java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label28_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:58:51,055 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:58:51,057 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:58:51,069 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:58:51,070 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:58:51,071 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:58:51,072 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:58:51,074 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:58:51,076 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:58:51,077 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:58:51,078 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:58:51,078 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:58:51,079 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:58:51,080 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:58:51,081 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:58:51,082 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:58:51,083 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:58:51,085 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:58:51,087 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:58:51,088 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:58:51,090 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:58:51,091 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:58:51,094 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 01:58:51,094 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 01:58:51,094 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 01:58:51,095 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 01:58:51,096 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 01:58:51,097 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 01:58:51,098 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 01:58:51,099 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 01:58:51,099 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 01:58:51,100 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-25 01:58:51,103 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 01:58:51,128 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:58:51,128 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:58:51,130 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:58:51,130 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:58:51,130 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:58:51,131 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:58:51,131 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:58:51,131 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:58:51,131 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:58:51,131 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:58:51,131 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:58:51,132 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:58:51,133 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:58:51,133 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:58:51,134 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:58:51,135 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:58:51,135 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:58:51,135 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:58:51,136 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:58:51,136 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:58:51,136 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:58:51,136 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:58:51,136 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:58:51,137 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:58:51,138 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:58:51,138 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:58:51,138 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:58:51,139 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:58:51,139 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:58:51,139 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:58:51,139 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:58:51,140 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:58:51,140 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:58:51,140 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:58:51,140 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:58:51,140 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:58:51,193 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:58:51,217 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:58:51,222 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:58:51,224 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:58:51,224 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:58:51,226 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label28_true-unreach-call.c [2018-10-25 01:58:51,298 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/95ccc29f0/4aedd17f45424b86bdb0dcd8fe5cffeb/FLAGb061014e3 [2018-10-25 01:58:52,032 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:58:52,033 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label28_true-unreach-call.c [2018-10-25 01:58:52,064 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/95ccc29f0/4aedd17f45424b86bdb0dcd8fe5cffeb/FLAGb061014e3 [2018-10-25 01:58:52,080 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/95ccc29f0/4aedd17f45424b86bdb0dcd8fe5cffeb [2018-10-25 01:58:52,092 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:58:52,094 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:58:52,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:58:52,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:58:52,100 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:58:52,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:58:52" (1/1) ... [2018-10-25 01:58:52,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9b40bef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:52, skipping insertion in model container [2018-10-25 01:58:52,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:58:52" (1/1) ... [2018-10-25 01:58:52,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:58:52,240 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:58:53,298 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:58:53,304 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:58:53,722 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:58:53,747 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:58:53,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:53 WrapperNode [2018-10-25 01:58:53,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:58:53,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:58:53,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:58:53,749 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:58:53,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:53" (1/1) ... [2018-10-25 01:58:53,823 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:53" (1/1) ... [2018-10-25 01:58:54,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:58:54,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:58:54,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:58:54,291 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:58:54,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:53" (1/1) ... [2018-10-25 01:58:54,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:53" (1/1) ... [2018-10-25 01:58:54,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:53" (1/1) ... [2018-10-25 01:58:54,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:53" (1/1) ... [2018-10-25 01:58:54,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:53" (1/1) ... [2018-10-25 01:58:54,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:53" (1/1) ... [2018-10-25 01:58:54,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:53" (1/1) ... [2018-10-25 01:58:54,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:58:54,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:58:54,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:58:54,555 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:58:54,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 01:58:54,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:58:54,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:58:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 01:58:54,627 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 01:58:54,627 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:58:54,627 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:58:54,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:58:54,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:58:54,628 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:58:54,628 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:59:06,362 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:59:06,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:59:06 BoogieIcfgContainer [2018-10-25 01:59:06,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:59:06,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:59:06,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:59:06,369 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:59:06,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:58:52" (1/3) ... [2018-10-25 01:59:06,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f671e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:59:06, skipping insertion in model container [2018-10-25 01:59:06,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:58:53" (2/3) ... [2018-10-25 01:59:06,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f671e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:59:06, skipping insertion in model container [2018-10-25 01:59:06,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:59:06" (3/3) ... [2018-10-25 01:59:06,372 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label28_true-unreach-call.c [2018-10-25 01:59:06,382 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:59:06,391 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:59:06,409 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:59:06,453 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:59:06,453 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:59:06,453 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:59:06,453 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:59:06,453 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:59:06,453 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:59:06,454 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:59:06,454 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:59:06,488 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-25 01:59:06,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-25 01:59:06,500 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:59:06,501 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:59:06,504 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:59:06,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:06,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1044962550, now seen corresponding path program 1 times [2018-10-25 01:59:06,512 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:59:06,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:06,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:06,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:06,562 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:59:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:07,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:59:07,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:59:07,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:59:07,101 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:59:07,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:59:07,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:59:07,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:59:07,126 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-25 01:59:22,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:59:22,014 INFO L93 Difference]: Finished difference Result 2133 states and 3959 transitions. [2018-10-25 01:59:22,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:59:22,017 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2018-10-25 01:59:22,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:59:22,052 INFO L225 Difference]: With dead ends: 2133 [2018-10-25 01:59:22,052 INFO L226 Difference]: Without dead ends: 1523 [2018-10-25 01:59:22,066 INFO L605 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 [2018-10-25 01:59:22,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2018-10-25 01:59:22,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1516. [2018-10-25 01:59:22,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1516 states. [2018-10-25 01:59:22,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2287 transitions. [2018-10-25 01:59:22,257 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2287 transitions. Word has length 71 [2018-10-25 01:59:22,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:59:22,259 INFO L481 AbstractCegarLoop]: Abstraction has 1516 states and 2287 transitions. [2018-10-25 01:59:22,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:59:22,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2287 transitions. [2018-10-25 01:59:22,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-25 01:59:22,277 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:59:22,278 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:59:22,278 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:59:22,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:22,279 INFO L82 PathProgramCache]: Analyzing trace with hash 497854657, now seen corresponding path program 1 times [2018-10-25 01:59:22,279 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:59:22,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:22,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:22,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:22,281 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:59:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:22,925 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:59:22,926 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:59:22,926 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:59:22,928 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 147 with the following transitions: [2018-10-25 01:59:22,931 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1158], [1166], [1174], [1178], [1180], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:59:22,997 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:59:22,997 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:59:24,945 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:59:24,947 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 01:59:24,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:24,993 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:59:24,993 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:59:24,993 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 01:59:25,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:25,006 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:59:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:25,114 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:59:54,014 WARN L179 SmtUtils]: Spent 24.27 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-25 02:00:14,296 WARN L179 SmtUtils]: Spent 16.10 s on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-10-25 02:00:14,978 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:00:14,978 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:00:19,434 WARN L179 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-10-25 02:00:19,486 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-10-25 02:00:22,061 WARN L179 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-10-25 02:00:22,432 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:00:22,468 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 02:00:22,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-25 02:00:22,468 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:00:22,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:00:22,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:00:22,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=160, Unknown=5, NotChecked=0, Total=210 [2018-10-25 02:00:22,473 INFO L87 Difference]: Start difference. First operand 1516 states and 2287 transitions. Second operand 6 states. [2018-10-25 02:01:31,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:01:31,986 INFO L93 Difference]: Finished difference Result 5729 states and 8875 transitions. [2018-10-25 02:01:31,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 02:01:31,989 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-10-25 02:01:31,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:01:32,017 INFO L225 Difference]: With dead ends: 5729 [2018-10-25 02:01:32,018 INFO L226 Difference]: Without dead ends: 4219 [2018-10-25 02:01:32,030 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 286 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 56.3s TimeCoverageRelationStatistics Valid=45, Invalid=160, Unknown=5, NotChecked=0, Total=210 [2018-10-25 02:01:32,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4219 states. [2018-10-25 02:01:32,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4219 to 4188. [2018-10-25 02:01:32,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4188 states. [2018-10-25 02:01:32,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4188 states to 4188 states and 6127 transitions. [2018-10-25 02:01:32,157 INFO L78 Accepts]: Start accepts. Automaton has 4188 states and 6127 transitions. Word has length 146 [2018-10-25 02:01:32,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:01:32,157 INFO L481 AbstractCegarLoop]: Abstraction has 4188 states and 6127 transitions. [2018-10-25 02:01:32,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:01:32,158 INFO L276 IsEmpty]: Start isEmpty. Operand 4188 states and 6127 transitions. [2018-10-25 02:01:32,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-25 02:01:32,165 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:01:32,165 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:01:32,165 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:01:32,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:01:32,166 INFO L82 PathProgramCache]: Analyzing trace with hash -977557274, now seen corresponding path program 1 times [2018-10-25 02:01:32,166 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:01:32,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:01:32,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:01:32,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:01:32,167 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:01:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:01:32,498 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:01:32,585 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:01:32,585 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:01:32,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:01:32,586 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:01:32,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:01:32,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:01:32,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:01:32,587 INFO L87 Difference]: Start difference. First operand 4188 states and 6127 transitions. Second operand 6 states. [2018-10-25 02:01:42,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:01:42,720 INFO L93 Difference]: Finished difference Result 12499 states and 19125 transitions. [2018-10-25 02:01:42,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 02:01:42,728 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2018-10-25 02:01:42,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:01:42,784 INFO L225 Difference]: With dead ends: 12499 [2018-10-25 02:01:42,785 INFO L226 Difference]: Without dead ends: 8317 [2018-10-25 02:01:42,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 02:01:42,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8317 states. [2018-10-25 02:01:43,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8317 to 8251. [2018-10-25 02:01:43,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8251 states. [2018-10-25 02:01:43,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8251 states to 8251 states and 11656 transitions. [2018-10-25 02:01:43,042 INFO L78 Accepts]: Start accepts. Automaton has 8251 states and 11656 transitions. Word has length 187 [2018-10-25 02:01:43,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:01:43,043 INFO L481 AbstractCegarLoop]: Abstraction has 8251 states and 11656 transitions. [2018-10-25 02:01:43,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:01:43,043 INFO L276 IsEmpty]: Start isEmpty. Operand 8251 states and 11656 transitions. [2018-10-25 02:01:43,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-25 02:01:43,051 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:01:43,051 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:01:43,051 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:01:43,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:01:43,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1079988822, now seen corresponding path program 1 times [2018-10-25 02:01:43,052 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:01:43,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:01:43,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:01:43,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:01:43,053 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:01:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:01:43,398 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:01:43,398 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:01:43,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-25 02:01:43,399 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:01:43,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-25 02:01:43,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-25 02:01:43,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-25 02:01:43,400 INFO L87 Difference]: Start difference. First operand 8251 states and 11656 transitions. Second operand 7 states. [2018-10-25 02:02:07,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:02:07,299 INFO L93 Difference]: Finished difference Result 24222 states and 39373 transitions. [2018-10-25 02:02:07,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-25 02:02:07,300 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2018-10-25 02:02:07,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:02:07,423 INFO L225 Difference]: With dead ends: 24222 [2018-10-25 02:02:07,423 INFO L226 Difference]: Without dead ends: 15977 [2018-10-25 02:02:07,493 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-25 02:02:07,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15977 states. [2018-10-25 02:02:07,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15977 to 15737. [2018-10-25 02:02:07,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15737 states. [2018-10-25 02:02:08,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15737 states to 15737 states and 23765 transitions. [2018-10-25 02:02:08,018 INFO L78 Accepts]: Start accepts. Automaton has 15737 states and 23765 transitions. Word has length 205 [2018-10-25 02:02:08,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:02:08,019 INFO L481 AbstractCegarLoop]: Abstraction has 15737 states and 23765 transitions. [2018-10-25 02:02:08,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-25 02:02:08,019 INFO L276 IsEmpty]: Start isEmpty. Operand 15737 states and 23765 transitions. [2018-10-25 02:02:08,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-10-25 02:02:08,038 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:02:08,039 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-25 02:02:08,039 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:02:08,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:02:08,039 INFO L82 PathProgramCache]: Analyzing trace with hash 327547341, now seen corresponding path program 1 times [2018-10-25 02:02:08,040 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:02:08,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:08,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:02:08,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:08,041 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:02:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:02:08,342 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:02:08,657 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 129 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-25 02:02:08,657 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:02:08,657 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:02:08,657 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 230 with the following transitions: [2018-10-25 02:02:08,658 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1158], [1166], [1174], [1178], [1180], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1262], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:02:08,665 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:02:08,665 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:02:09,908 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:02:09,908 INFO L272 AbstractInterpreter]: Visited 92 different actions 262 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 02:02:09,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:02:09,946 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:02:09,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:02:09,946 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 02:02:09,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:02:09,960 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:02:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:02:10,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:02:10,463 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:02:10,464 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:02:10,805 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:02:10,840 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 02:02:10,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-25 02:02:10,841 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 02:02:10,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 02:02:10,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 02:02:10,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-25 02:02:10,842 INFO L87 Difference]: Start difference. First operand 15737 states and 23765 transitions. Second operand 9 states. [2018-10-25 02:02:19,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:02:19,623 INFO L93 Difference]: Finished difference Result 36889 states and 57001 transitions. [2018-10-25 02:02:19,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 02:02:19,627 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 229 [2018-10-25 02:02:19,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:02:19,709 INFO L225 Difference]: With dead ends: 36889 [2018-10-25 02:02:19,709 INFO L226 Difference]: Without dead ends: 18457 [2018-10-25 02:02:19,777 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 456 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-10-25 02:02:19,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18457 states. [2018-10-25 02:02:20,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18457 to 18391. [2018-10-25 02:02:20,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18391 states. [2018-10-25 02:02:20,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18391 states to 18391 states and 23561 transitions. [2018-10-25 02:02:20,456 INFO L78 Accepts]: Start accepts. Automaton has 18391 states and 23561 transitions. Word has length 229 [2018-10-25 02:02:20,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:02:20,458 INFO L481 AbstractCegarLoop]: Abstraction has 18391 states and 23561 transitions. [2018-10-25 02:02:20,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 02:02:20,458 INFO L276 IsEmpty]: Start isEmpty. Operand 18391 states and 23561 transitions. [2018-10-25 02:02:20,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-25 02:02:20,469 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:02:20,470 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-25 02:02:20,470 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:02:20,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:02:20,470 INFO L82 PathProgramCache]: Analyzing trace with hash 756448335, now seen corresponding path program 1 times [2018-10-25 02:02:20,471 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:02:20,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:20,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:02:20,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:20,472 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:02:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:02:20,696 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-10-25 02:02:20,697 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:02:20,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 02:02:20,697 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:02:20,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:02:20,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:02:20,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:02:20,698 INFO L87 Difference]: Start difference. First operand 18391 states and 23561 transitions. Second operand 3 states. [2018-10-25 02:02:28,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:02:28,982 INFO L93 Difference]: Finished difference Result 42574 states and 55966 transitions. [2018-10-25 02:02:28,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:02:28,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2018-10-25 02:02:28,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:02:29,054 INFO L225 Difference]: With dead ends: 42574 [2018-10-25 02:02:29,054 INFO L226 Difference]: Without dead ends: 22370 [2018-10-25 02:02:29,120 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:02:29,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22370 states. [2018-10-25 02:02:29,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22370 to 22370. [2018-10-25 02:02:29,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22370 states. [2018-10-25 02:02:29,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22370 states to 22370 states and 27931 transitions. [2018-10-25 02:02:29,570 INFO L78 Accepts]: Start accepts. Automaton has 22370 states and 27931 transitions. Word has length 246 [2018-10-25 02:02:29,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:02:29,571 INFO L481 AbstractCegarLoop]: Abstraction has 22370 states and 27931 transitions. [2018-10-25 02:02:29,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:02:29,571 INFO L276 IsEmpty]: Start isEmpty. Operand 22370 states and 27931 transitions. [2018-10-25 02:02:29,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-10-25 02:02:29,579 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:02:29,579 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:02:29,580 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:02:29,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:02:29,580 INFO L82 PathProgramCache]: Analyzing trace with hash -2034483145, now seen corresponding path program 1 times [2018-10-25 02:02:29,580 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:02:29,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:29,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:02:29,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:29,581 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:02:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:02:29,942 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:02:30,229 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 137 proven. 72 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-25 02:02:30,229 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:02:30,229 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:02:30,230 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 276 with the following transitions: [2018-10-25 02:02:30,230 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1158], [1166], [1174], [1178], [1180], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1408], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:02:30,235 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:02:30,235 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:02:30,579 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:02:30,579 INFO L272 AbstractInterpreter]: Visited 125 different actions 245 times. Merged at 7 different actions 7 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-25 02:02:30,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:02:30,616 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:02:30,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:02:30,616 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 02:02:30,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:02:30,626 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:02:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:02:30,712 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:02:31,051 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-25 02:02:31,051 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:02:31,221 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-25 02:02:31,243 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 02:02:31,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-25 02:02:31,243 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:02:31,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:02:31,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:02:31,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-25 02:02:31,245 INFO L87 Difference]: Start difference. First operand 22370 states and 27931 transitions. Second operand 3 states. [2018-10-25 02:02:33,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:02:33,990 INFO L93 Difference]: Finished difference Result 44734 states and 55856 transitions. [2018-10-25 02:02:33,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:02:33,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 275 [2018-10-25 02:02:33,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:02:34,062 INFO L225 Difference]: With dead ends: 44734 [2018-10-25 02:02:34,062 INFO L226 Difference]: Without dead ends: 22370 [2018-10-25 02:02:34,118 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 550 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-25 02:02:34,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22370 states. [2018-10-25 02:02:34,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22370 to 22370. [2018-10-25 02:02:34,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22370 states. [2018-10-25 02:02:34,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22370 states to 22370 states and 27185 transitions. [2018-10-25 02:02:34,556 INFO L78 Accepts]: Start accepts. Automaton has 22370 states and 27185 transitions. Word has length 275 [2018-10-25 02:02:34,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:02:34,557 INFO L481 AbstractCegarLoop]: Abstraction has 22370 states and 27185 transitions. [2018-10-25 02:02:34,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:02:34,557 INFO L276 IsEmpty]: Start isEmpty. Operand 22370 states and 27185 transitions. [2018-10-25 02:02:34,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-10-25 02:02:34,567 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:02:34,567 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-25 02:02:34,567 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:02:34,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:02:34,568 INFO L82 PathProgramCache]: Analyzing trace with hash 179750769, now seen corresponding path program 1 times [2018-10-25 02:02:34,568 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:02:34,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:34,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:02:34,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:34,569 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:02:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:02:35,023 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-25 02:02:35,023 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:02:35,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 02:02:35,024 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:02:35,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 02:02:35,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 02:02:35,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:02:35,025 INFO L87 Difference]: Start difference. First operand 22370 states and 27185 transitions. Second operand 4 states. [2018-10-25 02:02:44,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:02:44,057 INFO L93 Difference]: Finished difference Result 68100 states and 85016 transitions. [2018-10-25 02:02:44,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 02:02:44,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 297 [2018-10-25 02:02:44,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:02:44,170 INFO L225 Difference]: With dead ends: 68100 [2018-10-25 02:02:44,170 INFO L226 Difference]: Without dead ends: 38904 [2018-10-25 02:02:44,226 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:02:44,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38904 states. [2018-10-25 02:02:44,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38904 to 35826. [2018-10-25 02:02:44,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35826 states. [2018-10-25 02:02:44,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35826 states to 35826 states and 42470 transitions. [2018-10-25 02:02:44,887 INFO L78 Accepts]: Start accepts. Automaton has 35826 states and 42470 transitions. Word has length 297 [2018-10-25 02:02:44,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:02:44,888 INFO L481 AbstractCegarLoop]: Abstraction has 35826 states and 42470 transitions. [2018-10-25 02:02:44,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 02:02:44,888 INFO L276 IsEmpty]: Start isEmpty. Operand 35826 states and 42470 transitions. [2018-10-25 02:02:44,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-10-25 02:02:44,903 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:02:44,904 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-25 02:02:44,904 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:02:44,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:02:44,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1994528202, now seen corresponding path program 1 times [2018-10-25 02:02:44,905 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:02:44,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:44,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:02:44,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:44,906 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:02:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:02:45,402 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-10-25 02:02:45,402 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:02:45,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 02:02:45,403 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:02:45,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 02:02:45,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 02:02:45,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:02:45,404 INFO L87 Difference]: Start difference. First operand 35826 states and 42470 transitions. Second operand 4 states. [2018-10-25 02:02:51,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:02:51,981 INFO L93 Difference]: Finished difference Result 80831 states and 96161 transitions. [2018-10-25 02:02:51,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 02:02:51,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 380 [2018-10-25 02:02:51,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:02:52,456 INFO L225 Difference]: With dead ends: 80831 [2018-10-25 02:02:52,456 INFO L226 Difference]: Without dead ends: 45011 [2018-10-25 02:02:52,502 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:02:52,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45011 states. [2018-10-25 02:02:53,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45011 to 43676. [2018-10-25 02:02:53,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43676 states. [2018-10-25 02:02:53,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43676 states to 43676 states and 51313 transitions. [2018-10-25 02:02:53,172 INFO L78 Accepts]: Start accepts. Automaton has 43676 states and 51313 transitions. Word has length 380 [2018-10-25 02:02:53,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:02:53,172 INFO L481 AbstractCegarLoop]: Abstraction has 43676 states and 51313 transitions. [2018-10-25 02:02:53,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 02:02:53,173 INFO L276 IsEmpty]: Start isEmpty. Operand 43676 states and 51313 transitions. [2018-10-25 02:02:53,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2018-10-25 02:02:53,195 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:02:53,195 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:02:53,195 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:02:53,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:02:53,196 INFO L82 PathProgramCache]: Analyzing trace with hash -11005462, now seen corresponding path program 1 times [2018-10-25 02:02:53,196 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:02:53,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:53,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:02:53,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:02:53,197 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:02:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:02:54,201 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:02:54,202 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:02:54,202 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:02:54,202 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 420 with the following transitions: [2018-10-25 02:02:54,204 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [273], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1158], [1166], [1174], [1178], [1180], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:02:54,217 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:02:54,217 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:02:55,351 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:02:55,352 INFO L272 AbstractInterpreter]: Visited 356 different actions 1054 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 02:02:55,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:02:55,390 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:02:55,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:02:55,391 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 02:02:55,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:02:55,403 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:02:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:02:55,536 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:02:56,094 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:02:56,094 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-10-25 02:02:57,182 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:02:57,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 02:02:57,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-25 02:02:57,204 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:02:57,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:02:57,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:02:57,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-10-25 02:02:57,205 INFO L87 Difference]: Start difference. First operand 43676 states and 51313 transitions. Second operand 6 states. [2018-10-25 02:02:57,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-25 02:02:57,207 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 02:02:57,212 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 02:02:57,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 02:02:57 BoogieIcfgContainer [2018-10-25 02:02:57,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 02:02:57,214 INFO L168 Benchmark]: Toolchain (without parser) took 245121.03 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 562.4 MB. Max. memory is 7.1 GB. [2018-10-25 02:02:57,215 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 02:02:57,215 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1653.00 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-25 02:02:57,216 INFO L168 Benchmark]: Boogie Procedure Inliner took 541.45 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -928.3 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-25 02:02:57,217 INFO L168 Benchmark]: Boogie Preprocessor took 264.13 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: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. [2018-10-25 02:02:57,218 INFO L168 Benchmark]: RCFGBuilder took 11809.06 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 465.8 MB). Peak memory consumption was 465.8 MB. Max. memory is 7.1 GB. [2018-10-25 02:02:57,219 INFO L168 Benchmark]: TraceAbstraction took 230847.90 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 1.0 GB). Free memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: -936.0 MB). Peak memory consumption was 78.0 MB. Max. memory is 7.1 GB. [2018-10-25 02:02:57,224 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1653.00 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 541.45 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -928.3 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 264.13 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: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11809.06 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 465.8 MB). Peak memory consumption was 465.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230847.90 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 1.0 GB). Free memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: -936.0 MB). Peak memory consumption was 78.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 200]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 200). Cancelled while BasicCegarLoop was constructing difference of abstraction (43676states) and FLOYD_HOARE automaton (currently 2 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 230.7s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 155.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4325 SDtfs, 13499 SDslu, 2144 SDs, 0 SdLazy, 25715 SolverSat, 6708 SolverUnsat, 22 SolverUnknown, 0 SolverNotchecked, 142.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2226 GetRequests, 2144 SyntacticMatches, 12 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 60.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43676occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.9s AbstIntTime, 4 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 4823 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 64.5s InterpolantComputationTime, 3524 NumberOfCodeBlocks, 3524 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 4575 ConstructedInterpolants, 145 QuantifiedInterpolants, 6192739 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1784 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 18 InterpolantComputations, 10 PerfectInterpolantSequences, 2311/2638 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown