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/Problem11_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 18:35:19,859 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 18:35:19,862 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 18:35:19,882 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 18:35:19,882 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 18:35:19,884 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 18:35:19,886 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 18:35:19,888 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 18:35:19,890 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 18:35:19,891 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 18:35:19,892 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 18:35:19,892 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 18:35:19,893 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 18:35:19,896 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 18:35:19,898 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 18:35:19,898 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 18:35:19,899 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 18:35:19,910 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 18:35:19,912 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 18:35:19,915 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 18:35:19,918 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 18:35:19,919 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 18:35:19,923 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 18:35:19,923 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 18:35:19,923 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 18:35:19,925 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 18:35:19,926 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 18:35:19,927 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 18:35:19,927 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 18:35:19,928 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 18:35:19,929 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 18:35:19,929 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 18:35:19,929 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 18:35:19,930 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 18:35:19,931 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 18:35:19,931 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 18:35:19,932 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 18:35:19,946 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 18:35:19,947 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 18:35:19,947 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 18:35:19,948 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 18:35:19,948 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 18:35:19,948 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 18:35:19,948 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 18:35:19,948 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 18:35:19,949 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 18:35:19,949 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 18:35:19,949 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 18:35:19,949 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 18:35:19,949 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 18:35:19,950 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 18:35:19,950 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 18:35:19,951 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 18:35:19,951 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 18:35:19,951 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 18:35:19,951 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 18:35:19,951 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 18:35:19,952 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 18:35:19,952 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 18:35:19,952 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 18:35:19,952 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 18:35:19,952 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 18:35:19,953 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 18:35:19,953 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 18:35:19,953 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 18:35:19,953 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 18:35:19,953 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 18:35:19,954 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 18:35:19,954 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 18:35:19,954 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 18:35:19,954 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 18:35:19,954 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 18:35:20,015 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 18:35:20,029 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 18:35:20,032 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 18:35:20,034 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 18:35:20,035 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 18:35:20,035 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label10_true-unreach-call.c [2018-11-12 18:35:20,098 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e0de6add/f2d66cd8e9c34d39af8244517a4221e7/FLAG44b6072f4 [2018-11-12 18:35:20,726 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 18:35:20,731 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label10_true-unreach-call.c [2018-11-12 18:35:20,748 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e0de6add/f2d66cd8e9c34d39af8244517a4221e7/FLAG44b6072f4 [2018-11-12 18:35:20,769 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e0de6add/f2d66cd8e9c34d39af8244517a4221e7 [2018-11-12 18:35:20,782 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 18:35:20,784 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 18:35:20,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 18:35:20,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 18:35:20,789 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 18:35:20,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:35:20" (1/1) ... [2018-11-12 18:35:20,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24c95ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:20, skipping insertion in model container [2018-11-12 18:35:20,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:35:20" (1/1) ... [2018-11-12 18:35:20,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 18:35:20,887 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 18:35:21,440 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:35:21,448 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 18:35:21,662 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:35:21,686 INFO L193 MainTranslator]: Completed translation [2018-11-12 18:35:21,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:21 WrapperNode [2018-11-12 18:35:21,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 18:35:21,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 18:35:21,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 18:35:21,689 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 18:35:21,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:21" (1/1) ... [2018-11-12 18:35:21,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:21" (1/1) ... [2018-11-12 18:35:21,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 18:35:21,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 18:35:21,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 18:35:21,868 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 18:35:21,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:21" (1/1) ... [2018-11-12 18:35:21,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:21" (1/1) ... [2018-11-12 18:35:21,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:21" (1/1) ... [2018-11-12 18:35:21,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:21" (1/1) ... [2018-11-12 18:35:21,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:21" (1/1) ... [2018-11-12 18:35:21,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:21" (1/1) ... [2018-11-12 18:35:21,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:21" (1/1) ... [2018-11-12 18:35:21,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 18:35:21,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 18:35:21,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 18:35:21,985 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 18:35:21,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:21" (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 18:35:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 18:35:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 18:35:22,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 18:35:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 18:35:22,053 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 18:35:22,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 18:35:22,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 18:35:22,054 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 18:35:22,054 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 18:35:26,423 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 18:35:26,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:35:26 BoogieIcfgContainer [2018-11-12 18:35:26,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 18:35:26,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 18:35:26,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 18:35:26,429 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 18:35:26,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 06:35:20" (1/3) ... [2018-11-12 18:35:26,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad1c499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:35:26, skipping insertion in model container [2018-11-12 18:35:26,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:21" (2/3) ... [2018-11-12 18:35:26,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad1c499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:35:26, skipping insertion in model container [2018-11-12 18:35:26,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:35:26" (3/3) ... [2018-11-12 18:35:26,433 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label10_true-unreach-call.c [2018-11-12 18:35:26,444 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 18:35:26,453 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 18:35:26,471 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 18:35:26,512 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 18:35:26,512 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 18:35:26,513 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 18:35:26,513 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 18:35:26,513 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 18:35:26,513 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 18:35:26,514 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 18:35:26,514 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 18:35:26,545 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-12 18:35:26,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-12 18:35:26,552 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:35:26,553 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] [2018-11-12 18:35:26,556 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:35:26,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:35:26,563 INFO L82 PathProgramCache]: Analyzing trace with hash -250768471, now seen corresponding path program 1 times [2018-11-12 18:35:26,565 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:35:26,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:35:26,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:35:26,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:35:26,613 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:35:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:35:27,028 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-12 18:35:27,037 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 18:35:27,045 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:35:27,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 18:35:27,046 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:35:27,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 18:35:27,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 18:35:27,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:35:27,075 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-12 18:35:30,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:35:30,714 INFO L93 Difference]: Finished difference Result 1001 states and 1780 transitions. [2018-11-12 18:35:30,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 18:35:30,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-11-12 18:35:30,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:35:30,740 INFO L225 Difference]: With dead ends: 1001 [2018-11-12 18:35:30,741 INFO L226 Difference]: Without dead ends: 702 [2018-11-12 18:35:30,750 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:35:30,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2018-11-12 18:35:30,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 699. [2018-11-12 18:35:30,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2018-11-12 18:35:30,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1082 transitions. [2018-11-12 18:35:30,861 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1082 transitions. Word has length 29 [2018-11-12 18:35:30,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:35:30,862 INFO L480 AbstractCegarLoop]: Abstraction has 699 states and 1082 transitions. [2018-11-12 18:35:30,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 18:35:30,862 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1082 transitions. [2018-11-12 18:35:30,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-12 18:35:30,868 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:35:30,869 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:30,869 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:35:30,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:35:30,870 INFO L82 PathProgramCache]: Analyzing trace with hash -2105116581, now seen corresponding path program 1 times [2018-11-12 18:35:30,870 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:35:30,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:35:30,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:35:30,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:35:30,872 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:35:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:35:31,215 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:35:31,216 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:35:31,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 18:35:31,216 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:35:31,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:35:31,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:35:31,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:35:31,219 INFO L87 Difference]: Start difference. First operand 699 states and 1082 transitions. Second operand 6 states. [2018-11-12 18:35:35,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:35:35,990 INFO L93 Difference]: Finished difference Result 2534 states and 4100 transitions. [2018-11-12 18:35:35,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:35:35,991 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-11-12 18:35:35,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:35:36,009 INFO L225 Difference]: With dead ends: 2534 [2018-11-12 18:35:36,009 INFO L226 Difference]: Without dead ends: 1841 [2018-11-12 18:35:36,017 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 18:35:36,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2018-11-12 18:35:36,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1815. [2018-11-12 18:35:36,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1815 states. [2018-11-12 18:35:36,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2683 transitions. [2018-11-12 18:35:36,138 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2683 transitions. Word has length 102 [2018-11-12 18:35:36,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:35:36,138 INFO L480 AbstractCegarLoop]: Abstraction has 1815 states and 2683 transitions. [2018-11-12 18:35:36,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:35:36,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2683 transitions. [2018-11-12 18:35:36,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-11-12 18:35:36,145 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:35:36,145 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:36,145 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:35:36,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:35:36,146 INFO L82 PathProgramCache]: Analyzing trace with hash 367698756, now seen corresponding path program 1 times [2018-11-12 18:35:36,146 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:35:36,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:35:36,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:35:36,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:35:36,148 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:35:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:35:36,376 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:35:36,377 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:35:36,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 18:35:36,377 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:35:36,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 18:35:36,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 18:35:36,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:35:36,378 INFO L87 Difference]: Start difference. First operand 1815 states and 2683 transitions. Second operand 4 states. [2018-11-12 18:35:38,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:35:38,706 INFO L93 Difference]: Finished difference Result 4796 states and 7372 transitions. [2018-11-12 18:35:38,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 18:35:38,708 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2018-11-12 18:35:38,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:35:38,737 INFO L225 Difference]: With dead ends: 4796 [2018-11-12 18:35:38,737 INFO L226 Difference]: Without dead ends: 2987 [2018-11-12 18:35:38,749 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:35:38,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2018-11-12 18:35:38,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 2970. [2018-11-12 18:35:38,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2970 states. [2018-11-12 18:35:38,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 4362 transitions. [2018-11-12 18:35:38,860 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 4362 transitions. Word has length 103 [2018-11-12 18:35:38,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:35:38,861 INFO L480 AbstractCegarLoop]: Abstraction has 2970 states and 4362 transitions. [2018-11-12 18:35:38,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 18:35:38,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 4362 transitions. [2018-11-12 18:35:38,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-11-12 18:35:38,870 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:35:38,870 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:38,870 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:35:38,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:35:38,872 INFO L82 PathProgramCache]: Analyzing trace with hash -537163217, now seen corresponding path program 1 times [2018-11-12 18:35:38,872 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:35:38,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:35:38,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:35:38,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:35:38,873 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:35:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:35:39,196 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:35:39,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:35:39,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 18:35:39,197 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:35:39,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:35:39,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:35:39,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:35:39,198 INFO L87 Difference]: Start difference. First operand 2970 states and 4362 transitions. Second operand 6 states. [2018-11-12 18:35:42,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:35:42,604 INFO L93 Difference]: Finished difference Result 11408 states and 20931 transitions. [2018-11-12 18:35:42,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 18:35:42,608 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-11-12 18:35:42,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:35:42,717 INFO L225 Difference]: With dead ends: 11408 [2018-11-12 18:35:42,717 INFO L226 Difference]: Without dead ends: 8444 [2018-11-12 18:35:42,800 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 18:35:42,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8444 states. [2018-11-12 18:35:43,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8444 to 7648. [2018-11-12 18:35:43,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7648 states. [2018-11-12 18:35:43,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7648 states to 7648 states and 11142 transitions. [2018-11-12 18:35:43,127 INFO L78 Accepts]: Start accepts. Automaton has 7648 states and 11142 transitions. Word has length 128 [2018-11-12 18:35:43,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:35:43,128 INFO L480 AbstractCegarLoop]: Abstraction has 7648 states and 11142 transitions. [2018-11-12 18:35:43,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:35:43,128 INFO L276 IsEmpty]: Start isEmpty. Operand 7648 states and 11142 transitions. [2018-11-12 18:35:43,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-12 18:35:43,135 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:35:43,136 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:35:43,136 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:35:43,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:35:43,136 INFO L82 PathProgramCache]: Analyzing trace with hash -388558922, now seen corresponding path program 1 times [2018-11-12 18:35:43,137 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:35:43,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:35:43,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:35:43,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:35:43,138 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:35:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:35:43,557 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:35:43,558 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:35:43,558 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:35:43,559 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 177 with the following transitions: [2018-11-12 18:35:43,560 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [502], [503], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:35:43,603 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:35:43,604 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:35:44,060 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:35:44,065 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Performed 822 root evaluator evaluations with a maximum evaluation depth of 6. Performed 822 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 28 variables. [2018-11-12 18:35:44,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:35:44,077 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:35:44,576 INFO L227 lantSequenceWeakener]: Weakened 167 states. On average, predicates are now at 73.15% of their original sizes. [2018-11-12 18:35:44,576 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:35:44,767 INFO L415 sIntCurrentIteration]: We unified 175 AI predicates to 175 [2018-11-12 18:35:44,767 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:35:44,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:35:44,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-12 18:35:44,768 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:35:44,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 18:35:44,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 18:35:44,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 18:35:44,770 INFO L87 Difference]: Start difference. First operand 7648 states and 11142 transitions. Second operand 7 states. [2018-11-12 18:35:47,637 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:36:02,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:36:02,832 INFO L93 Difference]: Finished difference Result 15482 states and 22497 transitions. [2018-11-12 18:36:02,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:36:02,832 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2018-11-12 18:36:02,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:36:02,895 INFO L225 Difference]: With dead ends: 15482 [2018-11-12 18:36:02,895 INFO L226 Difference]: Without dead ends: 7840 [2018-11-12 18:36:02,930 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 176 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 18:36:02,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7840 states. [2018-11-12 18:36:03,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7840 to 7838. [2018-11-12 18:36:03,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7838 states. [2018-11-12 18:36:03,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7838 states to 7838 states and 11343 transitions. [2018-11-12 18:36:03,535 INFO L78 Accepts]: Start accepts. Automaton has 7838 states and 11343 transitions. Word has length 176 [2018-11-12 18:36:03,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:36:03,536 INFO L480 AbstractCegarLoop]: Abstraction has 7838 states and 11343 transitions. [2018-11-12 18:36:03,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 18:36:03,536 INFO L276 IsEmpty]: Start isEmpty. Operand 7838 states and 11343 transitions. [2018-11-12 18:36:03,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-11-12 18:36:03,543 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:36:03,543 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:36:03,544 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:36:03,544 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:03,544 INFO L82 PathProgramCache]: Analyzing trace with hash 987927268, now seen corresponding path program 1 times [2018-11-12 18:36:03,544 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:36:03,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:03,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:03,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:03,546 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:36:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:03,958 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:36:03,958 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:36:03,958 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:36:03,958 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 234 with the following transitions: [2018-11-12 18:36:03,959 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [502], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:36:03,967 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:36:03,967 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:36:04,104 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:36:04,851 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:36:04,851 INFO L272 AbstractInterpreter]: Visited 141 different actions 409 times. Merged at 5 different actions 9 times. Never widened. Performed 6208 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6208 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 18:36:04,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:04,882 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:36:04,882 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:36:04,882 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 18:36:04,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:04,897 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:36:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:05,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:36:05,301 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:36:05,301 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:36:05,644 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:36:05,680 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:36:05,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-12 18:36:05,681 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:36:05,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 18:36:05,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 18:36:05,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-12 18:36:05,683 INFO L87 Difference]: Start difference. First operand 7838 states and 11343 transitions. Second operand 9 states. [2018-11-12 18:36:13,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:36:13,361 INFO L93 Difference]: Finished difference Result 21959 states and 42220 transitions. [2018-11-12 18:36:13,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-12 18:36:13,361 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 233 [2018-11-12 18:36:13,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:36:13,499 INFO L225 Difference]: With dead ends: 21959 [2018-11-12 18:36:13,499 INFO L226 Difference]: Without dead ends: 14317 [2018-11-12 18:36:13,597 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 469 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-11-12 18:36:13,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14317 states. [2018-11-12 18:36:14,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14317 to 14158. [2018-11-12 18:36:14,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14158 states. [2018-11-12 18:36:14,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14158 states to 14158 states and 24731 transitions. [2018-11-12 18:36:14,475 INFO L78 Accepts]: Start accepts. Automaton has 14158 states and 24731 transitions. Word has length 233 [2018-11-12 18:36:14,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:36:14,476 INFO L480 AbstractCegarLoop]: Abstraction has 14158 states and 24731 transitions. [2018-11-12 18:36:14,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 18:36:14,476 INFO L276 IsEmpty]: Start isEmpty. Operand 14158 states and 24731 transitions. [2018-11-12 18:36:14,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-11-12 18:36:14,488 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:36:14,489 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:36:14,489 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:36:14,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:14,490 INFO L82 PathProgramCache]: Analyzing trace with hash 877957787, now seen corresponding path program 1 times [2018-11-12 18:36:14,490 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:36:14,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:14,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:14,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:14,494 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:36:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:15,254 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 4 proven. 47 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-11-12 18:36:15,254 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:36:15,254 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:36:15,255 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-11-12 18:36:15,255 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:36:15,260 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:36:15,260 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:36:15,349 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:36:15,688 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:36:15,688 INFO L272 AbstractInterpreter]: Visited 135 different actions 392 times. Merged at 5 different actions 9 times. Never widened. Performed 5107 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5107 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 18:36:15,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:15,692 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:36:16,115 INFO L227 lantSequenceWeakener]: Weakened 248 states. On average, predicates are now at 73.17% of their original sizes. [2018-11-12 18:36:16,115 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:36:16,551 INFO L415 sIntCurrentIteration]: We unified 250 AI predicates to 250 [2018-11-12 18:36:16,551 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:36:16,551 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:36:16,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2018-11-12 18:36:16,551 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:36:16,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:36:16,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:36:16,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:36:16,553 INFO L87 Difference]: Start difference. First operand 14158 states and 24731 transitions. Second operand 11 states. [2018-11-12 18:36:33,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:36:33,501 INFO L93 Difference]: Finished difference Result 29088 states and 50491 transitions. [2018-11-12 18:36:33,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 18:36:33,501 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 251 [2018-11-12 18:36:33,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:36:33,606 INFO L225 Difference]: With dead ends: 29088 [2018-11-12 18:36:33,606 INFO L226 Difference]: Without dead ends: 15126 [2018-11-12 18:36:33,694 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 260 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-11-12 18:36:33,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15126 states. [2018-11-12 18:36:34,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15126 to 15121. [2018-11-12 18:36:34,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15121 states. [2018-11-12 18:36:34,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15121 states to 15121 states and 25848 transitions. [2018-11-12 18:36:34,337 INFO L78 Accepts]: Start accepts. Automaton has 15121 states and 25848 transitions. Word has length 251 [2018-11-12 18:36:34,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:36:34,337 INFO L480 AbstractCegarLoop]: Abstraction has 15121 states and 25848 transitions. [2018-11-12 18:36:34,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:36:34,338 INFO L276 IsEmpty]: Start isEmpty. Operand 15121 states and 25848 transitions. [2018-11-12 18:36:34,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-11-12 18:36:34,348 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:36:34,348 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:36:34,349 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:36:34,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:34,349 INFO L82 PathProgramCache]: Analyzing trace with hash 875315048, now seen corresponding path program 1 times [2018-11-12 18:36:34,349 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:36:34,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:34,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:34,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:34,350 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:36:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 45 proven. 6 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-11-12 18:36:35,541 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:36:35,541 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:36:35,541 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-11-12 18:36:35,542 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [574], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:36:35,551 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:36:35,551 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:36:35,671 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:36:36,479 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:36:36,479 INFO L272 AbstractInterpreter]: Visited 141 different actions 558 times. Merged at 7 different actions 28 times. Never widened. Performed 9028 root evaluator evaluations with a maximum evaluation depth of 6. Performed 9028 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-12 18:36:36,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:36,484 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:36:36,484 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:36:36,484 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 18:36:36,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:36,493 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:36:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:36,584 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:36:36,698 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:36:36,698 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:36:36,892 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:36:36,913 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:36:36,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2018-11-12 18:36:36,913 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:36:36,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:36:36,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:36:36,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-11-12 18:36:36,915 INFO L87 Difference]: Start difference. First operand 15121 states and 25848 transitions. Second operand 11 states. [2018-11-12 18:36:42,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:36:42,945 INFO L93 Difference]: Finished difference Result 39550 states and 82004 transitions. [2018-11-12 18:36:42,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-12 18:36:42,946 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 251 [2018-11-12 18:36:42,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:36:43,177 INFO L225 Difference]: With dead ends: 39550 [2018-11-12 18:36:43,178 INFO L226 Difference]: Without dead ends: 25428 [2018-11-12 18:36:43,358 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 504 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2018-11-12 18:36:43,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25428 states. [2018-11-12 18:36:44,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25428 to 25380. [2018-11-12 18:36:44,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25380 states. [2018-11-12 18:36:44,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25380 states to 25380 states and 41007 transitions. [2018-11-12 18:36:44,446 INFO L78 Accepts]: Start accepts. Automaton has 25380 states and 41007 transitions. Word has length 251 [2018-11-12 18:36:44,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:36:44,447 INFO L480 AbstractCegarLoop]: Abstraction has 25380 states and 41007 transitions. [2018-11-12 18:36:44,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:36:44,447 INFO L276 IsEmpty]: Start isEmpty. Operand 25380 states and 41007 transitions. [2018-11-12 18:36:44,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-11-12 18:36:44,455 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:36:44,456 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:36:44,456 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:36:44,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:44,456 INFO L82 PathProgramCache]: Analyzing trace with hash -458311476, now seen corresponding path program 1 times [2018-11-12 18:36:44,456 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:36:44,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:44,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:44,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:44,458 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:36:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:45,263 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-12 18:36:45,651 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 123 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:36:45,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:36:45,651 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:36:45,651 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 254 with the following transitions: [2018-11-12 18:36:45,652 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [582], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:36:45,655 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:36:45,655 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:36:45,859 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:36:46,997 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:36:46,997 INFO L272 AbstractInterpreter]: Visited 141 different actions 689 times. Merged at 7 different actions 29 times. Never widened. Performed 12776 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12776 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 5 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-12 18:36:47,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:47,011 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:36:47,011 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:36:47,011 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 18:36:47,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:47,021 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:36:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:47,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:36:48,594 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 89 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:36:48,594 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:36:49,385 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 107 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:36:49,406 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:36:49,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 9] total 21 [2018-11-12 18:36:49,407 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:36:49,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 18:36:49,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 18:36:49,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2018-11-12 18:36:49,408 INFO L87 Difference]: Start difference. First operand 25380 states and 41007 transitions. Second operand 16 states. [2018-11-12 18:36:56,765 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2018-11-12 18:36:57,835 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 27 [2018-11-12 18:37:02,222 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 13 [2018-11-12 18:37:04,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:37:04,101 INFO L93 Difference]: Finished difference Result 59770 states and 112451 transitions. [2018-11-12 18:37:04,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-11-12 18:37:04,102 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 253 [2018-11-12 18:37:04,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:37:04,473 INFO L225 Difference]: With dead ends: 59770 [2018-11-12 18:37:04,473 INFO L226 Difference]: Without dead ends: 35547 [2018-11-12 18:37:04,711 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 506 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=759, Invalid=1997, Unknown=0, NotChecked=0, Total=2756 [2018-11-12 18:37:04,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35547 states. [2018-11-12 18:37:05,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35547 to 33540. [2018-11-12 18:37:05,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33540 states. [2018-11-12 18:37:06,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33540 states to 33540 states and 53485 transitions. [2018-11-12 18:37:06,207 INFO L78 Accepts]: Start accepts. Automaton has 33540 states and 53485 transitions. Word has length 253 [2018-11-12 18:37:06,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:37:06,207 INFO L480 AbstractCegarLoop]: Abstraction has 33540 states and 53485 transitions. [2018-11-12 18:37:06,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 18:37:06,207 INFO L276 IsEmpty]: Start isEmpty. Operand 33540 states and 53485 transitions. [2018-11-12 18:37:06,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-11-12 18:37:06,216 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:37:06,216 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:37:06,216 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:37:06,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:37:06,217 INFO L82 PathProgramCache]: Analyzing trace with hash 936880995, now seen corresponding path program 1 times [2018-11-12 18:37:06,217 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:37:06,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:37:06,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:37:06,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:37:06,218 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:37:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:37:06,788 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 51 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:37:06,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:37:06,789 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:37:06,789 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 257 with the following transitions: [2018-11-12 18:37:06,789 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:37:06,792 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:37:06,792 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:37:06,865 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:37:07,309 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:37:07,309 INFO L272 AbstractInterpreter]: Visited 141 different actions 409 times. Merged at 5 different actions 9 times. Never widened. Performed 6263 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6263 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 18:37:07,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:37:07,319 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:37:07,319 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:37:07,319 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 18:37:07,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:37:07,329 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:37:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:37:07,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:37:07,850 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-11-12 18:37:08,121 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:37:08,121 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:37:08,301 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2018-11-12 18:37:08,804 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 45 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:37:08,825 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:37:08,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 21 [2018-11-12 18:37:08,825 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:37:08,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 18:37:08,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 18:37:08,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-12 18:37:08,827 INFO L87 Difference]: Start difference. First operand 33540 states and 53485 transitions. Second operand 16 states. [2018-11-12 18:37:21,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:37:21,288 INFO L93 Difference]: Finished difference Result 82046 states and 174202 transitions. [2018-11-12 18:37:21,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-11-12 18:37:21,289 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 256 [2018-11-12 18:37:21,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:37:22,068 INFO L225 Difference]: With dead ends: 82046 [2018-11-12 18:37:22,069 INFO L226 Difference]: Without dead ends: 48912 [2018-11-12 18:37:22,387 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 503 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=832, Invalid=2950, Unknown=0, NotChecked=0, Total=3782 [2018-11-12 18:37:22,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48912 states. [2018-11-12 18:37:25,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48912 to 44750. [2018-11-12 18:37:25,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44750 states. [2018-11-12 18:37:26,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44750 states to 44750 states and 77765 transitions. [2018-11-12 18:37:26,882 INFO L78 Accepts]: Start accepts. Automaton has 44750 states and 77765 transitions. Word has length 256 [2018-11-12 18:37:26,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:37:26,882 INFO L480 AbstractCegarLoop]: Abstraction has 44750 states and 77765 transitions. [2018-11-12 18:37:26,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 18:37:26,883 INFO L276 IsEmpty]: Start isEmpty. Operand 44750 states and 77765 transitions. [2018-11-12 18:37:26,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-11-12 18:37:26,894 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:37:26,895 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:37:26,895 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:37:26,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:37:26,901 INFO L82 PathProgramCache]: Analyzing trace with hash -289913810, now seen corresponding path program 1 times [2018-11-12 18:37:26,901 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:37:26,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:37:26,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:37:26,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:37:26,903 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:37:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:37:27,665 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-12 18:37:27,989 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-11-12 18:37:28,566 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 2 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:37:28,566 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:37:28,566 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:37:28,566 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 273 with the following transitions: [2018-11-12 18:37:28,567 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [869], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:37:28,569 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:37:28,570 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:37:28,660 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:37:29,238 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:37:29,239 INFO L272 AbstractInterpreter]: Visited 156 different actions 455 times. Merged at 5 different actions 9 times. Never widened. Performed 10350 root evaluator evaluations with a maximum evaluation depth of 6. Performed 10350 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 18:37:29,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:37:29,274 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:37:29,984 INFO L227 lantSequenceWeakener]: Weakened 58 states. On average, predicates are now at 74.37% of their original sizes. [2018-11-12 18:37:29,984 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:37:30,415 INFO L415 sIntCurrentIteration]: We unified 271 AI predicates to 271 [2018-11-12 18:37:30,415 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:37:30,416 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:37:30,416 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [15] total 35 [2018-11-12 18:37:30,416 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:37:30,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-12 18:37:30,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-12 18:37:30,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2018-11-12 18:37:30,418 INFO L87 Difference]: Start difference. First operand 44750 states and 77765 transitions. Second operand 22 states. [2018-11-12 18:38:13,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:38:13,666 INFO L93 Difference]: Finished difference Result 90987 states and 157401 transitions. [2018-11-12 18:38:13,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-12 18:38:13,666 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 272 [2018-11-12 18:38:13,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:38:13,960 INFO L225 Difference]: With dead ends: 90987 [2018-11-12 18:38:13,960 INFO L226 Difference]: Without dead ends: 46623 [2018-11-12 18:38:14,200 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 290 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=308, Invalid=1332, Unknown=0, NotChecked=0, Total=1640 [2018-11-12 18:38:14,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46623 states. [2018-11-12 18:38:15,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46623 to 46418. [2018-11-12 18:38:15,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46418 states. [2018-11-12 18:38:16,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46418 states to 46418 states and 79651 transitions. [2018-11-12 18:38:16,374 INFO L78 Accepts]: Start accepts. Automaton has 46418 states and 79651 transitions. Word has length 272 [2018-11-12 18:38:16,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:38:16,375 INFO L480 AbstractCegarLoop]: Abstraction has 46418 states and 79651 transitions. [2018-11-12 18:38:16,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-12 18:38:16,375 INFO L276 IsEmpty]: Start isEmpty. Operand 46418 states and 79651 transitions. [2018-11-12 18:38:16,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-11-12 18:38:16,414 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:38:16,414 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:38:16,414 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:38:16,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:38:16,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1907092427, now seen corresponding path program 1 times [2018-11-12 18:38:16,415 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:38:16,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:38:16,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:38:16,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:38:16,416 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:38:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:38:18,150 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 249 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:38:18,150 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:38:18,150 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:38:18,150 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 327 with the following transitions: [2018-11-12 18:38:18,151 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:38:18,153 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:38:18,153 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:38:18,200 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:38:19,467 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:38:19,468 INFO L272 AbstractInterpreter]: Visited 127 different actions 627 times. Merged at 8 different actions 40 times. Widened at 1 different actions 1 times. Performed 8985 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8985 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 8 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-12 18:38:19,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:38:19,476 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:38:19,476 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:38:19,476 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 18:38:19,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:38:19,486 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:38:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:38:19,591 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:38:20,483 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 247 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-12 18:38:20,483 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:38:20,607 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-11-12 18:38:20,954 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 247 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-12 18:38:20,975 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:38:20,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 20 [2018-11-12 18:38:20,975 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:38:20,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 18:38:20,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 18:38:20,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2018-11-12 18:38:20,977 INFO L87 Difference]: Start difference. First operand 46418 states and 79651 transitions. Second operand 18 states. [2018-11-12 18:38:29,514 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2018-11-12 18:38:35,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:38:35,666 INFO L93 Difference]: Finished difference Result 88077 states and 164846 transitions. [2018-11-12 18:38:35,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-11-12 18:38:35,666 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 326 [2018-11-12 18:38:35,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:38:36,127 INFO L225 Difference]: With dead ends: 88077 [2018-11-12 18:38:36,127 INFO L226 Difference]: Without dead ends: 43436 [2018-11-12 18:38:36,526 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 763 GetRequests, 692 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1448 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1049, Invalid=4063, Unknown=0, NotChecked=0, Total=5112 [2018-11-12 18:38:36,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43436 states. [2018-11-12 18:38:38,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43436 to 41045. [2018-11-12 18:38:38,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41045 states. [2018-11-12 18:38:39,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41045 states to 41045 states and 62914 transitions. [2018-11-12 18:38:39,118 INFO L78 Accepts]: Start accepts. Automaton has 41045 states and 62914 transitions. Word has length 326 [2018-11-12 18:38:39,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:38:39,118 INFO L480 AbstractCegarLoop]: Abstraction has 41045 states and 62914 transitions. [2018-11-12 18:38:39,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 18:38:39,119 INFO L276 IsEmpty]: Start isEmpty. Operand 41045 states and 62914 transitions. [2018-11-12 18:38:39,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-11-12 18:38:39,155 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:38:39,155 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:38:39,155 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:38:39,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:38:39,156 INFO L82 PathProgramCache]: Analyzing trace with hash -410986192, now seen corresponding path program 1 times [2018-11-12 18:38:39,156 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:38:39,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:38:39,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:38:39,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:38:39,157 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:38:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:38:39,537 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 76 proven. 157 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-11-12 18:38:39,538 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:38:39,538 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:38:39,538 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 327 with the following transitions: [2018-11-12 18:38:39,538 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [494], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:38:39,541 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:38:39,541 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:38:39,596 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:38:40,629 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:38:40,629 INFO L272 AbstractInterpreter]: Visited 142 different actions 843 times. Merged at 8 different actions 47 times. Widened at 1 different actions 1 times. Performed 13808 root evaluator evaluations with a maximum evaluation depth of 6. Performed 13808 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 10 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-12 18:38:40,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:38:40,638 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:38:40,638 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:38:40,638 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 18:38:40,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:38:40,649 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:38:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:38:40,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:38:40,893 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 232 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 18:38:40,893 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:38:41,463 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 232 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 18:38:41,482 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:38:41,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-11-12 18:38:41,483 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:38:41,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 18:38:41,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 18:38:41,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-11-12 18:38:41,484 INFO L87 Difference]: Start difference. First operand 41045 states and 62914 transitions. Second operand 10 states. Received shutdown request... [2018-11-12 18:38:48,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-11-12 18:38:48,549 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 18:38:48,555 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 18:38:48,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 06:38:48 BoogieIcfgContainer [2018-11-12 18:38:48,556 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 18:38:48,557 INFO L168 Benchmark]: Toolchain (without parser) took 207774.27 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-12 18:38:48,558 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 18:38:48,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 902.14 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-11-12 18:38:48,559 INFO L168 Benchmark]: Boogie Procedure Inliner took 179.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -844.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2018-11-12 18:38:48,560 INFO L168 Benchmark]: Boogie Preprocessor took 117.33 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 18:38:48,561 INFO L168 Benchmark]: RCFGBuilder took 4439.35 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 171.9 MB). Peak memory consumption was 171.9 MB. Max. memory is 7.1 GB. [2018-11-12 18:38:48,562 INFO L168 Benchmark]: TraceAbstraction took 202130.35 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 2.0 GB in the beginning and 2.7 GB in the end (delta: -651.4 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-12 18:38:48,566 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 902.14 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 179.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -844.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.33 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 4439.35 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 171.9 MB). Peak memory consumption was 171.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202130.35 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 2.0 GB in the beginning and 2.7 GB in the end (delta: -651.4 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 72). Cancelled while BasicCegarLoop was constructing difference of abstraction (41045states) and FLOYD_HOARE automaton (currently 56 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (11807 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 202.0s OverallTime, 13 OverallIterations, 4 TraceHistogramMax, 159.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2767 SDtfs, 22285 SDslu, 5650 SDs, 0 SdLazy, 49234 SolverSat, 7803 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 79.1s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 4418 GetRequests, 4041 SyntacticMatches, 15 SemanticMatches, 362 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4909 ImplicationChecksByTransitivity, 17.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46418occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.8s AbstIntTime, 9 AbstIntIterations, 3 AbstIntStrong, 0.9975445566034645 AbsIntWeakeningRatio, 0.1206896551724138 AbsIntAvgWeakeningVarsNumRemoved, 18.363505747126435 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 14.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 9821 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 14.5s InterpolantComputationTime, 4351 NumberOfCodeBlocks, 4351 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 5971 ConstructedInterpolants, 2 QuantifiedInterpolants, 11939135 SizeOfPredicates, 20 NumberOfNonLiveVariables, 2977 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 25 InterpolantComputations, 4 PerfectInterpolantSequences, 3209/3931 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown