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_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:06:34,155 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:06:34,160 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:06:34,177 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:06:34,177 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:06:34,178 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:06:34,180 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:06:34,181 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:06:34,183 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:06:34,184 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:06:34,185 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:06:34,185 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:06:34,186 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:06:34,187 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:06:34,188 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:06:34,189 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:06:34,190 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:06:34,194 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:06:34,196 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:06:34,197 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:06:34,198 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:06:34,203 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:06:34,209 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:06:34,209 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:06:34,209 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:06:34,210 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:06:34,211 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:06:34,212 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:06:34,212 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:06:34,213 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:06:34,214 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:06:34,214 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:06:34,214 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:06:34,215 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:06:34,216 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:06:34,216 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:06:34,217 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 20:06:34,234 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:06:34,235 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:06:34,235 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:06:34,236 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:06:34,236 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:06:34,236 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:06:34,236 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:06:34,236 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:06:34,237 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:06:34,237 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:06:34,237 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:06:34,237 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:06:34,237 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:06:34,238 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:06:34,238 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:06:34,238 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:06:34,239 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:06:34,239 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:06:34,239 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:06:34,239 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:06:34,239 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:06:34,240 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:06:34,240 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:06:34,240 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:06:34,240 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:06:34,240 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:06:34,241 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:06:34,241 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:06:34,241 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:06:34,241 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:06:34,242 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:06:34,242 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:06:34,242 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:06:34,242 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:06:34,242 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:06:34,291 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:06:34,303 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:06:34,307 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:06:34,308 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:06:34,309 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:06:34,309 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label11_true-unreach-call.c [2018-11-07 20:06:34,366 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2d6847a5/bd9e9bc1bcd14acf9ec96938b33f512a/FLAGb800900f7 [2018-11-07 20:06:34,966 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:06:34,968 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label11_true-unreach-call.c [2018-11-07 20:06:34,986 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2d6847a5/bd9e9bc1bcd14acf9ec96938b33f512a/FLAGb800900f7 [2018-11-07 20:06:35,006 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2d6847a5/bd9e9bc1bcd14acf9ec96938b33f512a [2018-11-07 20:06:35,018 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:06:35,020 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:06:35,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:06:35,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:06:35,026 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:06:35,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:06:35" (1/1) ... [2018-11-07 20:06:35,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed00cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:35, skipping insertion in model container [2018-11-07 20:06:35,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:06:35" (1/1) ... [2018-11-07 20:06:35,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:06:35,139 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:06:35,810 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:06:35,816 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:06:36,048 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:06:36,068 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:06:36,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:36 WrapperNode [2018-11-07 20:06:36,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:06:36,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:06:36,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:06:36,070 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:06:36,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:36" (1/1) ... [2018-11-07 20:06:36,229 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:36" (1/1) ... [2018-11-07 20:06:36,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:06:36,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:06:36,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:06:36,245 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:06:36,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:36" (1/1) ... [2018-11-07 20:06:36,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:36" (1/1) ... [2018-11-07 20:06:36,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:36" (1/1) ... [2018-11-07 20:06:36,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:36" (1/1) ... [2018-11-07 20:06:36,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:36" (1/1) ... [2018-11-07 20:06:36,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:36" (1/1) ... [2018-11-07 20:06:36,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:36" (1/1) ... [2018-11-07 20:06:36,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:06:36,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:06:36,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:06:36,373 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:06:36,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:06:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:06:36,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:06:36,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:06:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:06:36,448 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:06:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:06:36,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:06:36,448 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:06:36,448 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:06:40,782 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:06:40,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:06:40 BoogieIcfgContainer [2018-11-07 20:06:40,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:06:40,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:06:40,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:06:40,788 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:06:40,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:06:35" (1/3) ... [2018-11-07 20:06:40,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ea4bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:06:40, skipping insertion in model container [2018-11-07 20:06:40,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:36" (2/3) ... [2018-11-07 20:06:40,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ea4bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:06:40, skipping insertion in model container [2018-11-07 20:06:40,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:06:40" (3/3) ... [2018-11-07 20:06:40,792 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label11_true-unreach-call.c [2018-11-07 20:06:40,803 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:06:40,812 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:06:40,830 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:06:40,870 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:06:40,870 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:06:40,870 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:06:40,870 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:06:40,871 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:06:40,871 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:06:40,871 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:06:40,871 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:06:40,901 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 20:06:40,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-07 20:06:40,912 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:06:40,913 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] [2018-11-07 20:06:40,916 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:06:40,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:06:40,923 INFO L82 PathProgramCache]: Analyzing trace with hash 586215740, now seen corresponding path program 1 times [2018-11-07 20:06:40,926 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:06:40,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:06:40,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:06:40,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:06:40,982 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:06:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:06:41,431 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:06:41,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:06:41,474 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:06:41,474 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:06:41,474 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:06:41,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:06:41,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:06:41,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:06:41,499 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-11-07 20:06:43,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:06:43,875 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-11-07 20:06:43,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:06:43,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2018-11-07 20:06:43,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:06:43,900 INFO L225 Difference]: With dead ends: 782 [2018-11-07 20:06:43,900 INFO L226 Difference]: Without dead ends: 487 [2018-11-07 20:06:43,909 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:06:43,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-11-07 20:06:43,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-11-07 20:06:43,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-11-07 20:06:44,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 843 transitions. [2018-11-07 20:06:44,005 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 843 transitions. Word has length 68 [2018-11-07 20:06:44,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:06:44,006 INFO L480 AbstractCegarLoop]: Abstraction has 482 states and 843 transitions. [2018-11-07 20:06:44,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:06:44,006 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 843 transitions. [2018-11-07 20:06:44,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-07 20:06:44,018 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:06:44,019 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:06:44,019 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:06:44,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:06:44,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1561490343, now seen corresponding path program 1 times [2018-11-07 20:06:44,020 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:06:44,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:06:44,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:06:44,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:06:44,022 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:06:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:06:44,629 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:06:44,629 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:06:44,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 20:06:44,630 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:06:44,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 20:06:44,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 20:06:44,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 20:06:44,633 INFO L87 Difference]: Start difference. First operand 482 states and 843 transitions. Second operand 7 states. [2018-11-07 20:06:50,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:06:50,719 INFO L93 Difference]: Finished difference Result 1760 states and 3239 transitions. [2018-11-07 20:06:50,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 20:06:50,720 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2018-11-07 20:06:50,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:06:50,740 INFO L225 Difference]: With dead ends: 1760 [2018-11-07 20:06:50,740 INFO L226 Difference]: Without dead ends: 1284 [2018-11-07 20:06:50,746 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-07 20:06:50,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2018-11-07 20:06:50,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1037. [2018-11-07 20:06:50,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-11-07 20:06:50,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1685 transitions. [2018-11-07 20:06:50,833 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1685 transitions. Word has length 143 [2018-11-07 20:06:50,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:06:50,833 INFO L480 AbstractCegarLoop]: Abstraction has 1037 states and 1685 transitions. [2018-11-07 20:06:50,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 20:06:50,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1685 transitions. [2018-11-07 20:06:50,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-11-07 20:06:50,846 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:06:50,847 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:06:50,847 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:06:50,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:06:50,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1636025592, now seen corresponding path program 1 times [2018-11-07 20:06:50,848 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:06:50,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:06:50,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:06:50,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:06:50,849 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:06:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:06:51,112 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 122 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:06:51,112 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:06:51,112 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:06:51,114 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 217 with the following transitions: [2018-11-07 20:06:51,116 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], [445], [447], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:06:51,162 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:06:51,162 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:06:51,703 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:06:51,708 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 20:06:51,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:06:51,774 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:06:52,356 INFO L227 lantSequenceWeakener]: Weakened 207 states. On average, predicates are now at 73.86% of their original sizes. [2018-11-07 20:06:52,356 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:06:52,517 INFO L415 sIntCurrentIteration]: We unified 215 AI predicates to 215 [2018-11-07 20:06:52,517 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:06:52,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:06:52,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 20:06:52,518 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:06:52,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 20:06:52,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 20:06:52,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 20:06:52,520 INFO L87 Difference]: Start difference. First operand 1037 states and 1685 transitions. Second operand 7 states. [2018-11-07 20:06:57,212 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:07:14,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:07:14,082 INFO L93 Difference]: Finished difference Result 2260 states and 3574 transitions. [2018-11-07 20:07:14,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:07:14,082 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2018-11-07 20:07:14,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:07:14,089 INFO L225 Difference]: With dead ends: 2260 [2018-11-07 20:07:14,089 INFO L226 Difference]: Without dead ends: 1229 [2018-11-07 20:07:14,092 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 216 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:07:14,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2018-11-07 20:07:14,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1227. [2018-11-07 20:07:14,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2018-11-07 20:07:14,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1883 transitions. [2018-11-07 20:07:14,128 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1883 transitions. Word has length 216 [2018-11-07 20:07:14,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:07:14,128 INFO L480 AbstractCegarLoop]: Abstraction has 1227 states and 1883 transitions. [2018-11-07 20:07:14,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 20:07:14,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1883 transitions. [2018-11-07 20:07:14,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-11-07 20:07:14,135 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:07:14,135 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:07:14,136 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:07:14,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:07:14,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1687745886, now seen corresponding path program 1 times [2018-11-07 20:07:14,137 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:07:14,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:07:14,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:07:14,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:07:14,139 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:07:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:07:14,582 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 20:07:14,583 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:07:14,583 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:07:14,583 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 261 with the following transitions: [2018-11-07 20:07:14,584 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], [445], [447], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [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], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:07:14,592 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:07:14,593 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:07:14,699 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:07:14,851 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:07:14,851 INFO L272 AbstractInterpreter]: Visited 125 different actions 244 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 20:07:14,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:07:14,891 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:07:15,285 INFO L227 lantSequenceWeakener]: Weakened 257 states. On average, predicates are now at 73.75% of their original sizes. [2018-11-07 20:07:15,285 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:07:15,868 INFO L415 sIntCurrentIteration]: We unified 259 AI predicates to 259 [2018-11-07 20:07:15,870 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:07:15,870 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:07:15,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2018-11-07 20:07:15,870 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:07:15,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:07:15,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:07:15,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:07:15,872 INFO L87 Difference]: Start difference. First operand 1227 states and 1883 transitions. Second operand 11 states. [2018-11-07 20:07:32,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:07:32,580 INFO L93 Difference]: Finished difference Result 2453 states and 3929 transitions. [2018-11-07 20:07:32,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 20:07:32,580 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 260 [2018-11-07 20:07:32,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:07:32,589 INFO L225 Difference]: With dead ends: 2453 [2018-11-07 20:07:32,589 INFO L226 Difference]: Without dead ends: 1422 [2018-11-07 20:07:32,593 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 268 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-11-07 20:07:32,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2018-11-07 20:07:32,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1418. [2018-11-07 20:07:32,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1418 states. [2018-11-07 20:07:32,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 2090 transitions. [2018-11-07 20:07:32,628 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 2090 transitions. Word has length 260 [2018-11-07 20:07:32,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:07:32,629 INFO L480 AbstractCegarLoop]: Abstraction has 1418 states and 2090 transitions. [2018-11-07 20:07:32,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 20:07:32,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 2090 transitions. [2018-11-07 20:07:32,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-11-07 20:07:32,634 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:07:32,634 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:07:32,635 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:07:32,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:07:32,635 INFO L82 PathProgramCache]: Analyzing trace with hash 629945386, now seen corresponding path program 1 times [2018-11-07 20:07:32,635 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:07:32,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:07:32,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:07:32,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:07:32,637 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:07:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:07:33,021 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-07 20:07:33,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:07:33,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:07:33,022 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:07:33,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:07:33,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:07:33,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:07:33,023 INFO L87 Difference]: Start difference. First operand 1418 states and 2090 transitions. Second operand 4 states. [2018-11-07 20:07:35,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:07:35,270 INFO L93 Difference]: Finished difference Result 3922 states and 6509 transitions. [2018-11-07 20:07:35,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:07:35,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 270 [2018-11-07 20:07:35,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:07:35,289 INFO L225 Difference]: With dead ends: 3922 [2018-11-07 20:07:35,289 INFO L226 Difference]: Without dead ends: 2891 [2018-11-07 20:07:35,296 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 [2018-11-07 20:07:35,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2018-11-07 20:07:35,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 2887. [2018-11-07 20:07:35,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2887 states. [2018-11-07 20:07:35,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 4259 transitions. [2018-11-07 20:07:35,373 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 4259 transitions. Word has length 270 [2018-11-07 20:07:35,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:07:35,374 INFO L480 AbstractCegarLoop]: Abstraction has 2887 states and 4259 transitions. [2018-11-07 20:07:35,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:07:35,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 4259 transitions. [2018-11-07 20:07:35,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-11-07 20:07:35,385 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:07:35,385 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, 2, 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] [2018-11-07 20:07:35,386 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:07:35,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:07:35,386 INFO L82 PathProgramCache]: Analyzing trace with hash -307629149, now seen corresponding path program 1 times [2018-11-07 20:07:35,386 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:07:35,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:07:35,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:07:35,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:07:35,387 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:07:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:07:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-11-07 20:07:35,640 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:07:35,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:07:35,641 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:07:35,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:07:35,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:07:35,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:07:35,642 INFO L87 Difference]: Start difference. First operand 2887 states and 4259 transitions. Second operand 3 states. [2018-11-07 20:07:38,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:07:38,195 INFO L93 Difference]: Finished difference Result 6150 states and 9532 transitions. [2018-11-07 20:07:38,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:07:38,196 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 286 [2018-11-07 20:07:38,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:07:38,216 INFO L225 Difference]: With dead ends: 6150 [2018-11-07 20:07:38,217 INFO L226 Difference]: Without dead ends: 3650 [2018-11-07 20:07:38,233 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:07:38,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3650 states. [2018-11-07 20:07:38,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3650 to 3648. [2018-11-07 20:07:38,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3648 states. [2018-11-07 20:07:38,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 5286 transitions. [2018-11-07 20:07:38,319 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 5286 transitions. Word has length 286 [2018-11-07 20:07:38,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:07:38,320 INFO L480 AbstractCegarLoop]: Abstraction has 3648 states and 5286 transitions. [2018-11-07 20:07:38,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:07:38,320 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 5286 transitions. [2018-11-07 20:07:38,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-11-07 20:07:38,331 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:07:38,331 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:07:38,331 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:07:38,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:07:38,332 INFO L82 PathProgramCache]: Analyzing trace with hash 748491532, now seen corresponding path program 1 times [2018-11-07 20:07:38,332 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:07:38,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:07:38,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:07:38,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:07:38,333 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:07:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:07:39,046 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-11-07 20:07:39,046 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:07:39,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:07:39,046 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:07:39,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:07:39,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:07:39,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:07:39,048 INFO L87 Difference]: Start difference. First operand 3648 states and 5286 transitions. Second operand 3 states. [2018-11-07 20:07:40,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:07:40,571 INFO L93 Difference]: Finished difference Result 9903 states and 14997 transitions. [2018-11-07 20:07:40,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:07:40,572 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 291 [2018-11-07 20:07:40,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:07:40,615 INFO L225 Difference]: With dead ends: 9903 [2018-11-07 20:07:40,615 INFO L226 Difference]: Without dead ends: 6642 [2018-11-07 20:07:40,636 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:07:40,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6642 states. [2018-11-07 20:07:40,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6642 to 6642. [2018-11-07 20:07:40,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6642 states. [2018-11-07 20:07:40,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6642 states to 6642 states and 9534 transitions. [2018-11-07 20:07:40,812 INFO L78 Accepts]: Start accepts. Automaton has 6642 states and 9534 transitions. Word has length 291 [2018-11-07 20:07:40,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:07:40,813 INFO L480 AbstractCegarLoop]: Abstraction has 6642 states and 9534 transitions. [2018-11-07 20:07:40,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:07:40,813 INFO L276 IsEmpty]: Start isEmpty. Operand 6642 states and 9534 transitions. [2018-11-07 20:07:40,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-11-07 20:07:40,834 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:07:40,835 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:07:40,835 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:07:40,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:07:40,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1761643877, now seen corresponding path program 1 times [2018-11-07 20:07:40,835 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:07:40,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:07:40,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:07:40,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:07:40,837 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:07:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:07:41,120 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-11-07 20:07:41,120 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:07:41,120 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:07:41,120 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 308 with the following transitions: [2018-11-07 20:07:41,121 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], [445], [447], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [649], [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] [2018-11-07 20:07:41,126 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:07:41,127 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:07:41,222 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:07:41,808 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:07:41,808 INFO L272 AbstractInterpreter]: Visited 141 different actions 554 times. Merged at 7 different actions 25 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 20:07:41,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:07:41,812 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:07:41,812 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:07:41,812 INFO L194 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 [2018-11-07 20:07:41,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:07:41,823 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:07:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:07:41,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:07:42,267 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:07:42,267 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:07:42,623 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 20:07:42,775 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 20:07:43,530 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:07:43,563 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:07:43,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2018-11-07 20:07:43,564 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:07:43,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 20:07:43,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 20:07:43,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:07:43,566 INFO L87 Difference]: Start difference. First operand 6642 states and 9534 transitions. Second operand 10 states. [2018-11-07 20:08:02,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:08:02,943 INFO L93 Difference]: Finished difference Result 27958 states and 45087 transitions. [2018-11-07 20:08:02,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-11-07 20:08:02,944 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 307 [2018-11-07 20:08:02,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:08:03,076 INFO L225 Difference]: With dead ends: 27958 [2018-11-07 20:08:03,076 INFO L226 Difference]: Without dead ends: 21703 [2018-11-07 20:08:03,149 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 637 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2294 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1000, Invalid=5162, Unknown=0, NotChecked=0, Total=6162 [2018-11-07 20:08:03,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21703 states. [2018-11-07 20:08:03,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21703 to 20702. [2018-11-07 20:08:03,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20702 states. [2018-11-07 20:08:03,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20702 states to 20702 states and 30690 transitions. [2018-11-07 20:08:03,825 INFO L78 Accepts]: Start accepts. Automaton has 20702 states and 30690 transitions. Word has length 307 [2018-11-07 20:08:03,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:08:03,825 INFO L480 AbstractCegarLoop]: Abstraction has 20702 states and 30690 transitions. [2018-11-07 20:08:03,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 20:08:03,826 INFO L276 IsEmpty]: Start isEmpty. Operand 20702 states and 30690 transitions. [2018-11-07 20:08:03,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-11-07 20:08:03,938 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:08:03,939 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, 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] [2018-11-07 20:08:03,939 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:08:03,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:08:03,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1034638058, now seen corresponding path program 1 times [2018-11-07 20:08:03,942 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:08:03,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:08:03,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:08:03,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:08:03,943 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:08:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:08:04,638 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 265 proven. 78 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-11-07 20:08:04,639 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:08:04,639 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:08:04,639 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 395 with the following transitions: [2018-11-07 20:08:04,640 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], [445], [447], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [530], [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], [680], [685], [687], [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] [2018-11-07 20:08:04,645 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:08:04,648 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:08:05,238 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:08:06,185 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:08:06,185 INFO L272 AbstractInterpreter]: Visited 144 different actions 563 times. Merged at 7 different actions 24 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 20:08:06,222 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:08:06,222 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:08:06,222 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:08:06,222 INFO L194 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 [2018-11-07 20:08:06,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:08:06,240 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:08:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:08:06,371 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:08:06,906 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 390 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-11-07 20:08:06,906 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:08:07,902 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 265 proven. 78 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-11-07 20:08:07,924 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:08:07,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 20:08:07,924 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:08:07,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 20:08:07,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 20:08:07,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:08:07,926 INFO L87 Difference]: Start difference. First operand 20702 states and 30690 transitions. Second operand 9 states. [2018-11-07 20:08:12,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:08:12,114 INFO L93 Difference]: Finished difference Result 44308 states and 73449 transitions. [2018-11-07 20:08:12,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 20:08:12,118 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 394 [2018-11-07 20:08:12,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:08:12,272 INFO L225 Difference]: With dead ends: 44308 [2018-11-07 20:08:12,273 INFO L226 Difference]: Without dead ends: 24182 [2018-11-07 20:08:12,390 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 790 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2018-11-07 20:08:12,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24182 states. [2018-11-07 20:08:13,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24182 to 23826. [2018-11-07 20:08:13,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23826 states. [2018-11-07 20:08:13,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23826 states to 23826 states and 33475 transitions. [2018-11-07 20:08:13,161 INFO L78 Accepts]: Start accepts. Automaton has 23826 states and 33475 transitions. Word has length 394 [2018-11-07 20:08:13,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:08:13,162 INFO L480 AbstractCegarLoop]: Abstraction has 23826 states and 33475 transitions. [2018-11-07 20:08:13,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 20:08:13,162 INFO L276 IsEmpty]: Start isEmpty. Operand 23826 states and 33475 transitions. [2018-11-07 20:08:13,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2018-11-07 20:08:13,222 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:08:13,223 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:08:13,223 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:08:13,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:08:13,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1108996238, now seen corresponding path program 1 times [2018-11-07 20:08:13,224 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:08:13,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:08:13,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:08:13,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:08:13,225 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:08:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:08:14,048 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-07 20:08:14,049 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:08:14,049 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:08:14,049 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 398 with the following transitions: [2018-11-07 20:08:14,049 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], [445], [447], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [649], [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] [2018-11-07 20:08:14,052 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:08:14,053 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:08:14,180 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:08:14,636 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:08:14,636 INFO L272 AbstractInterpreter]: Visited 136 different actions 396 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 20:08:14,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:08:14,643 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:08:15,171 INFO L227 lantSequenceWeakener]: Weakened 394 states. On average, predicates are now at 73.52% of their original sizes. [2018-11-07 20:08:15,171 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:08:15,300 INFO L415 sIntCurrentIteration]: We unified 396 AI predicates to 396 [2018-11-07 20:08:15,300 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:08:15,300 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:08:15,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 20:08:15,300 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:08:15,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 20:08:15,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 20:08:15,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:08:15,301 INFO L87 Difference]: Start difference. First operand 23826 states and 33475 transitions. Second operand 10 states. [2018-11-07 20:08:22,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:08:22,578 INFO L93 Difference]: Finished difference Result 47462 states and 66807 transitions. [2018-11-07 20:08:22,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 20:08:22,579 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 397 [2018-11-07 20:08:22,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:08:22,661 INFO L225 Difference]: With dead ends: 47462 [2018-11-07 20:08:22,661 INFO L226 Difference]: Without dead ends: 24215 [2018-11-07 20:08:22,728 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 403 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-11-07 20:08:22,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24215 states. [2018-11-07 20:08:23,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24215 to 24212. [2018-11-07 20:08:23,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24212 states. [2018-11-07 20:08:23,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24212 states to 24212 states and 33892 transitions. [2018-11-07 20:08:23,238 INFO L78 Accepts]: Start accepts. Automaton has 24212 states and 33892 transitions. Word has length 397 [2018-11-07 20:08:23,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:08:23,239 INFO L480 AbstractCegarLoop]: Abstraction has 24212 states and 33892 transitions. [2018-11-07 20:08:23,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 20:08:23,239 INFO L276 IsEmpty]: Start isEmpty. Operand 24212 states and 33892 transitions. [2018-11-07 20:08:23,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-11-07 20:08:23,296 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:08:23,297 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:08:23,297 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:08:23,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:08:23,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1688414632, now seen corresponding path program 1 times [2018-11-07 20:08:23,297 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:08:23,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:08:23,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:08:23,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:08:23,299 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:08:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:08:23,946 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-07 20:08:23,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:08:23,946 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:08:23,946 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 403 with the following transitions: [2018-11-07 20:08:23,947 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], [445], [447], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [649], [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] [2018-11-07 20:08:23,949 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:08:23,949 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:08:24,013 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:08:24,573 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:08:24,573 INFO L272 AbstractInterpreter]: Visited 142 different actions 558 times. Merged at 7 different actions 25 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 20:08:24,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:08:24,579 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:08:24,579 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:08:24,579 INFO L194 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 [2018-11-07 20:08:24,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:08:24,588 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:08:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:08:24,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:08:24,821 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-07 20:08:24,821 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:08:25,041 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 386 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-07 20:08:25,060 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:08:25,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-11-07 20:08:25,061 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:08:25,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:08:25,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:08:25,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 20:08:25,062 INFO L87 Difference]: Start difference. First operand 24212 states and 33892 transitions. Second operand 6 states. [2018-11-07 20:08:27,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:08:27,021 INFO L93 Difference]: Finished difference Result 47376 states and 70122 transitions. [2018-11-07 20:08:27,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:08:27,022 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 402 [2018-11-07 20:08:27,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:08:27,118 INFO L225 Difference]: With dead ends: 47376 [2018-11-07 20:08:27,119 INFO L226 Difference]: Without dead ends: 24129 [2018-11-07 20:08:27,191 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 805 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:08:27,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24129 states. [2018-11-07 20:08:27,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24129 to 23901. [2018-11-07 20:08:27,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23901 states. [2018-11-07 20:08:27,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23901 states to 23901 states and 30706 transitions. [2018-11-07 20:08:27,734 INFO L78 Accepts]: Start accepts. Automaton has 23901 states and 30706 transitions. Word has length 402 [2018-11-07 20:08:27,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:08:27,735 INFO L480 AbstractCegarLoop]: Abstraction has 23901 states and 30706 transitions. [2018-11-07 20:08:27,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:08:27,735 INFO L276 IsEmpty]: Start isEmpty. Operand 23901 states and 30706 transitions. [2018-11-07 20:08:27,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2018-11-07 20:08:27,798 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:08:27,798 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:08:27,798 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:08:27,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:08:27,799 INFO L82 PathProgramCache]: Analyzing trace with hash -788927721, now seen corresponding path program 1 times [2018-11-07 20:08:27,799 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:08:27,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:08:27,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:08:27,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:08:27,800 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:08:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:08:28,325 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 189 proven. 217 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-11-07 20:08:28,325 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:08:28,325 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:08:28,325 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 424 with the following transitions: [2018-11-07 20:08:28,326 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], [445], [447], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [653], [654], [658], [662], [666], [677], [680], [685], [687], [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] [2018-11-07 20:08:28,328 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:08:28,328 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:08:28,420 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:08:29,184 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:08:29,184 INFO L272 AbstractInterpreter]: Visited 144 different actions 563 times. Merged at 7 different actions 24 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 20:08:29,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:08:29,201 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:08:29,201 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:08:29,201 INFO L194 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 [2018-11-07 20:08:29,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:08:29,212 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:08:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:08:29,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:08:32,668 WARN L179 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 13 [2018-11-07 20:08:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 343 proven. 107 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-11-07 20:08:32,855 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:08:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 294 proven. 107 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-11-07 20:08:33,099 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:08:33,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5] total 12 [2018-11-07 20:08:33,099 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:08:33,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 20:08:33,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 20:08:33,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=96, Unknown=2, NotChecked=0, Total=132 [2018-11-07 20:08:33,101 INFO L87 Difference]: Start difference. First operand 23901 states and 30706 transitions. Second operand 10 states. [2018-11-07 20:08:33,518 WARN L179 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-07 20:08:36,670 WARN L179 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-07 20:09:40,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:09:40,015 INFO L93 Difference]: Finished difference Result 65966 states and 91852 transitions. [2018-11-07 20:09:40,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-07 20:09:40,016 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 423 [2018-11-07 20:09:40,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:09:40,269 INFO L225 Difference]: With dead ends: 65966 [2018-11-07 20:09:40,270 INFO L226 Difference]: Without dead ends: 43028 [2018-11-07 20:09:40,393 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 855 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=184, Invalid=514, Unknown=4, NotChecked=0, Total=702 [2018-11-07 20:09:40,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43028 states. [2018-11-07 20:09:41,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43028 to 42960. [2018-11-07 20:09:41,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42960 states. [2018-11-07 20:09:41,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42960 states to 42960 states and 59523 transitions. [2018-11-07 20:09:41,608 INFO L78 Accepts]: Start accepts. Automaton has 42960 states and 59523 transitions. Word has length 423 [2018-11-07 20:09:41,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:09:41,608 INFO L480 AbstractCegarLoop]: Abstraction has 42960 states and 59523 transitions. [2018-11-07 20:09:41,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 20:09:41,609 INFO L276 IsEmpty]: Start isEmpty. Operand 42960 states and 59523 transitions. [2018-11-07 20:09:41,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-11-07 20:09:41,711 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:09:41,711 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:09:41,711 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:09:41,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:09:41,712 INFO L82 PathProgramCache]: Analyzing trace with hash 9576515, now seen corresponding path program 1 times [2018-11-07 20:09:41,712 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:09:41,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:09:41,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:09:41,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:09:41,713 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:09:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:09:42,266 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 398 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-07 20:09:42,266 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:09:42,266 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:09:42,267 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 425 with the following transitions: [2018-11-07 20:09:42,267 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], [445], [447], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [649], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [784], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:09:42,271 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:09:42,271 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:09:42,350 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:09:43,744 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:09:43,745 INFO L272 AbstractInterpreter]: Visited 142 different actions 982 times. Merged at 8 different actions 57 times. Widened at 1 different actions 2 times. Found 12 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 20:09:43,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:09:43,753 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:09:43,753 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:09:43,753 INFO L194 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 [2018-11-07 20:09:43,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:09:43,765 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:09:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:09:43,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:09:44,021 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 398 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-07 20:09:44,022 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:09:44,512 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 398 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-07 20:09:44,533 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:09:44,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-07 20:09:44,533 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:09:44,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 20:09:44,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 20:09:44,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:09:44,535 INFO L87 Difference]: Start difference. First operand 42960 states and 59523 transitions. Second operand 7 states. [2018-11-07 20:09:48,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:09:48,186 INFO L93 Difference]: Finished difference Result 90177 states and 126561 transitions. [2018-11-07 20:09:48,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 20:09:48,187 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 424 [2018-11-07 20:09:48,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:09:48,390 INFO L225 Difference]: With dead ends: 90177 [2018-11-07 20:09:48,390 INFO L226 Difference]: Without dead ends: 48369 [2018-11-07 20:09:48,561 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 863 GetRequests, 849 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-07 20:09:48,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48369 states. [2018-11-07 20:09:49,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48369 to 48287. [2018-11-07 20:09:49,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48287 states. [2018-11-07 20:09:50,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48287 states to 48287 states and 66700 transitions. [2018-11-07 20:09:50,312 INFO L78 Accepts]: Start accepts. Automaton has 48287 states and 66700 transitions. Word has length 424 [2018-11-07 20:09:50,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:09:50,312 INFO L480 AbstractCegarLoop]: Abstraction has 48287 states and 66700 transitions. [2018-11-07 20:09:50,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 20:09:50,312 INFO L276 IsEmpty]: Start isEmpty. Operand 48287 states and 66700 transitions. [2018-11-07 20:09:50,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-11-07 20:09:50,395 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:09:50,395 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:09:50,395 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:09:50,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:09:50,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1266858251, now seen corresponding path program 1 times [2018-11-07 20:09:50,396 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:09:50,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:09:50,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:09:50,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:09:50,397 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:09:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:09:51,301 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 410 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-07 20:09:51,301 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:09:51,301 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:09:51,301 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 433 with the following transitions: [2018-11-07 20:09:51,302 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], [445], [447], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [680], [685], [687], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [784], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 20:09:51,304 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:09:51,305 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:09:51,377 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:09:52,095 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:09:52,095 INFO L272 AbstractInterpreter]: Visited 144 different actions 708 times. Merged at 8 different actions 39 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 20:09:52,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:09:52,113 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:09:52,114 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:09:52,114 INFO L194 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 [2018-11-07 20:09:52,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:09:52,122 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:09:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:09:52,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:09:52,448 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 196 proven. 4 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2018-11-07 20:09:52,449 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:09:53,277 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 196 proven. 216 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-07 20:09:53,297 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:09:53,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 8] total 21 [2018-11-07 20:09:53,298 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:09:53,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 20:09:53,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 20:09:53,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2018-11-07 20:09:53,299 INFO L87 Difference]: Start difference. First operand 48287 states and 66700 transitions. Second operand 16 states. [2018-11-07 20:10:01,102 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2018-11-07 20:10:03,347 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2018-11-07 20:10:03,927 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2018-11-07 20:10:09,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:10:09,584 INFO L93 Difference]: Finished difference Result 109909 states and 172950 transitions. [2018-11-07 20:10:09,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-11-07 20:10:09,585 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 432 [2018-11-07 20:10:09,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:10:09,993 INFO L225 Difference]: With dead ends: 109909 [2018-11-07 20:10:09,993 INFO L226 Difference]: Without dead ends: 62774 [2018-11-07 20:10:10,225 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 991 GetRequests, 905 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2316 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1389, Invalid=6093, Unknown=0, NotChecked=0, Total=7482 [2018-11-07 20:10:10,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62774 states. [2018-11-07 20:10:12,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62774 to 61134. [2018-11-07 20:10:12,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61134 states. Received shutdown request... [2018-11-07 20:10:12,497 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:10:12,503 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:10:12,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:10:12 BoogieIcfgContainer [2018-11-07 20:10:12,504 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:10:12,505 INFO L168 Benchmark]: Toolchain (without parser) took 217486.29 ms. Allocated memory was 1.6 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -164.4 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 20:10:12,506 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:10:12,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1047.74 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-11-07 20:10:12,507 INFO L168 Benchmark]: Boogie Procedure Inliner took 174.91 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -868.3 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2018-11-07 20:10:12,508 INFO L168 Benchmark]: Boogie Preprocessor took 126.87 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:10:12,509 INFO L168 Benchmark]: RCFGBuilder took 4411.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 182.1 MB). Peak memory consumption was 182.1 MB. Max. memory is 7.1 GB. [2018-11-07 20:10:12,510 INFO L168 Benchmark]: TraceAbstraction took 211719.96 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 469.0 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-07 20:10:12,519 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1047.74 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 174.91 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -868.3 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.87 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 4411.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 182.1 MB). Peak memory consumption was 182.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211719.96 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 469.0 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 189]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 189). Cancelled while ReachableStatesComputation was computing reachable states (61038 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 211.6s OverallTime, 14 OverallIterations, 4 TraceHistogramMax, 175.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2970 SDtfs, 18812 SDslu, 3996 SDs, 0 SdLazy, 39400 SolverSat, 6629 SolverUnsat, 78 SolverUnknown, 0 SolverNotchecked, 116.2s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 5995 GetRequests, 5704 SyntacticMatches, 14 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4895 ImplicationChecksByTransitivity, 17.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48287occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.6s AbstIntTime, 9 AbstIntIterations, 3 AbstIntStrong, 0.9977648262763206 AbsIntWeakeningRatio, 0.10344827586206896 AbsIntAvgWeakeningVarsNumRemoved, 23.67816091954023 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 2002 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 13.7s InterpolantComputationTime, 6695 NumberOfCodeBlocks, 6695 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 9051 ConstructedInterpolants, 3 QuantifiedInterpolants, 10333670 SizeOfPredicates, 5 NumberOfNonLiveVariables, 3848 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 26 InterpolantComputations, 5 PerfectInterpolantSequences, 8682/9706 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown