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_label09_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 18:35:12,872 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 18:35:12,874 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 18:35:12,886 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 18:35:12,886 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 18:35:12,887 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 18:35:12,888 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 18:35:12,890 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 18:35:12,892 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 18:35:12,893 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 18:35:12,894 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 18:35:12,894 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 18:35:12,895 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 18:35:12,896 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 18:35:12,897 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 18:35:12,898 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 18:35:12,899 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 18:35:12,901 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 18:35:12,903 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 18:35:12,905 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 18:35:12,906 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 18:35:12,907 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 18:35:12,910 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 18:35:12,910 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 18:35:12,910 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 18:35:12,911 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 18:35:12,915 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 18:35:12,916 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 18:35:12,917 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 18:35:12,918 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 18:35:12,922 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 18:35:12,923 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 18:35:12,923 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 18:35:12,923 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 18:35:12,924 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 18:35:12,927 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 18:35:12,928 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 18:35:12,960 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 18:35:12,960 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 18:35:12,961 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 18:35:12,964 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 18:35:12,964 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 18:35:12,964 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 18:35:12,964 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 18:35:12,964 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 18:35:12,965 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 18:35:12,965 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 18:35:12,965 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 18:35:12,966 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 18:35:12,966 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 18:35:12,967 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 18:35:12,967 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 18:35:12,967 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 18:35:12,967 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 18:35:12,967 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 18:35:12,967 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 18:35:12,969 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 18:35:12,970 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 18:35:12,970 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 18:35:12,970 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 18:35:12,970 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 18:35:12,970 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 18:35:12,971 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 18:35:12,971 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 18:35:12,971 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 18:35:12,971 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 18:35:12,972 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 18:35:12,972 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 18:35:12,972 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 18:35:12,972 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 18:35:12,972 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 18:35:12,973 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 18:35:13,042 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 18:35:13,054 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 18:35:13,058 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 18:35:13,059 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 18:35:13,059 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 18:35:13,060 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label09_true-unreach-call.c [2018-11-12 18:35:13,117 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf2064f90/92bbddf75c534106b6fa260f13658e8e/FLAG9d89f2a81 [2018-11-12 18:35:13,706 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 18:35:13,710 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label09_true-unreach-call.c [2018-11-12 18:35:13,733 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf2064f90/92bbddf75c534106b6fa260f13658e8e/FLAG9d89f2a81 [2018-11-12 18:35:13,752 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf2064f90/92bbddf75c534106b6fa260f13658e8e [2018-11-12 18:35:13,763 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 18:35:13,765 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 18:35:13,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 18:35:13,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 18:35:13,771 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 18:35:13,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:35:13" (1/1) ... [2018-11-12 18:35:13,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ff260c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:13, skipping insertion in model container [2018-11-12 18:35:13,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:35:13" (1/1) ... [2018-11-12 18:35:13,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 18:35:13,875 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 18:35:14,502 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:35:14,507 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 18:35:14,710 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:35:14,729 INFO L193 MainTranslator]: Completed translation [2018-11-12 18:35:14,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:14 WrapperNode [2018-11-12 18:35:14,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 18:35:14,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 18:35:14,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 18:35:14,731 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 18:35:14,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:14" (1/1) ... [2018-11-12 18:35:14,881 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:14" (1/1) ... [2018-11-12 18:35:14,898 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 18:35:14,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 18:35:14,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 18:35:14,898 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 18:35:14,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:14" (1/1) ... [2018-11-12 18:35:14,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:14" (1/1) ... [2018-11-12 18:35:14,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:14" (1/1) ... [2018-11-12 18:35:14,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:14" (1/1) ... [2018-11-12 18:35:14,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:14" (1/1) ... [2018-11-12 18:35:15,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:14" (1/1) ... [2018-11-12 18:35:15,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:14" (1/1) ... [2018-11-12 18:35:15,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 18:35:15,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 18:35:15,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 18:35:15,038 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 18:35:15,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:14" (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 18:35:15,110 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 18:35:15,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 18:35:15,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 18:35:15,110 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 18:35:15,111 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 18:35:15,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 18:35:15,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 18:35:15,112 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 18:35:15,112 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 18:35:20,525 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 18:35:20,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:35:20 BoogieIcfgContainer [2018-11-12 18:35:20,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 18:35:20,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 18:35:20,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 18:35:20,530 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 18:35:20,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 06:35:13" (1/3) ... [2018-11-12 18:35:20,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2feececa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:35:20, skipping insertion in model container [2018-11-12 18:35:20,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:35:14" (2/3) ... [2018-11-12 18:35:20,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2feececa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:35:20, skipping insertion in model container [2018-11-12 18:35:20,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:35:20" (3/3) ... [2018-11-12 18:35:20,535 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label09_true-unreach-call.c [2018-11-12 18:35:20,543 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 18:35:20,552 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 18:35:20,571 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 18:35:20,620 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 18:35:20,620 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 18:35:20,621 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 18:35:20,621 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 18:35:20,621 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 18:35:20,621 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 18:35:20,624 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 18:35:20,624 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 18:35:20,661 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-12 18:35:20,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-11-12 18:35:20,671 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:35:20,673 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:35:20,675 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:35:20,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:35:20,681 INFO L82 PathProgramCache]: Analyzing trace with hash -662645095, now seen corresponding path program 1 times [2018-11-12 18:35:20,684 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:35:20,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:35:20,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:35:20,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:35:20,731 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:35:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:35:21,329 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 18:35:21,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:35:21,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 18:35:21,332 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:35:21,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 18:35:21,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 18:35:21,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:35:21,361 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-12 18:35:24,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:35:24,820 INFO L93 Difference]: Finished difference Result 985 states and 1761 transitions. [2018-11-12 18:35:24,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 18:35:24,823 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2018-11-12 18:35:24,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:35:24,848 INFO L225 Difference]: With dead ends: 985 [2018-11-12 18:35:24,848 INFO L226 Difference]: Without dead ends: 686 [2018-11-12 18:35:24,859 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 18:35:24,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-11-12 18:35:24,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2018-11-12 18:35:24,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-11-12 18:35:24,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1046 transitions. [2018-11-12 18:35:24,987 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1046 transitions. Word has length 73 [2018-11-12 18:35:24,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:35:24,988 INFO L480 AbstractCegarLoop]: Abstraction has 686 states and 1046 transitions. [2018-11-12 18:35:24,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 18:35:24,988 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1046 transitions. [2018-11-12 18:35:24,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-11-12 18:35:24,999 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:35:25,000 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:35:25,000 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:35:25,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:35:25,001 INFO L82 PathProgramCache]: Analyzing trace with hash -2141432933, now seen corresponding path program 1 times [2018-11-12 18:35:25,001 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:35:25,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:35:25,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:35:25,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:35:25,003 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:35:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:35:25,348 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:35:25,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:35:25,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 18:35:25,349 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:35:25,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:35:25,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:35:25,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:35:25,352 INFO L87 Difference]: Start difference. First operand 686 states and 1046 transitions. Second operand 6 states. [2018-11-12 18:35:30,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:35:30,686 INFO L93 Difference]: Finished difference Result 2339 states and 3736 transitions. [2018-11-12 18:35:30,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:35:30,687 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-11-12 18:35:30,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:35:30,704 INFO L225 Difference]: With dead ends: 2339 [2018-11-12 18:35:30,704 INFO L226 Difference]: Without dead ends: 1659 [2018-11-12 18:35:30,710 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-12 18:35:30,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2018-11-12 18:35:30,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1642. [2018-11-12 18:35:30,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1642 states. [2018-11-12 18:35:30,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2356 transitions. [2018-11-12 18:35:30,805 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2356 transitions. Word has length 154 [2018-11-12 18:35:30,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:35:30,806 INFO L480 AbstractCegarLoop]: Abstraction has 1642 states and 2356 transitions. [2018-11-12 18:35:30,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:35:30,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2356 transitions. [2018-11-12 18:35:30,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-11-12 18:35:30,820 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:35:30,821 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:35:30,821 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:35:30,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:35:30,822 INFO L82 PathProgramCache]: Analyzing trace with hash -2008994851, now seen corresponding path program 1 times [2018-11-12 18:35:30,822 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:35:30,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:35:30,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:35:30,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:35:30,823 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:35:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:35:31,408 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 60 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:35:31,408 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:35:31,408 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:35:31,409 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 206 with the following transitions: [2018-11-12 18:35:31,412 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [485], [487], [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], [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 18:35:31,469 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:35:31,470 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:35:32,317 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:35:33,482 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:35:33,484 INFO L272 AbstractInterpreter]: Visited 139 different actions 404 times. Merged at 5 different actions 9 times. Never widened. Performed 6175 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6175 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 18:35:33,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:35:33,530 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:35:34,452 INFO L227 lantSequenceWeakener]: Weakened 202 states. On average, predicates are now at 74.04% of their original sizes. [2018-11-12 18:35:34,453 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:35:35,863 INFO L415 sIntCurrentIteration]: We unified 204 AI predicates to 204 [2018-11-12 18:35:35,864 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:35:35,865 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:35:35,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [8] total 19 [2018-11-12 18:35:35,865 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:35:35,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-12 18:35:35,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-12 18:35:35,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-11-12 18:35:35,867 INFO L87 Difference]: Start difference. First operand 1642 states and 2356 transitions. Second operand 13 states. [2018-11-12 18:36:00,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:36:00,364 INFO L93 Difference]: Finished difference Result 3863 states and 5540 transitions. [2018-11-12 18:36:00,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 18:36:00,365 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 205 [2018-11-12 18:36:00,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:36:00,377 INFO L225 Difference]: With dead ends: 3863 [2018-11-12 18:36:00,378 INFO L226 Difference]: Without dead ends: 2227 [2018-11-12 18:36:00,384 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 214 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2018-11-12 18:36:00,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2018-11-12 18:36:00,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 2221. [2018-11-12 18:36:00,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2221 states. [2018-11-12 18:36:00,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 2967 transitions. [2018-11-12 18:36:00,451 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 2967 transitions. Word has length 205 [2018-11-12 18:36:00,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:36:00,452 INFO L480 AbstractCegarLoop]: Abstraction has 2221 states and 2967 transitions. [2018-11-12 18:36:00,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-12 18:36:00,453 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 2967 transitions. [2018-11-12 18:36:00,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-11-12 18:36:00,460 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:36:00,460 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:36:00,461 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:36:00,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:00,461 INFO L82 PathProgramCache]: Analyzing trace with hash -473644349, now seen corresponding path program 1 times [2018-11-12 18:36:00,461 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:36:00,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:00,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:00,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:00,464 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:36:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-12 18:36:01,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:36:01,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 18:36:01,197 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:36:01,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 18:36:01,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 18:36:01,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:36:01,199 INFO L87 Difference]: Start difference. First operand 2221 states and 2967 transitions. Second operand 4 states. [2018-11-12 18:36:04,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:36:04,108 INFO L93 Difference]: Finished difference Result 7043 states and 10169 transitions. [2018-11-12 18:36:04,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 18:36:04,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 271 [2018-11-12 18:36:04,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:36:04,143 INFO L225 Difference]: With dead ends: 7043 [2018-11-12 18:36:04,143 INFO L226 Difference]: Without dead ends: 5021 [2018-11-12 18:36:04,159 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:36:04,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5021 states. [2018-11-12 18:36:04,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5021 to 4999. [2018-11-12 18:36:04,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4999 states. [2018-11-12 18:36:04,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4999 states to 4999 states and 6767 transitions. [2018-11-12 18:36:04,324 INFO L78 Accepts]: Start accepts. Automaton has 4999 states and 6767 transitions. Word has length 271 [2018-11-12 18:36:04,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:36:04,325 INFO L480 AbstractCegarLoop]: Abstraction has 4999 states and 6767 transitions. [2018-11-12 18:36:04,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 18:36:04,325 INFO L276 IsEmpty]: Start isEmpty. Operand 4999 states and 6767 transitions. [2018-11-12 18:36:04,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-11-12 18:36:04,343 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:36:04,344 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:36:04,344 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:36:04,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:04,344 INFO L82 PathProgramCache]: Analyzing trace with hash 240047288, now seen corresponding path program 1 times [2018-11-12 18:36:04,345 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:36:04,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:04,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:04,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:04,347 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:36:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:04,727 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-12 18:36:04,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:36:04,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 18:36:04,728 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:36:04,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 18:36:04,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 18:36:04,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:36:04,729 INFO L87 Difference]: Start difference. First operand 4999 states and 6767 transitions. Second operand 3 states. [2018-11-12 18:36:06,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:36:06,137 INFO L93 Difference]: Finished difference Result 11891 states and 16961 transitions. [2018-11-12 18:36:06,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 18:36:06,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 335 [2018-11-12 18:36:06,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:36:06,175 INFO L225 Difference]: With dead ends: 11891 [2018-11-12 18:36:06,175 INFO L226 Difference]: Without dead ends: 7472 [2018-11-12 18:36:06,208 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:36:06,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7472 states. [2018-11-12 18:36:06,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7472 to 6770. [2018-11-12 18:36:06,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6770 states. [2018-11-12 18:36:06,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6770 states to 6770 states and 8920 transitions. [2018-11-12 18:36:06,402 INFO L78 Accepts]: Start accepts. Automaton has 6770 states and 8920 transitions. Word has length 335 [2018-11-12 18:36:06,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:36:06,403 INFO L480 AbstractCegarLoop]: Abstraction has 6770 states and 8920 transitions. [2018-11-12 18:36:06,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 18:36:06,403 INFO L276 IsEmpty]: Start isEmpty. Operand 6770 states and 8920 transitions. [2018-11-12 18:36:06,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-11-12 18:36:06,433 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:36:06,433 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 18:36:06,434 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:36:06,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:06,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1200863698, now seen corresponding path program 1 times [2018-11-12 18:36:06,434 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:36:06,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:06,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:06,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:06,436 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:36:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:06,803 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 357 proven. 78 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-12 18:36:06,804 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:36:06,804 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:36:06,804 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 354 with the following transitions: [2018-11-12 18:36:06,804 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [485], [487], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [538], [539], [542], [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], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:36:06,810 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:36:06,810 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:36:07,011 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:36:08,227 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:36:08,227 INFO L272 AbstractInterpreter]: Visited 126 different actions 741 times. Merged at 7 different actions 40 times. Widened at 1 different actions 2 times. Performed 11404 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11404 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 6 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-12 18:36:08,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:08,267 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:36:08,891 INFO L227 lantSequenceWeakener]: Weakened 350 states. On average, predicates are now at 73.66% of their original sizes. [2018-11-12 18:36:08,892 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:36:09,242 INFO L415 sIntCurrentIteration]: We unified 352 AI predicates to 352 [2018-11-12 18:36:09,242 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:36:09,243 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:36:09,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-12 18:36:09,243 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:36:09,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:36:09,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:36:09,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:36:09,245 INFO L87 Difference]: Start difference. First operand 6770 states and 8920 transitions. Second operand 11 states. [2018-11-12 18:36:22,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:36:22,685 INFO L93 Difference]: Finished difference Result 14235 states and 18937 transitions. [2018-11-12 18:36:22,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 18:36:22,686 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 353 [2018-11-12 18:36:22,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:36:22,723 INFO L225 Difference]: With dead ends: 14235 [2018-11-12 18:36:22,724 INFO L226 Difference]: Without dead ends: 8045 [2018-11-12 18:36:22,746 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 362 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-11-12 18:36:22,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8045 states. [2018-11-12 18:36:22,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8045 to 7833. [2018-11-12 18:36:22,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7833 states. [2018-11-12 18:36:22,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7833 states to 7833 states and 10104 transitions. [2018-11-12 18:36:22,928 INFO L78 Accepts]: Start accepts. Automaton has 7833 states and 10104 transitions. Word has length 353 [2018-11-12 18:36:22,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:36:22,929 INFO L480 AbstractCegarLoop]: Abstraction has 7833 states and 10104 transitions. [2018-11-12 18:36:22,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:36:22,929 INFO L276 IsEmpty]: Start isEmpty. Operand 7833 states and 10104 transitions. [2018-11-12 18:36:22,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-11-12 18:36:22,963 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:36:22,963 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:36:22,964 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:36:22,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:22,964 INFO L82 PathProgramCache]: Analyzing trace with hash 679375550, now seen corresponding path program 1 times [2018-11-12 18:36:22,965 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:36:22,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:22,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:22,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:22,966 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:36:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:23,480 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-12 18:36:23,677 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-12 18:36:24,327 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 290 proven. 81 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-11-12 18:36:24,327 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:36:24,327 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:36:24,327 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 362 with the following transitions: [2018-11-12 18:36:24,328 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [485], [487], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [542], [543], [547], [551], [555], [559], [563], [567], [570], [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], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:36:24,332 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:36:24,332 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:36:24,432 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:36:25,250 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:36:25,250 INFO L272 AbstractInterpreter]: Visited 127 different actions 628 times. Merged at 8 different actions 40 times. Widened at 1 different actions 1 times. Performed 9284 root evaluator evaluations with a maximum evaluation depth of 6. Performed 9284 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 18:36:25,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:25,265 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:36:25,265 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:36:25,265 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 18:36:25,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:25,279 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:36:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:25,416 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:36:26,347 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 382 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 18:36:26,347 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:36:26,516 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2018-11-12 18:36:27,868 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 290 proven. 81 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-11-12 18:36:27,890 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:36:27,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 8] total 20 [2018-11-12 18:36:27,890 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:36:27,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-12 18:36:27,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-12 18:36:27,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2018-11-12 18:36:27,893 INFO L87 Difference]: Start difference. First operand 7833 states and 10104 transitions. Second operand 15 states. [2018-11-12 18:36:36,217 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2018-11-12 18:36:37,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:36:37,688 INFO L93 Difference]: Finished difference Result 21255 states and 30024 transitions. [2018-11-12 18:36:37,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-12 18:36:37,689 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 361 [2018-11-12 18:36:37,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:36:37,765 INFO L225 Difference]: With dead ends: 21255 [2018-11-12 18:36:37,765 INFO L226 Difference]: Without dead ends: 14002 [2018-11-12 18:36:37,808 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 748 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 969 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=934, Invalid=2848, Unknown=0, NotChecked=0, Total=3782 [2018-11-12 18:36:37,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14002 states. [2018-11-12 18:36:38,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14002 to 13621. [2018-11-12 18:36:38,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13621 states. [2018-11-12 18:36:38,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13621 states to 13621 states and 17990 transitions. [2018-11-12 18:36:38,145 INFO L78 Accepts]: Start accepts. Automaton has 13621 states and 17990 transitions. Word has length 361 [2018-11-12 18:36:38,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:36:38,146 INFO L480 AbstractCegarLoop]: Abstraction has 13621 states and 17990 transitions. [2018-11-12 18:36:38,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-12 18:36:38,146 INFO L276 IsEmpty]: Start isEmpty. Operand 13621 states and 17990 transitions. [2018-11-12 18:36:38,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-11-12 18:36:38,205 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:36:38,206 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 18:36:38,206 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:36:38,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:38,207 INFO L82 PathProgramCache]: Analyzing trace with hash -946390026, now seen corresponding path program 1 times [2018-11-12 18:36:38,207 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:36:38,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:38,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:38,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:38,208 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:36:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:38,852 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 363 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-12 18:36:38,852 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:36:38,852 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:36:38,852 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 378 with the following transitions: [2018-11-12 18:36:38,853 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [485], [487], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [542], [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 18:36:38,856 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:36:38,857 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:36:38,921 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:36:39,588 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:36:39,588 INFO L272 AbstractInterpreter]: Visited 136 different actions 395 times. Merged at 5 different actions 9 times. Never widened. Performed 5109 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5109 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 18:36:39,591 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:39,592 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:36:40,143 INFO L227 lantSequenceWeakener]: Weakened 374 states. On average, predicates are now at 73.62% of their original sizes. [2018-11-12 18:36:40,143 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:36:40,548 INFO L415 sIntCurrentIteration]: We unified 376 AI predicates to 376 [2018-11-12 18:36:40,548 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:36:40,549 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:36:40,549 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-12 18:36:40,549 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:36:40,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:36:40,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:36:40,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:36:40,550 INFO L87 Difference]: Start difference. First operand 13621 states and 17990 transitions. Second operand 11 states. [2018-11-12 18:36:50,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:36:50,104 INFO L93 Difference]: Finished difference Result 26871 states and 35703 transitions. [2018-11-12 18:36:50,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 18:36:50,105 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 377 [2018-11-12 18:36:50,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:36:50,165 INFO L225 Difference]: With dead ends: 26871 [2018-11-12 18:36:50,165 INFO L226 Difference]: Without dead ends: 14211 [2018-11-12 18:36:50,192 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 386 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-11-12 18:36:50,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14211 states. [2018-11-12 18:36:50,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14211 to 14201. [2018-11-12 18:36:50,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14201 states. [2018-11-12 18:36:50,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14201 states to 14201 states and 18667 transitions. [2018-11-12 18:36:50,456 INFO L78 Accepts]: Start accepts. Automaton has 14201 states and 18667 transitions. Word has length 377 [2018-11-12 18:36:50,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:36:50,456 INFO L480 AbstractCegarLoop]: Abstraction has 14201 states and 18667 transitions. [2018-11-12 18:36:50,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:36:50,457 INFO L276 IsEmpty]: Start isEmpty. Operand 14201 states and 18667 transitions. [2018-11-12 18:36:50,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-11-12 18:36:50,513 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:36:50,513 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:36:50,513 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:36:50,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:50,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1727005641, now seen corresponding path program 1 times [2018-11-12 18:36:50,514 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:36:50,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:50,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:36:50,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:36:50,515 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:36:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:36:51,188 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 363 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-12 18:36:51,188 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:36:51,188 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:36:51,189 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 399 with the following transitions: [2018-11-12 18:36:51,189 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [485], [487], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [542], [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 18:36:51,193 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:36:51,194 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:36:51,273 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:36:52,063 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:36:52,063 INFO L272 AbstractInterpreter]: Visited 157 different actions 458 times. Merged at 5 different actions 9 times. Never widened. Performed 8782 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8782 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 18:36:52,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:36:52,089 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:36:53,307 INFO L227 lantSequenceWeakener]: Weakened 60 states. On average, predicates are now at 73.53% of their original sizes. [2018-11-12 18:36:53,307 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:36:53,590 INFO L415 sIntCurrentIteration]: We unified 397 AI predicates to 397 [2018-11-12 18:36:53,590 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:36:53,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:36:53,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-11-12 18:36:53,591 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:36:53,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-12 18:36:53,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-12 18:36:53,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-11-12 18:36:53,593 INFO L87 Difference]: Start difference. First operand 14201 states and 18667 transitions. Second operand 15 states. [2018-11-12 18:37:13,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:37:13,522 INFO L93 Difference]: Finished difference Result 28603 states and 37751 transitions. [2018-11-12 18:37:13,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-12 18:37:13,522 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 398 [2018-11-12 18:37:13,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:37:13,574 INFO L225 Difference]: With dead ends: 28603 [2018-11-12 18:37:13,575 INFO L226 Difference]: Without dead ends: 15363 [2018-11-12 18:37:13,603 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 407 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2018-11-12 18:37:13,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15363 states. [2018-11-12 18:37:13,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15363 to 15159. [2018-11-12 18:37:13,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15159 states. [2018-11-12 18:37:13,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15159 states to 15159 states and 19719 transitions. [2018-11-12 18:37:13,865 INFO L78 Accepts]: Start accepts. Automaton has 15159 states and 19719 transitions. Word has length 398 [2018-11-12 18:37:13,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:37:13,866 INFO L480 AbstractCegarLoop]: Abstraction has 15159 states and 19719 transitions. [2018-11-12 18:37:13,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-12 18:37:13,866 INFO L276 IsEmpty]: Start isEmpty. Operand 15159 states and 19719 transitions. [2018-11-12 18:37:13,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-11-12 18:37:13,900 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:37:13,901 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:37:13,901 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:37:13,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:37:13,902 INFO L82 PathProgramCache]: Analyzing trace with hash -2093495330, now seen corresponding path program 1 times [2018-11-12 18:37:13,902 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:37:13,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:37:13,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:37:13,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:37:13,903 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:37:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:37:14,703 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 357 proven. 78 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-12 18:37:14,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:37:14,704 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:37:14,704 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 423 with the following transitions: [2018-11-12 18:37:14,704 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [485], [487], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [538], [539], [542], [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], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [971], [975], [979], [983], [987], [991], [1002], [1013], [1017], [1021], [1032], [1036], [1040], [1044], [1055], [1059], [1063], [1067], [1070], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:37:14,709 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:37:14,709 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:37:14,908 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:37:15,795 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:37:15,795 INFO L272 AbstractInterpreter]: Visited 195 different actions 771 times. Merged at 7 different actions 24 times. Never widened. Performed 12593 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12593 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 18:37:15,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:37:15,803 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:37:16,281 INFO L227 lantSequenceWeakener]: Weakened 419 states. On average, predicates are now at 73.56% of their original sizes. [2018-11-12 18:37:16,281 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:37:16,627 INFO L415 sIntCurrentIteration]: We unified 421 AI predicates to 421 [2018-11-12 18:37:16,627 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:37:16,627 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:37:16,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-12 18:37:16,627 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:37:16,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 18:37:16,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 18:37:16,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-12 18:37:16,629 INFO L87 Difference]: Start difference. First operand 15159 states and 19719 transitions. Second operand 10 states. [2018-11-12 18:37:30,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:37:30,123 INFO L93 Difference]: Finished difference Result 31327 states and 41308 transitions. [2018-11-12 18:37:30,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-12 18:37:30,123 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 422 [2018-11-12 18:37:30,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:37:30,164 INFO L225 Difference]: With dead ends: 31327 [2018-11-12 18:37:30,164 INFO L226 Difference]: Without dead ends: 18667 [2018-11-12 18:37:30,189 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 428 GetRequests, 352 SyntacticMatches, 61 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-11-12 18:37:30,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18667 states. [2018-11-12 18:37:30,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18667 to 18605. [2018-11-12 18:37:30,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18605 states. [2018-11-12 18:37:30,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18605 states to 18605 states and 23821 transitions. [2018-11-12 18:37:30,481 INFO L78 Accepts]: Start accepts. Automaton has 18605 states and 23821 transitions. Word has length 422 [2018-11-12 18:37:30,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:37:30,482 INFO L480 AbstractCegarLoop]: Abstraction has 18605 states and 23821 transitions. [2018-11-12 18:37:30,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 18:37:30,482 INFO L276 IsEmpty]: Start isEmpty. Operand 18605 states and 23821 transitions. [2018-11-12 18:37:30,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2018-11-12 18:37:30,518 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:37:30,518 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:37:30,519 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:37:30,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:37:30,519 INFO L82 PathProgramCache]: Analyzing trace with hash -707039990, now seen corresponding path program 1 times [2018-11-12 18:37:30,519 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:37:30,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:37:30,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:37:30,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:37:30,521 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:37:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:37:31,804 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 363 proven. 2 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-11-12 18:37:31,805 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:37:31,805 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:37:31,805 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 428 with the following transitions: [2018-11-12 18:37:31,806 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [485], [487], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [542], [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], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [823], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:37:31,809 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:37:31,809 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:37:31,904 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:37:32,784 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:37:32,784 INFO L272 AbstractInterpreter]: Visited 152 different actions 750 times. Merged at 8 different actions 36 times. Never widened. Performed 12146 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12146 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 9 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-12 18:37:32,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:37:32,793 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:37:32,793 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:37:32,793 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 18:37:32,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:37:32,802 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:37:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:37:32,929 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:37:33,026 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 363 proven. 2 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-11-12 18:37:33,027 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:37:33,379 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 363 proven. 2 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-11-12 18:37:33,400 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:37:33,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-11-12 18:37:33,400 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:37:33,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:37:33,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:37:33,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-12 18:37:33,401 INFO L87 Difference]: Start difference. First operand 18605 states and 23821 transitions. Second operand 6 states. [2018-11-12 18:37:34,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:37:34,982 INFO L93 Difference]: Finished difference Result 33476 states and 45770 transitions. [2018-11-12 18:37:34,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:37:34,983 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 427 [2018-11-12 18:37:34,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:37:35,053 INFO L225 Difference]: With dead ends: 33476 [2018-11-12 18:37:35,053 INFO L226 Difference]: Without dead ends: 20816 [2018-11-12 18:37:35,087 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 865 GetRequests, 855 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-11-12 18:37:35,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20816 states. [2018-11-12 18:37:35,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20816 to 20565. [2018-11-12 18:37:35,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20565 states. [2018-11-12 18:37:35,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20565 states to 20565 states and 25857 transitions. [2018-11-12 18:37:35,448 INFO L78 Accepts]: Start accepts. Automaton has 20565 states and 25857 transitions. Word has length 427 [2018-11-12 18:37:35,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:37:35,449 INFO L480 AbstractCegarLoop]: Abstraction has 20565 states and 25857 transitions. [2018-11-12 18:37:35,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:37:35,449 INFO L276 IsEmpty]: Start isEmpty. Operand 20565 states and 25857 transitions. [2018-11-12 18:37:35,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2018-11-12 18:37:35,501 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:37:35,501 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 18:37:35,502 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:37:35,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:37:35,502 INFO L82 PathProgramCache]: Analyzing trace with hash 359078114, now seen corresponding path program 1 times [2018-11-12 18:37:35,502 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:37:35,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:37:35,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:37:35,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:37:35,503 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:37:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:37:37,507 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 433 proven. 78 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2018-11-12 18:37:37,507 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:37:37,507 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:37:37,507 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 506 with the following transitions: [2018-11-12 18:37:37,508 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [485], [487], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [530], [531], [535], [539], [542], [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], [777], [781], [785], [789], [793], [797], [808], [812], [816], [819], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:37:37,511 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:37:37,511 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:37:37,634 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:37:39,044 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:37:39,044 INFO L272 AbstractInterpreter]: Visited 152 different actions 1053 times. Merged at 8 different actions 57 times. Widened at 1 different actions 2 times. Performed 17371 root evaluator evaluations with a maximum evaluation depth of 6. Performed 17371 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 13 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-12 18:37:39,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:37:39,052 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:37:39,052 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:37:39,052 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 18:37:39,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:37:39,062 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:37:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:37:39,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:37:39,411 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 599 proven. 2 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2018-11-12 18:37:39,412 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:37:39,625 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 433 proven. 78 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2018-11-12 18:37:39,647 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:37:39,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2018-11-12 18:37:39,647 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:37:39,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 18:37:39,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 18:37:39,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-11-12 18:37:39,649 INFO L87 Difference]: Start difference. First operand 20565 states and 25857 transitions. Second operand 9 states. [2018-11-12 18:37:43,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:37:43,629 INFO L93 Difference]: Finished difference Result 38390 states and 52775 transitions. [2018-11-12 18:37:43,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-12 18:37:43,629 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 505 [2018-11-12 18:37:43,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:37:43,758 INFO L225 Difference]: With dead ends: 38390 [2018-11-12 18:37:43,758 INFO L226 Difference]: Without dead ends: 23383 [2018-11-12 18:37:43,829 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1027 GetRequests, 1011 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2018-11-12 18:37:43,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23383 states. [2018-11-12 18:37:44,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23383 to 22861. [2018-11-12 18:37:44,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22861 states. [2018-11-12 18:37:44,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22861 states to 22861 states and 30209 transitions. [2018-11-12 18:37:44,363 INFO L78 Accepts]: Start accepts. Automaton has 22861 states and 30209 transitions. Word has length 505 [2018-11-12 18:37:44,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:37:44,363 INFO L480 AbstractCegarLoop]: Abstraction has 22861 states and 30209 transitions. [2018-11-12 18:37:44,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 18:37:44,364 INFO L276 IsEmpty]: Start isEmpty. Operand 22861 states and 30209 transitions. [2018-11-12 18:37:44,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2018-11-12 18:37:44,440 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:37:44,441 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 18:37:44,441 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:37:44,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:37:44,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1768182149, now seen corresponding path program 1 times [2018-11-12 18:37:44,441 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:37:44,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:37:44,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:37:44,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:37:44,443 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:37:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:37:44,845 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2018-11-12 18:37:44,845 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:37:44,845 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:37:44,846 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 508 with the following transitions: [2018-11-12 18:37:44,846 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [485], [487], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [542], [543], [547], [551], [555], [559], [562], [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], [750], [751], [762], [766], [777], [781], [785], [789], [793], [797], [800], [805], [807], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:37:44,848 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:37:44,849 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:37:44,931 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:37:45,812 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:37:45,812 INFO L272 AbstractInterpreter]: Visited 148 different actions 732 times. Merged at 8 different actions 41 times. Widened at 1 different actions 1 times. Performed 11431 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11431 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 18:37:45,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:37:45,820 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:37:45,820 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:37:45,820 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 18:37:45,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:37:45,829 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:37:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:37:45,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:37:46,298 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 447 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2018-11-12 18:37:46,298 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:37:46,802 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2018-11-12 18:37:46,833 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-12 18:37:46,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 3 [2018-11-12 18:37:46,834 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:37:46,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 18:37:46,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 18:37:46,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:37:46,839 INFO L87 Difference]: Start difference. First operand 22861 states and 30209 transitions. Second operand 3 states. [2018-11-12 18:37:48,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:37:48,423 INFO L93 Difference]: Finished difference Result 48472 states and 66908 transitions. [2018-11-12 18:37:48,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 18:37:48,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 507 [2018-11-12 18:37:48,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:37:48,498 INFO L225 Difference]: With dead ends: 48472 [2018-11-12 18:37:48,498 INFO L226 Difference]: Without dead ends: 22577 [2018-11-12 18:37:48,603 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1016 GetRequests, 1015 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:37:48,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22577 states. [2018-11-12 18:37:49,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22577 to 22349. [2018-11-12 18:37:49,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22349 states. [2018-11-12 18:37:49,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22349 states to 22349 states and 28096 transitions. [2018-11-12 18:37:49,106 INFO L78 Accepts]: Start accepts. Automaton has 22349 states and 28096 transitions. Word has length 507 [2018-11-12 18:37:49,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:37:49,107 INFO L480 AbstractCegarLoop]: Abstraction has 22349 states and 28096 transitions. [2018-11-12 18:37:49,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 18:37:49,107 INFO L276 IsEmpty]: Start isEmpty. Operand 22349 states and 28096 transitions. [2018-11-12 18:37:49,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2018-11-12 18:37:49,189 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:37:49,189 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:37:49,190 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:37:49,190 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:37:49,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1175963926, now seen corresponding path program 1 times [2018-11-12 18:37:49,190 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:37:49,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:37:49,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:37:49,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:37:49,191 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:37:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:37:50,044 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 285 proven. 466 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-11-12 18:37:50,045 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:37:50,045 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:37:50,045 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 575 with the following transitions: [2018-11-12 18:37:50,046 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [485], [487], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [542], [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], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [963], [968], [970], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:37:50,049 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:37:50,049 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:37:50,120 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:37:51,919 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:37:51,919 INFO L272 AbstractInterpreter]: Visited 183 different actions 1280 times. Merged at 9 different actions 72 times. Widened at 1 different actions 2 times. Performed 20703 root evaluator evaluations with a maximum evaluation depth of 6. Performed 20703 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 18 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-12 18:37:51,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:37:51,926 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:37:51,926 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:37:51,926 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 18:37:51,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:37:51,936 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:37:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:37:52,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:37:52,385 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 456 proven. 4 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-11-12 18:37:52,385 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:37:53,278 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 287 proven. 468 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-11-12 18:37:53,299 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:37:53,299 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 15 [2018-11-12 18:37:53,300 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:37:53,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 18:37:53,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 18:37:53,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2018-11-12 18:37:53,301 INFO L87 Difference]: Start difference. First operand 22349 states and 28096 transitions. Second operand 10 states. [2018-11-12 18:37:58,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:37:58,349 INFO L93 Difference]: Finished difference Result 55111 states and 78662 transitions. [2018-11-12 18:37:58,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 18:37:58,349 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 574 [2018-11-12 18:37:58,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:37:58,618 INFO L225 Difference]: With dead ends: 55111 [2018-11-12 18:37:58,618 INFO L226 Difference]: Without dead ends: 38950 [2018-11-12 18:37:58,753 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1181 GetRequests, 1154 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=197, Invalid=453, Unknown=0, NotChecked=0, Total=650 [2018-11-12 18:37:58,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38950 states. [2018-11-12 18:37:59,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38950 to 37727. [2018-11-12 18:37:59,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37727 states. [2018-11-12 18:37:59,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37727 states to 37727 states and 51143 transitions. [2018-11-12 18:37:59,842 INFO L78 Accepts]: Start accepts. Automaton has 37727 states and 51143 transitions. Word has length 574 [2018-11-12 18:37:59,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:37:59,842 INFO L480 AbstractCegarLoop]: Abstraction has 37727 states and 51143 transitions. [2018-11-12 18:37:59,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 18:37:59,842 INFO L276 IsEmpty]: Start isEmpty. Operand 37727 states and 51143 transitions. [2018-11-12 18:38:00,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2018-11-12 18:38:00,049 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:38:00,050 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:38:00,050 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:38:00,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:38:00,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1062880069, now seen corresponding path program 1 times [2018-11-12 18:38:00,050 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:38:00,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:38:00,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:38:00,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:38:00,051 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:38:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:38:00,726 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-12 18:38:00,907 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-12 18:38:02,762 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 479 proven. 302 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2018-11-12 18:38:02,762 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:38:02,762 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:38:02,762 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 646 with the following transitions: [2018-11-12 18:38:02,763 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [485], [487], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [542], [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], [777], [781], [785], [789], [792], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [963], [968], [970], [971], [975], [979], [983], [987], [991], [1002], [1013], [1017], [1021], [1032], [1036], [1040], [1044], [1055], [1059], [1063], [1067], [1070], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:38:02,766 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:38:02,766 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:38:02,894 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:38:04,029 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:38:04,029 INFO L272 AbstractInterpreter]: Visited 199 different actions 992 times. Merged at 9 different actions 48 times. Widened at 1 different actions 1 times. Performed 16652 root evaluator evaluations with a maximum evaluation depth of 6. Performed 16652 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 11 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-12 18:38:04,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:38:04,215 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:38:04,215 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:38:04,215 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 18:38:04,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:38:04,227 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:38:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:38:04,409 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:38:05,088 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 456 proven. 4 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2018-11-12 18:38:05,088 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:38:05,920 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 287 proven. 523 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-11-12 18:38:05,940 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:38:05,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 7, 8] total 34 [2018-11-12 18:38:05,940 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:38:05,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-11-12 18:38:05,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-11-12 18:38:05,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2018-11-12 18:38:05,943 INFO L87 Difference]: Start difference. First operand 37727 states and 51143 transitions. Second operand 29 states. [2018-11-12 18:38:07,094 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2018-11-12 18:38:07,997 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2018-11-12 18:38:09,605 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-11-12 18:38:10,025 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2018-11-12 18:38:14,073 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-11-12 18:38:15,932 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2018-11-12 18:38:18,258 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2018-11-12 18:38:20,370 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2018-11-12 18:38:22,147 WARN L179 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2018-11-12 18:38:23,574 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2018-11-12 18:38:24,859 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2018-11-12 18:38:25,460 WARN L179 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2018-11-12 18:38:26,777 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2018-11-12 18:38:28,962 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2018-11-12 18:38:32,875 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2018-11-12 18:38:33,485 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2018-11-12 18:38:33,800 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2018-11-12 18:38:35,649 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-11-12 18:38:35,962 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2018-11-12 18:38:36,407 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2018-11-12 18:38:37,875 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2018-11-12 18:38:41,864 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2018-11-12 18:38:42,150 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2018-11-12 18:38:43,238 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2018-11-12 18:38:43,422 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-11-12 18:38:44,830 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2018-11-12 18:38:44,978 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 Received shutdown request... [2018-11-12 18:38:47,528 WARN L187 SmtUtils]: Removed 9 from assertion stack [2018-11-12 18:38:47,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-11-12 18:38:47,529 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 18:38:47,533 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 18:38:47,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 06:38:47 BoogieIcfgContainer [2018-11-12 18:38:47,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 18:38:47,535 INFO L168 Benchmark]: Toolchain (without parser) took 213770.85 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-12 18:38:47,535 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 18:38:47,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 963.88 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 18:38:47,536 INFO L168 Benchmark]: Boogie Procedure Inliner took 167.08 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -845.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2018-11-12 18:38:47,537 INFO L168 Benchmark]: Boogie Preprocessor took 139.34 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 18:38:47,538 INFO L168 Benchmark]: RCFGBuilder took 5487.95 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: 185.6 MB). Peak memory consumption was 185.6 MB. Max. memory is 7.1 GB. [2018-11-12 18:38:47,539 INFO L168 Benchmark]: TraceAbstraction took 207007.18 ms. Allocated memory was 2.3 GB in the beginning and 4.5 GB in the end (delta: 2.3 GB). Free memory was 2.0 GB in the beginning and 3.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-12 18:38:47,543 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 963.88 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 167.08 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -845.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.34 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 5487.95 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: 185.6 MB). Peak memory consumption was 185.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207007.18 ms. Allocated memory was 2.3 GB in the beginning and 4.5 GB in the end (delta: 2.3 GB). Free memory was 2.0 GB in the beginning and 3.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 204]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 204). Cancelled while BasicCegarLoop was constructing difference of abstraction (37727states) and FLOYD_HOARE automaton (currently 179 states, 29 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 48. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 206.9s OverallTime, 15 OverallIterations, 5 TraceHistogramMax, 159.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3559 SDtfs, 31017 SDslu, 5129 SDs, 0 SdLazy, 49892 SolverSat, 8733 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 71.3s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 8242 GetRequests, 7743 SyntacticMatches, 73 SemanticMatches, 425 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19388 ImplicationChecksByTransitivity, 28.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37727occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.0s AbstIntTime, 11 AbstIntIterations, 5 AbstIntStrong, 0.9978203581603599 AbsIntWeakeningRatio, 0.09085714285714286 AbsIntAvgWeakeningVarsNumRemoved, 22.75657142857143 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 3840 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 14.5s InterpolantComputationTime, 8626 NumberOfCodeBlocks, 8626 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 11618 ConstructedInterpolants, 0 QuantifiedInterpolants, 21894740 SizeOfPredicates, 11 NumberOfNonLiveVariables, 4681 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 27 InterpolantComputations, 5 PerfectInterpolantSequences, 13234/15499 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown