java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label34_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:36:50,216 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:36:50,219 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:36:50,236 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:36:50,236 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:36:50,237 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:36:50,238 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:36:50,241 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:36:50,245 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:36:50,245 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:36:50,246 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:36:50,248 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:36:50,249 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:36:50,249 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:36:50,258 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:36:50,260 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:36:50,261 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:36:50,263 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:36:50,266 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:36:50,269 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:36:50,270 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:36:50,271 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:36:50,274 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:36:50,274 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:36:50,277 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:36:50,278 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:36:50,279 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:36:50,279 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:36:50,280 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:36:50,283 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:36:50,283 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:36:50,285 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:36:50,285 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:36:50,285 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:36:50,287 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:36:50,288 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:36:50,288 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 16:36:50,316 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:36:50,317 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:36:50,318 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:36:50,318 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:36:50,319 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:36:50,319 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:36:50,319 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:36:50,319 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:36:50,319 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:36:50,319 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:36:50,323 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:36:50,323 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:36:50,323 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:36:50,324 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:36:50,324 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:36:50,324 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:36:50,325 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:36:50,325 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:36:50,325 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:36:50,325 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:36:50,325 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:36:50,327 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:36:50,328 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:36:50,328 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:36:50,328 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:36:50,328 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:36:50,328 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:36:50,329 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:36:50,329 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:36:50,329 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:36:50,329 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:36:50,329 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:36:50,329 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:36:50,330 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:36:50,330 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:36:50,384 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:36:50,396 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:36:50,400 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:36:50,401 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:36:50,401 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:36:50,402 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label34_false-unreach-call.c [2018-11-12 16:36:50,461 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b9bcfa74/f7a6fef6b80f4ac5b64fe3c36d6d5f6b/FLAGf1bc2bbd5 [2018-11-12 16:36:51,113 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:36:51,113 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label34_false-unreach-call.c [2018-11-12 16:36:51,133 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b9bcfa74/f7a6fef6b80f4ac5b64fe3c36d6d5f6b/FLAGf1bc2bbd5 [2018-11-12 16:36:51,152 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b9bcfa74/f7a6fef6b80f4ac5b64fe3c36d6d5f6b [2018-11-12 16:36:51,162 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:36:51,164 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:36:51,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:36:51,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:36:51,169 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:36:51,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:36:51" (1/1) ... [2018-11-12 16:36:51,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425d5bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:51, skipping insertion in model container [2018-11-12 16:36:51,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:36:51" (1/1) ... [2018-11-12 16:36:51,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:36:51,273 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:36:52,169 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:36:52,174 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:36:52,500 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:36:52,524 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:36:52,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:52 WrapperNode [2018-11-12 16:36:52,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:36:52,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:36:52,526 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:36:52,526 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:36:52,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:52" (1/1) ... [2018-11-12 16:36:52,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:52" (1/1) ... [2018-11-12 16:36:52,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:36:52,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:36:52,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:36:52,742 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:36:52,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:52" (1/1) ... [2018-11-12 16:36:52,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:52" (1/1) ... [2018-11-12 16:36:52,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:52" (1/1) ... [2018-11-12 16:36:52,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:52" (1/1) ... [2018-11-12 16:36:52,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:52" (1/1) ... [2018-11-12 16:36:52,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:52" (1/1) ... [2018-11-12 16:36:52,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:52" (1/1) ... [2018-11-12 16:36:52,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:36:52,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:36:52,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:36:52,895 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:36:52,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:36:52,962 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:36:52,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:36:52,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:36:52,962 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:36:52,963 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:36:52,963 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:36:52,963 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:36:52,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:36:52,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:36:52,964 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:36:52,964 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:36:59,537 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:36:59,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:36:59 BoogieIcfgContainer [2018-11-12 16:36:59,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:36:59,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:36:59,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:36:59,544 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:36:59,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:36:51" (1/3) ... [2018-11-12 16:36:59,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bcfc29c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:36:59, skipping insertion in model container [2018-11-12 16:36:59,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:52" (2/3) ... [2018-11-12 16:36:59,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bcfc29c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:36:59, skipping insertion in model container [2018-11-12 16:36:59,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:36:59" (3/3) ... [2018-11-12 16:36:59,548 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label34_false-unreach-call.c [2018-11-12 16:36:59,560 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:36:59,570 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:36:59,590 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:36:59,634 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:36:59,634 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:36:59,634 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:36:59,634 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:36:59,635 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:36:59,635 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:36:59,635 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:36:59,635 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:36:59,668 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-12 16:36:59,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-12 16:36:59,675 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:36:59,676 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] [2018-11-12 16:36:59,679 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:36:59,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:36:59,686 INFO L82 PathProgramCache]: Analyzing trace with hash 554449340, now seen corresponding path program 1 times [2018-11-12 16:36:59,689 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:36:59,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:59,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:36:59,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:59,752 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:36:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:37:00,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:37:00,138 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:37:00,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:37:00,138 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:37:00,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:37:00,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:37:00,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:37:00,167 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-12 16:37:06,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:37:06,285 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-11-12 16:37:06,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:37:06,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-11-12 16:37:06,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:37:06,316 INFO L225 Difference]: With dead ends: 1558 [2018-11-12 16:37:06,316 INFO L226 Difference]: Without dead ends: 1114 [2018-11-12 16:37:06,324 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:37:06,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-11-12 16:37:06,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1091. [2018-11-12 16:37:06,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2018-11-12 16:37:06,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1853 transitions. [2018-11-12 16:37:06,469 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1853 transitions. Word has length 20 [2018-11-12 16:37:06,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:37:06,470 INFO L480 AbstractCegarLoop]: Abstraction has 1091 states and 1853 transitions. [2018-11-12 16:37:06,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:37:06,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1853 transitions. [2018-11-12 16:37:06,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-12 16:37:06,476 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:37:06,476 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:37:06,476 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:37:06,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:06,477 INFO L82 PathProgramCache]: Analyzing trace with hash 219727794, now seen corresponding path program 1 times [2018-11-12 16:37:06,477 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:37:06,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:06,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:37:06,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:06,478 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:37:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:37:06,808 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:37:06,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:37:06,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:37:06,808 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:37:06,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:37:06,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:37:06,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:37:06,814 INFO L87 Difference]: Start difference. First operand 1091 states and 1853 transitions. Second operand 5 states. [2018-11-12 16:37:12,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:37:12,424 INFO L93 Difference]: Finished difference Result 3243 states and 5585 transitions. [2018-11-12 16:37:12,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 16:37:12,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2018-11-12 16:37:12,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:37:12,442 INFO L225 Difference]: With dead ends: 3243 [2018-11-12 16:37:12,442 INFO L226 Difference]: Without dead ends: 2158 [2018-11-12 16:37:12,449 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:37:12,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2018-11-12 16:37:12,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 2114. [2018-11-12 16:37:12,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2018-11-12 16:37:12,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3176 transitions. [2018-11-12 16:37:12,535 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3176 transitions. Word has length 93 [2018-11-12 16:37:12,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:37:12,535 INFO L480 AbstractCegarLoop]: Abstraction has 2114 states and 3176 transitions. [2018-11-12 16:37:12,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:37:12,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3176 transitions. [2018-11-12 16:37:12,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-11-12 16:37:12,541 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:37:12,541 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:37:12,541 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:37:12,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:12,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1955423070, now seen corresponding path program 1 times [2018-11-12 16:37:12,543 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:37:12,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:12,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:37:12,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:12,545 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:37:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:37:12,862 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:37:12,862 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:37:12,862 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:37:12,863 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 102 with the following transitions: [2018-11-12 16:37:12,865 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:37:12,915 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:37:12,915 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:37:13,429 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:37:13,432 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Performed 754 root evaluator evaluations with a maximum evaluation depth of 4. Performed 754 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 16:37:13,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:13,481 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:37:13,802 INFO L227 lantSequenceWeakener]: Weakened 95 states. On average, predicates are now at 77.27% of their original sizes. [2018-11-12 16:37:13,802 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:37:14,163 INFO L415 sIntCurrentIteration]: We unified 100 AI predicates to 100 [2018-11-12 16:37:14,165 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:37:14,166 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:37:14,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-11-12 16:37:14,167 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:37:14,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 16:37:14,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 16:37:14,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 16:37:14,170 INFO L87 Difference]: Start difference. First operand 2114 states and 3176 transitions. Second operand 7 states. [2018-11-12 16:37:16,375 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:37:44,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:37:44,292 INFO L93 Difference]: Finished difference Result 4532 states and 6731 transitions. [2018-11-12 16:37:44,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:37:44,293 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2018-11-12 16:37:44,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:37:44,306 INFO L225 Difference]: With dead ends: 4532 [2018-11-12 16:37:44,306 INFO L226 Difference]: Without dead ends: 2424 [2018-11-12 16:37:44,314 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 101 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:37:44,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2018-11-12 16:37:44,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2422. [2018-11-12 16:37:44,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2422 states. [2018-11-12 16:37:44,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 3492 transitions. [2018-11-12 16:37:44,379 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 3492 transitions. Word has length 101 [2018-11-12 16:37:44,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:37:44,380 INFO L480 AbstractCegarLoop]: Abstraction has 2422 states and 3492 transitions. [2018-11-12 16:37:44,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 16:37:44,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 3492 transitions. [2018-11-12 16:37:44,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-11-12 16:37:44,384 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:37:44,385 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:37:44,385 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:37:44,385 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:44,386 INFO L82 PathProgramCache]: Analyzing trace with hash -628352103, now seen corresponding path program 1 times [2018-11-12 16:37:44,386 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:37:44,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:44,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:37:44,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:44,387 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:37:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:37:45,543 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-12 16:37:45,885 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:37:45,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:37:45,885 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:37:45,886 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 198 with the following transitions: [2018-11-12 16:37:45,886 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:37:45,897 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:37:45,898 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:37:45,997 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:37:47,646 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:37:47,648 INFO L272 AbstractInterpreter]: Visited 104 different actions 692 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Performed 10204 root evaluator evaluations with a maximum evaluation depth of 6. Performed 10204 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:37:47,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:47,684 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:37:48,320 INFO L227 lantSequenceWeakener]: Weakened 31 states. On average, predicates are now at 78.3% of their original sizes. [2018-11-12 16:37:48,320 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:37:51,649 INFO L415 sIntCurrentIteration]: We unified 196 AI predicates to 196 [2018-11-12 16:37:51,649 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:37:51,650 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:37:51,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-11-12 16:37:51,650 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:37:51,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 16:37:51,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 16:37:51,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2018-11-12 16:37:51,653 INFO L87 Difference]: Start difference. First operand 2422 states and 3492 transitions. Second operand 16 states. [2018-11-12 16:38:22,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:38:22,149 INFO L93 Difference]: Finished difference Result 5713 states and 8072 transitions. [2018-11-12 16:38:22,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-12 16:38:22,149 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 197 [2018-11-12 16:38:22,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:38:22,167 INFO L225 Difference]: With dead ends: 5713 [2018-11-12 16:38:22,168 INFO L226 Difference]: Without dead ends: 3605 [2018-11-12 16:38:22,176 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 206 GetRequests, 105 SyntacticMatches, 77 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2018-11-12 16:38:22,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3605 states. [2018-11-12 16:38:22,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3605 to 3351. [2018-11-12 16:38:22,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3351 states. [2018-11-12 16:38:22,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3351 states to 3351 states and 4463 transitions. [2018-11-12 16:38:22,269 INFO L78 Accepts]: Start accepts. Automaton has 3351 states and 4463 transitions. Word has length 197 [2018-11-12 16:38:22,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:38:22,269 INFO L480 AbstractCegarLoop]: Abstraction has 3351 states and 4463 transitions. [2018-11-12 16:38:22,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 16:38:22,270 INFO L276 IsEmpty]: Start isEmpty. Operand 3351 states and 4463 transitions. [2018-11-12 16:38:22,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-11-12 16:38:22,275 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:38:22,276 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:38:22,276 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:38:22,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:38:22,276 INFO L82 PathProgramCache]: Analyzing trace with hash 226665810, now seen corresponding path program 1 times [2018-11-12 16:38:22,277 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:38:22,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:38:22,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:38:22,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:38:22,278 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:38:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:38:22,590 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:38:22,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:38:22,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:38:22,591 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:38:22,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:38:22,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:38:22,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:38:22,593 INFO L87 Difference]: Start difference. First operand 3351 states and 4463 transitions. Second operand 3 states. [2018-11-12 16:38:26,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:38:26,217 INFO L93 Difference]: Finished difference Result 7336 states and 10701 transitions. [2018-11-12 16:38:26,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:38:26,222 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 307 [2018-11-12 16:38:26,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:38:26,253 INFO L225 Difference]: With dead ends: 7336 [2018-11-12 16:38:26,253 INFO L226 Difference]: Without dead ends: 5228 [2018-11-12 16:38:26,272 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 [2018-11-12 16:38:26,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5228 states. [2018-11-12 16:38:26,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5228 to 5225. [2018-11-12 16:38:26,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5225 states. [2018-11-12 16:38:26,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 6687 transitions. [2018-11-12 16:38:26,418 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 6687 transitions. Word has length 307 [2018-11-12 16:38:26,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:38:26,419 INFO L480 AbstractCegarLoop]: Abstraction has 5225 states and 6687 transitions. [2018-11-12 16:38:26,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:38:26,420 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 6687 transitions. [2018-11-12 16:38:26,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-11-12 16:38:26,428 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:38:26,429 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:38:26,429 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:38:26,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:38:26,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1802299581, now seen corresponding path program 1 times [2018-11-12 16:38:26,430 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:38:26,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:38:26,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:38:26,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:38:26,431 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:38:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:38:26,897 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:38:27,731 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 14 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-12 16:38:27,731 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:38:27,732 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:38:27,732 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 378 with the following transitions: [2018-11-12 16:38:27,738 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1623], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:38:27,759 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:38:27,759 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:38:28,050 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:38:28,587 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:38:28,587 INFO L272 AbstractInterpreter]: Visited 295 different actions 881 times. Merged at 7 different actions 18 times. Never widened. Performed 13341 root evaluator evaluations with a maximum evaluation depth of 6. Performed 13341 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 16:38:28,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:38:28,598 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:38:29,060 INFO L227 lantSequenceWeakener]: Weakened 374 states. On average, predicates are now at 80.05% of their original sizes. [2018-11-12 16:38:29,060 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:38:29,228 INFO L415 sIntCurrentIteration]: We unified 376 AI predicates to 376 [2018-11-12 16:38:29,228 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:38:29,228 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:38:29,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-11-12 16:38:29,229 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:38:29,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 16:38:29,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 16:38:29,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:38:29,230 INFO L87 Difference]: Start difference. First operand 5225 states and 6687 transitions. Second operand 10 states. [2018-11-12 16:38:47,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:38:47,099 INFO L93 Difference]: Finished difference Result 11418 states and 14721 transitions. [2018-11-12 16:38:47,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-12 16:38:47,099 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 377 [2018-11-12 16:38:47,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:38:47,130 INFO L225 Difference]: With dead ends: 11418 [2018-11-12 16:38:47,130 INFO L226 Difference]: Without dead ends: 7436 [2018-11-12 16:38:47,151 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 383 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-11-12 16:38:47,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7436 states. [2018-11-12 16:38:47,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7436 to 7430. [2018-11-12 16:38:47,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7430 states. [2018-11-12 16:38:47,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7430 states to 7430 states and 9130 transitions. [2018-11-12 16:38:47,320 INFO L78 Accepts]: Start accepts. Automaton has 7430 states and 9130 transitions. Word has length 377 [2018-11-12 16:38:47,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:38:47,321 INFO L480 AbstractCegarLoop]: Abstraction has 7430 states and 9130 transitions. [2018-11-12 16:38:47,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 16:38:47,321 INFO L276 IsEmpty]: Start isEmpty. Operand 7430 states and 9130 transitions. [2018-11-12 16:38:47,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2018-11-12 16:38:47,331 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:38:47,331 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:38:47,332 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:38:47,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:38:47,332 INFO L82 PathProgramCache]: Analyzing trace with hash -428709108, now seen corresponding path program 1 times [2018-11-12 16:38:47,333 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:38:47,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:38:47,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:38:47,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:38:47,334 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:38:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:38:47,703 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 16:38:47,703 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:38:47,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:38:47,703 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:38:47,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:38:47,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:38:47,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:38:47,705 INFO L87 Difference]: Start difference. First operand 7430 states and 9130 transitions. Second operand 3 states. [2018-11-12 16:38:50,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:38:50,088 INFO L93 Difference]: Finished difference Result 13275 states and 17704 transitions. [2018-11-12 16:38:50,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:38:50,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 407 [2018-11-12 16:38:50,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:38:50,139 INFO L225 Difference]: With dead ends: 13275 [2018-11-12 16:38:50,140 INFO L226 Difference]: Without dead ends: 9293 [2018-11-12 16:38:50,175 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 [2018-11-12 16:38:50,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9293 states. [2018-11-12 16:38:50,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9293 to 9290. [2018-11-12 16:38:50,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9290 states. [2018-11-12 16:38:50,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9290 states to 9290 states and 11366 transitions. [2018-11-12 16:38:50,392 INFO L78 Accepts]: Start accepts. Automaton has 9290 states and 11366 transitions. Word has length 407 [2018-11-12 16:38:50,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:38:50,393 INFO L480 AbstractCegarLoop]: Abstraction has 9290 states and 11366 transitions. [2018-11-12 16:38:50,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:38:50,393 INFO L276 IsEmpty]: Start isEmpty. Operand 9290 states and 11366 transitions. [2018-11-12 16:38:50,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-11-12 16:38:50,409 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:38:50,410 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:38:50,410 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:38:50,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:38:50,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1271737079, now seen corresponding path program 1 times [2018-11-12 16:38:50,411 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:38:50,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:38:50,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:38:50,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:38:50,412 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:38:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:38:50,865 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:38:51,634 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 30 proven. 189 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-12 16:38:51,634 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:38:51,635 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:38:51,635 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 478 with the following transitions: [2018-11-12 16:38:51,636 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:38:51,643 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:38:51,643 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:38:51,781 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:38:54,361 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:38:54,362 INFO L272 AbstractInterpreter]: Visited 284 different actions 1687 times. Merged at 8 different actions 38 times. Widened at 1 different actions 1 times. Performed 28735 root evaluator evaluations with a maximum evaluation depth of 6. Performed 28735 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 11 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:38:54,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:38:54,369 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:38:54,914 INFO L227 lantSequenceWeakener]: Weakened 474 states. On average, predicates are now at 83.43% of their original sizes. [2018-11-12 16:38:54,914 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:38:55,038 INFO L415 sIntCurrentIteration]: We unified 476 AI predicates to 476 [2018-11-12 16:38:55,039 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:38:55,039 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:38:55,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-11-12 16:38:55,039 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:38:55,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 16:38:55,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 16:38:55,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:38:55,041 INFO L87 Difference]: Start difference. First operand 9290 states and 11366 transitions. Second operand 10 states. [2018-11-12 16:39:10,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:39:10,089 INFO L93 Difference]: Finished difference Result 20943 states and 26906 transitions. [2018-11-12 16:39:10,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 16:39:10,089 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 477 [2018-11-12 16:39:10,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:39:10,141 INFO L225 Difference]: With dead ends: 20943 [2018-11-12 16:39:10,141 INFO L226 Difference]: Without dead ends: 15101 [2018-11-12 16:39:10,165 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 484 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-11-12 16:39:10,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15101 states. [2018-11-12 16:39:10,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15101 to 15030. [2018-11-12 16:39:10,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15030 states. [2018-11-12 16:39:10,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15030 states to 15030 states and 18671 transitions. [2018-11-12 16:39:10,479 INFO L78 Accepts]: Start accepts. Automaton has 15030 states and 18671 transitions. Word has length 477 [2018-11-12 16:39:10,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:39:10,483 INFO L480 AbstractCegarLoop]: Abstraction has 15030 states and 18671 transitions. [2018-11-12 16:39:10,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 16:39:10,483 INFO L276 IsEmpty]: Start isEmpty. Operand 15030 states and 18671 transitions. [2018-11-12 16:39:10,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2018-11-12 16:39:10,504 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:39:10,505 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:39:10,505 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:39:10,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:39:10,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1582871640, now seen corresponding path program 1 times [2018-11-12 16:39:10,506 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:39:10,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:39:10,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:39:10,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:39:10,508 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:39:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:39:11,000 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:39:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 30 proven. 201 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-12 16:39:11,663 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:39:11,664 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:39:11,664 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 490 with the following transitions: [2018-11-12 16:39:11,664 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [621], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:39:11,671 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:39:11,671 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:39:11,852 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:39:13,913 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:39:13,913 INFO L272 AbstractInterpreter]: Visited 285 different actions 1697 times. Merged at 8 different actions 47 times. Widened at 1 different actions 1 times. Performed 28716 root evaluator evaluations with a maximum evaluation depth of 6. Performed 28716 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 10 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:39:13,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:39:13,920 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:39:13,920 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:39:13,920 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:39:13,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:39:13,933 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:39:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:39:14,101 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:39:14,431 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-11-12 16:39:14,432 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:39:14,741 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-11-12 16:39:14,763 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:39:14,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-11-12 16:39:14,763 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:39:14,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:39:14,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:39:14,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:39:14,765 INFO L87 Difference]: Start difference. First operand 15030 states and 18671 transitions. Second operand 3 states. [2018-11-12 16:39:17,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:39:17,858 INFO L93 Difference]: Finished difference Result 30355 states and 39183 transitions. [2018-11-12 16:39:17,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:39:17,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 489 [2018-11-12 16:39:17,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:39:17,930 INFO L225 Difference]: With dead ends: 30355 [2018-11-12 16:39:17,931 INFO L226 Difference]: Without dead ends: 16888 [2018-11-12 16:39:17,983 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 978 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:39:18,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16888 states. [2018-11-12 16:39:18,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16888 to 16884. [2018-11-12 16:39:18,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16884 states. [2018-11-12 16:39:18,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16884 states to 16884 states and 20404 transitions. [2018-11-12 16:39:18,333 INFO L78 Accepts]: Start accepts. Automaton has 16884 states and 20404 transitions. Word has length 489 [2018-11-12 16:39:18,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:39:18,336 INFO L480 AbstractCegarLoop]: Abstraction has 16884 states and 20404 transitions. [2018-11-12 16:39:18,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:39:18,337 INFO L276 IsEmpty]: Start isEmpty. Operand 16884 states and 20404 transitions. [2018-11-12 16:39:18,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2018-11-12 16:39:18,371 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:39:18,371 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:39:18,371 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:39:18,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:39:18,372 INFO L82 PathProgramCache]: Analyzing trace with hash 742606847, now seen corresponding path program 1 times [2018-11-12 16:39:18,372 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:39:18,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:39:18,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:39:18,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:39:18,373 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:39:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:39:19,029 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 294 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-11-12 16:39:19,029 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:39:19,029 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:39:19,030 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 562 with the following transitions: [2018-11-12 16:39:19,030 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:39:19,035 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:39:19,035 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:39:19,083 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:39:20,787 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:39:20,788 INFO L272 AbstractInterpreter]: Visited 286 different actions 1425 times. Merged at 9 different actions 43 times. Widened at 1 different actions 1 times. Performed 23286 root evaluator evaluations with a maximum evaluation depth of 6. Performed 23286 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 11 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-12 16:39:20,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:39:20,794 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:39:20,794 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:39:20,794 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:39:20,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:39:20,805 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:39:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:39:20,975 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:39:21,171 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 294 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-11-12 16:39:21,172 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:39:21,562 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 294 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-11-12 16:39:21,583 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:39:21,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2018-11-12 16:39:21,584 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:39:21,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:39:21,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:39:21,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 16:39:21,586 INFO L87 Difference]: Start difference. First operand 16884 states and 20404 transitions. Second operand 6 states. [2018-11-12 16:39:26,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:39:26,310 INFO L93 Difference]: Finished difference Result 34723 states and 44752 transitions. [2018-11-12 16:39:26,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-12 16:39:26,310 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 561 [2018-11-12 16:39:26,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:39:26,385 INFO L225 Difference]: With dead ends: 34723 [2018-11-12 16:39:26,386 INFO L226 Difference]: Without dead ends: 24115 [2018-11-12 16:39:26,426 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1134 GetRequests, 1123 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:39:26,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24115 states. [2018-11-12 16:39:26,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24115 to 24048. [2018-11-12 16:39:26,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24048 states. [2018-11-12 16:39:26,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24048 states to 24048 states and 28636 transitions. [2018-11-12 16:39:26,821 INFO L78 Accepts]: Start accepts. Automaton has 24048 states and 28636 transitions. Word has length 561 [2018-11-12 16:39:26,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:39:26,822 INFO L480 AbstractCegarLoop]: Abstraction has 24048 states and 28636 transitions. [2018-11-12 16:39:26,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:39:26,822 INFO L276 IsEmpty]: Start isEmpty. Operand 24048 states and 28636 transitions. [2018-11-12 16:39:26,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2018-11-12 16:39:26,855 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:39:26,856 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:39:26,856 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:39:26,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:39:26,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1151241394, now seen corresponding path program 1 times [2018-11-12 16:39:26,857 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:39:26,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:39:26,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:39:26,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:39:26,858 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:39:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:39:28,207 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2018-11-12 16:39:28,207 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:39:28,207 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:39:28,208 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 571 with the following transitions: [2018-11-12 16:39:28,208 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1167], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:39:28,213 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:39:28,213 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:39:28,427 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:39:30,139 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:39:30,139 INFO L272 AbstractInterpreter]: Visited 285 different actions 1698 times. Merged at 8 different actions 46 times. Widened at 1 different actions 1 times. Performed 28008 root evaluator evaluations with a maximum evaluation depth of 6. Performed 28008 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 10 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:39:30,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:39:30,147 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:39:30,147 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:39:30,147 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:39:30,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:39:30,466 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:39:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:39:30,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:39:34,742 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2018-11-12 16:39:34,742 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:39:35,200 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2018-11-12 16:39:35,220 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-12 16:39:35,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 9 [2018-11-12 16:39:35,221 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:39:35,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:39:35,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:39:35,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=47, Unknown=2, NotChecked=0, Total=72 [2018-11-12 16:39:35,222 INFO L87 Difference]: Start difference. First operand 24048 states and 28636 transitions. Second operand 3 states. [2018-11-12 16:39:37,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:39:37,674 INFO L93 Difference]: Finished difference Result 41466 states and 51356 transitions. [2018-11-12 16:39:37,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:39:37,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 570 [2018-11-12 16:39:37,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:39:37,744 INFO L225 Difference]: With dead ends: 41466 [2018-11-12 16:39:37,744 INFO L226 Difference]: Without dead ends: 23694 [2018-11-12 16:39:37,800 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1152 GetRequests, 1141 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=23, Invalid=47, Unknown=2, NotChecked=0, Total=72 [2018-11-12 16:39:37,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23694 states. [2018-11-12 16:39:38,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23694 to 23694. [2018-11-12 16:39:38,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23694 states. [2018-11-12 16:39:38,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23694 states to 23694 states and 28747 transitions. [2018-11-12 16:39:38,183 INFO L78 Accepts]: Start accepts. Automaton has 23694 states and 28747 transitions. Word has length 570 [2018-11-12 16:39:38,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:39:38,184 INFO L480 AbstractCegarLoop]: Abstraction has 23694 states and 28747 transitions. [2018-11-12 16:39:38,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:39:38,184 INFO L276 IsEmpty]: Start isEmpty. Operand 23694 states and 28747 transitions. [2018-11-12 16:39:38,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2018-11-12 16:39:38,201 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:39:38,201 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:39:38,202 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:39:38,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:39:38,202 INFO L82 PathProgramCache]: Analyzing trace with hash -279537587, now seen corresponding path program 1 times [2018-11-12 16:39:38,202 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:39:38,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:39:38,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:39:38,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:39:38,203 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:39:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:39:40,277 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 93 proven. 334 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-12 16:39:40,277 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:39:40,277 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:39:40,278 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 574 with the following transitions: [2018-11-12 16:39:40,278 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1048], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:39:40,282 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:39:40,283 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:39:40,576 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:39:42,229 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:39:42,229 INFO L272 AbstractInterpreter]: Visited 285 different actions 1696 times. Merged at 8 different actions 45 times. Widened at 1 different actions 1 times. Performed 31765 root evaluator evaluations with a maximum evaluation depth of 6. Performed 31765 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 10 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:39:42,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:39:42,231 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:39:42,231 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:39:42,231 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:39:42,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:39:42,240 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:39:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:39:42,405 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:40:03,653 WARN L179 SmtUtils]: Spent 20.45 s on a formula simplification. DAG size of input: 118 DAG size of output: 52 [2018-11-12 16:40:04,165 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 12 [2018-11-12 16:40:04,443 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 313 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:40:04,443 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:40:05,087 WARN L179 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2018-11-12 16:40:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 313 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:40:06,171 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:40:06,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 24 [2018-11-12 16:40:06,171 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:40:06,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-12 16:40:06,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-12 16:40:06,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2018-11-12 16:40:06,173 INFO L87 Difference]: Start difference. First operand 23694 states and 28747 transitions. Second operand 20 states. [2018-11-12 16:40:14,411 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 38 Received shutdown request... [2018-11-12 16:40:22,877 WARN L187 SmtUtils]: Removed 10 from assertion stack [2018-11-12 16:40:22,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-12 16:40:22,878 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:40:22,884 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:40:22,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:40:22 BoogieIcfgContainer [2018-11-12 16:40:22,884 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:40:22,885 INFO L168 Benchmark]: Toolchain (without parser) took 211722.15 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-12 16:40:22,886 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:40:22,887 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1360.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-12 16:40:22,887 INFO L168 Benchmark]: Boogie Procedure Inliner took 215.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -904.7 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. [2018-11-12 16:40:22,888 INFO L168 Benchmark]: Boogie Preprocessor took 153.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-11-12 16:40:22,889 INFO L168 Benchmark]: RCFGBuilder took 6644.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 285.6 MB). Peak memory consumption was 285.6 MB. Max. memory is 7.1 GB. [2018-11-12 16:40:22,890 INFO L168 Benchmark]: TraceAbstraction took 203344.49 ms. Allocated memory was 2.3 GB in the beginning and 4.5 GB in the end (delta: 2.2 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -831.3 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-12 16:40:22,894 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1360.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 215.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -904.7 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 153.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6644.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 285.6 MB). Peak memory consumption was 285.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203344.49 ms. Allocated memory was 2.3 GB in the beginning and 4.5 GB in the end (delta: 2.2 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -831.3 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 46). Cancelled while BasicCegarLoop was constructing difference of abstraction (23694states) and FLOYD_HOARE automaton (currently 29 states, 20 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 95. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 203.2s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 139.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4719 SDtfs, 18725 SDslu, 3068 SDs, 0 SdLazy, 26213 SolverSat, 3913 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 66.1s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 5671 GetRequests, 5439 SyntacticMatches, 89 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 35.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24048occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.9s AbstIntTime, 8 AbstIntIterations, 4 AbstIntStrong, 0.997340286051251 AbsIntWeakeningRatio, 0.09059233449477352 AbsIntAvgWeakeningVarsNumRemoved, 17.374564459930312 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 477 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 36.8s InterpolantComputationTime, 6365 NumberOfCodeBlocks, 6365 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 8538 ConstructedInterpolants, 9 QuantifiedInterpolants, 19490100 SizeOfPredicates, 6 NumberOfNonLiveVariables, 3110 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 20 InterpolantComputations, 7 PerfectInterpolantSequences, 4601/5714 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown