285], [287], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:14:51,199 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:14:51,199 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:14:51,285 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:14:52,945 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:14:52,945 INFO L272 AbstractInterpreter]: Visited 120 different actions 804 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Performed 12737 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12737 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 19:14:52,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:14:52,986 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:14:53,474 INFO L227 lantSequenceWeakener]: Weakened 81 states. On average, predicates are now at 78.73% of their original sizes. [2018-11-12 19:14:53,475 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:14:55,131 INFO L415 sIntCurrentIteration]: We unified 246 AI predicates to 246 [2018-11-12 19:14:55,131 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:14:55,131 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:14:55,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [11] total 28 [2018-11-12 19:14:55,133 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:14:55,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 19:14:55,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 19:14:55,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2018-11-12 19:14:55,136 INFO L87 Difference]: Start difference. First operand 11519 states and 15480 transitions. Second operand 19 states. [2018-11-12 19:15:47,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:15:47,936 INFO L93 Difference]: Finished difference Result 24697 states and 32849 transitions. [2018-11-12 19:15:47,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-12 19:15:47,937 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 247 [2018-11-12 19:15:47,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:15:47,992 INFO L225 Difference]: With dead ends: 24697 [2018-11-12 19:15:47,992 INFO L226 Difference]: Without dead ends: 13492 [2018-11-12 19:15:48,038 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 260 GetRequests, 227 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=246, Invalid=810, Unknown=0, NotChecked=0, Total=1056 [2018-11-12 19:15:48,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13492 states. [2018-11-12 19:15:48,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13492 to 12983. [2018-11-12 19:15:48,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12983 states. [2018-11-12 19:15:48,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12983 states to 12983 states and 16984 transitions. [2018-11-12 19:15:48,380 INFO L78 Accepts]: Start accepts. Automaton has 12983 states and 16984 transitions. Word has length 247 [2018-11-12 19:15:48,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:15:48,381 INFO L480 AbstractCegarLoop]: Abstraction has 12983 states and 16984 transitions. [2018-11-12 19:15:48,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-12 19:15:48,381 INFO L276 IsEmpty]: Start isEmpty. Operand 12983 states and 16984 transitions. [2018-11-12 19:15:48,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-11-12 19:15:48,393 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:15:48,394 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:15:48,394 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:15:48,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:15:48,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1301366184, now seen corresponding path program 1 times [2018-11-12 19:15:48,395 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:15:48,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:15:48,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:15:48,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:15:48,396 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:15:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:15:49,084 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:15:49,084 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:15:49,084 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:15:49,085 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 412 with the following transitions: [2018-11-12 19:15:49,086 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [285], [287], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [695], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:15:49,094 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:15:49,094 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:15:49,318 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:15:49,645 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:15:49,645 INFO L272 AbstractInterpreter]: Visited 283 different actions 560 times. Merged at 5 different actions 5 times. Never widened. Performed 7625 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7625 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 19:15:49,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:15:49,684 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:15:50,377 INFO L227 lantSequenceWeakener]: Weakened 75 states. On average, predicates are now at 81.05% of their original sizes. [2018-11-12 19:15:50,377 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:15:50,856 INFO L415 sIntCurrentIteration]: We unified 410 AI predicates to 410 [2018-11-12 19:15:50,857 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:15:50,857 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:15:50,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-11-12 19:15:50,857 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:15:50,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-12 19:15:50,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-12 19:15:50,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-12 19:15:50,860 INFO L87 Difference]: Start difference. First operand 12983 states and 16984 transitions. Second operand 21 states. [2018-11-12 19:16:50,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:16:50,689 INFO L93 Difference]: Finished difference Result 25653 states and 34043 transitions. [2018-11-12 19:16:50,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-12 19:16:50,689 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 411 [2018-11-12 19:16:50,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:16:50,736 INFO L225 Difference]: With dead ends: 25653 [2018-11-12 19:16:50,736 INFO L226 Difference]: Without dead ends: 14448 [2018-11-12 19:16:50,760 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 428 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=279, Invalid=1203, Unknown=0, NotChecked=0, Total=1482 [2018-11-12 19:16:50,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14448 states. [2018-11-12 19:16:51,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14448 to 14129. [2018-11-12 19:16:51,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14129 states. [2018-11-12 19:16:51,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14129 states to 14129 states and 18229 transitions. [2018-11-12 19:16:51,038 INFO L78 Accepts]: Start accepts. Automaton has 14129 states and 18229 transitions. Word has length 411 [2018-11-12 19:16:51,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:16:51,038 INFO L480 AbstractCegarLoop]: Abstraction has 14129 states and 18229 transitions. [2018-11-12 19:16:51,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-12 19:16:51,039 INFO L276 IsEmpty]: Start isEmpty. Operand 14129 states and 18229 transitions. [2018-11-12 19:16:51,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-11-12 19:16:51,051 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:16:51,051 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:16:51,051 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:16:51,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:16:51,052 INFO L82 PathProgramCache]: Analyzing trace with hash 394036745, now seen corresponding path program 1 times [2018-11-12 19:16:51,052 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:16:51,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:16:51,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:16:51,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:16:51,054 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:16:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:16:52,433 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 35 proven. 135 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-12 19:16:52,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:16:52,434 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:16:52,434 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 427 with the following transitions: [2018-11-12 19:16:52,435 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [285], [287], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:16:52,440 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:16:52,440 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:16:52,665 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:16:53,904 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:16:53,904 INFO L272 AbstractInterpreter]: Visited 284 different actions 1121 times. Merged at 7 different actions 20 times. Never widened. Performed 18256 root evaluator evaluations with a maximum evaluation depth of 6. Performed 18256 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:16:53,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:16:53,911 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:16:53,911 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:16:53,911 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:16:53,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:16:53,922 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:16:54,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:16:54,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:16:55,062 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 19:16:55,062 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:16:55,315 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 19:16:55,347 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:16:55,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-11-12 19:16:55,348 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:16:55,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:16:55,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:16:55,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:16:55,349 INFO L87 Difference]: Start difference. First operand 14129 states and 18229 transitions. Second operand 3 states. [2018-11-12 19:16:59,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:16:59,552 INFO L93 Difference]: Finished difference Result 28232 states and 39071 transitions. [2018-11-12 19:16:59,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:16:59,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 426 [2018-11-12 19:16:59,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:16:59,606 INFO L225 Difference]: With dead ends: 28232 [2018-11-12 19:16:59,606 INFO L226 Difference]: Without dead ends: 17027 [2018-11-12 19:16:59,637 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 863 GetRequests, 855 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:16:59,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17027 states. [2018-11-12 19:16:59,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17027 to 17021. [2018-11-12 19:16:59,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17021 states. [2018-11-12 19:16:59,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17021 states to 17021 states and 22720 transitions. [2018-11-12 19:16:59,914 INFO L78 Accepts]: Start accepts. Automaton has 17021 states and 22720 transitions. Word has length 426 [2018-11-12 19:16:59,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:16:59,914 INFO L480 AbstractCegarLoop]: Abstraction has 17021 states and 22720 transitions. [2018-11-12 19:16:59,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:16:59,915 INFO L276 IsEmpty]: Start isEmpty. Operand 17021 states and 22720 transitions. [2018-11-12 19:16:59,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2018-11-12 19:16:59,931 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:16:59,931 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:16:59,932 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:16:59,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:16:59,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1766990316, now seen corresponding path program 1 times [2018-11-12 19:16:59,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:16:59,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:16:59,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:16:59,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:16:59,935 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:17:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:17:00,423 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:17:01,017 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 168 proven. 159 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-12 19:17:01,017 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:17:01,017 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:17:01,017 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 482 with the following transitions: [2018-11-12 19:17:01,018 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [285], [287], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [695], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 19:17:01,023 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:17:01,023 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:17:01,203 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:17:01,737 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:17:01,737 INFO L272 AbstractInterpreter]: Visited 284 different actions 851 times. Merged at 7 different actions 21 times. Never widened. Performed 12505 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12505 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 19:17:01,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:17:01,747 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:17:02,173 INFO L227 lantSequenceWeakener]: Weakened 478 states. On average, predicates are now at 80.21% of their original sizes. [2018-11-12 19:17:02,174 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:17:02,530 INFO L415 sIntCurrentIteration]: We unified 480 AI predicates to 480 [2018-11-12 19:17:02,531 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:17:02,531 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:17:02,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2018-11-12 19:17:02,532 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:17:02,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 19:17:02,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 19:17:02,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 19:17:02,533 INFO L87 Difference]: Start difference. First operand 17021 states and 22720 transitions. Second operand 11 states. Received shutdown request... [2018-11-12 19:17:16,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-12 19:17:16,253 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:17:16,258 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:17:16,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:17:16 BoogieIcfgContainer [2018-11-12 19:17:16,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:17:16,259 INFO L168 Benchmark]: Toolchain (without parser) took 216378.83 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-12 19:17:16,260 INFO L168 Benchmark]: CDTParser took 0.24 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 19:17:16,261 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1284.47 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-12 19:17:16,261 INFO L168 Benchmark]: Boogie Procedure Inliner took 216.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -907.4 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. [2018-11-12 19:17:16,262 INFO L168 Benchmark]: Boogie Preprocessor took 159.84 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-11-12 19:17:16,263 INFO L168 Benchmark]: RCFGBuilder took 7023.87 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: 284.5 MB). Peak memory consumption was 284.5 MB. Max. memory is 7.1 GB. [2018-11-12 19:17:16,264 INFO L168 Benchmark]: TraceAbstraction took 207688.63 ms. Allocated memory was 2.3 GB in the beginning and 4.5 GB in the end (delta: 2.2 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -620.0 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-12 19:17:16,269 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1284.47 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 216.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -907.4 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 159.84 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7023.87 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: 284.5 MB). Peak memory consumption was 284.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207688.63 ms. Allocated memory was 2.3 GB in the beginning and 4.5 GB in the end (delta: 2.2 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -620.0 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 103). Cancelled while BasicCegarLoop was constructing difference of abstraction (17021states) and FLOYD_HOARE automaton (currently 14 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (7943 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 207.6s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 187.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3054 SDtfs, 17416 SDslu, 3271 SDs, 0 SdLazy, 30675 SolverSat, 3219 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 85.7s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 2235 GetRequests, 2102 SyntacticMatches, 6 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17021occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.2s AbstIntTime, 5 AbstIntIterations, 4 AbstIntStrong, 0.9977161756394012 AbsIntWeakeningRatio, 0.08087091757387248 AbsIntAvgWeakeningVarsNumRemoved, 18.150077760497666 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 1208 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 2672 NumberOfCodeBlocks, 2672 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 3086 ConstructedInterpolants, 35 QuantifiedInterpolants, 4464489 SizeOfPredicates, 3 NumberOfNonLiveVariables, 607 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 12 InterpolantComputations, 7 PerfectInterpolantSequences, 1012/1342 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown