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_label08_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:30:10,059 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:30:10,063 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:30:10,081 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:30:10,081 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:30:10,084 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:30:10,085 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:30:10,088 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:30:10,091 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:30:10,091 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:30:10,095 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:30:10,095 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:30:10,097 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:30:10,100 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:30:10,104 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:30:10,105 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:30:10,105 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:30:10,114 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:30:10,118 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:30:10,123 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:30:10,124 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:30:10,129 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:30:10,132 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:30:10,132 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:30:10,132 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:30:10,133 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:30:10,135 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:30:10,135 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:30:10,138 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:30:10,140 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:30:10,141 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:30:10,141 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:30:10,141 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:30:10,142 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:30:10,144 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:30:10,145 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:30:10,145 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 [2018-10-27 08:30:10,170 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:30:10,171 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:30:10,172 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:30:10,173 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:30:10,173 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:30:10,173 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:30:10,173 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:30:10,174 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:30:10,174 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:30:10,175 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:30:10,175 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:30:10,175 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:30:10,175 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:30:10,176 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:30:10,177 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:30:10,177 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:30:10,177 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:30:10,177 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:30:10,177 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:30:10,178 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:30:10,178 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:30:10,178 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:30:10,178 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:30:10,178 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:30:10,179 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:30:10,181 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:30:10,181 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:30:10,181 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:30:10,181 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:30:10,181 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:30:10,182 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:30:10,182 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:30:10,182 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:30:10,182 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:30:10,182 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:30:10,183 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:30:10,260 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:30:10,275 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:30:10,282 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:30:10,284 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:30:10,284 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:30:10,285 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label08_true-unreach-call.c [2018-10-27 08:30:10,348 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b79cd9bb7/461b1e1c921d47c49d06dcce0a501de3/FLAG5e616889b [2018-10-27 08:30:11,077 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:30:11,078 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label08_true-unreach-call.c [2018-10-27 08:30:11,113 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b79cd9bb7/461b1e1c921d47c49d06dcce0a501de3/FLAG5e616889b [2018-10-27 08:30:11,135 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b79cd9bb7/461b1e1c921d47c49d06dcce0a501de3 [2018-10-27 08:30:11,150 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:30:11,153 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:30:11,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:30:11,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:30:11,162 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:30:11,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:30:11" (1/1) ... [2018-10-27 08:30:11,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8de4687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:30:11, skipping insertion in model container [2018-10-27 08:30:11,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:30:11" (1/1) ... [2018-10-27 08:30:11,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:30:11,312 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:30:12,254 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:30:12,260 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:30:12,689 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:30:12,712 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:30:12,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:30:12 WrapperNode [2018-10-27 08:30:12,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:30:12,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:30:12,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:30:12,715 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:30:12,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:30:12" (1/1) ... [2018-10-27 08:30:12,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:30:12" (1/1) ... [2018-10-27 08:30:13,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:30:13,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:30:13,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:30:13,253 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:30:13,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:30:12" (1/1) ... [2018-10-27 08:30:13,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:30:12" (1/1) ... [2018-10-27 08:30:13,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:30:12" (1/1) ... [2018-10-27 08:30:13,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:30:12" (1/1) ... [2018-10-27 08:30:13,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:30:12" (1/1) ... [2018-10-27 08:30:13,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:30:12" (1/1) ... [2018-10-27 08:30:13,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:30:12" (1/1) ... [2018-10-27 08:30:13,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:30:13,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:30:13,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:30:13,624 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:30:13,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:30:12" (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 [2018-10-27 08:30:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:30:13,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:30:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:30:13,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:30:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:30:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:30:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:30:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:30:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:30:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:30:26,374 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:30:26,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:30:26 BoogieIcfgContainer [2018-10-27 08:30:26,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:30:26,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:30:26,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:30:26,382 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:30:26,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:30:11" (1/3) ... [2018-10-27 08:30:26,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b3a4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:30:26, skipping insertion in model container [2018-10-27 08:30:26,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:30:12" (2/3) ... [2018-10-27 08:30:26,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b3a4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:30:26, skipping insertion in model container [2018-10-27 08:30:26,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:30:26" (3/3) ... [2018-10-27 08:30:26,386 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label08_true-unreach-call.c [2018-10-27 08:30:26,397 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:30:26,407 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:30:26,426 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:30:26,478 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:30:26,478 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:30:26,478 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:30:26,478 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:30:26,478 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:30:26,479 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:30:26,479 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:30:26,479 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:30:26,516 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-27 08:30:26,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-27 08:30:26,528 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:30:26,529 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] [2018-10-27 08:30:26,531 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:30:26,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:30:26,539 INFO L82 PathProgramCache]: Analyzing trace with hash -494139234, now seen corresponding path program 1 times [2018-10-27 08:30:26,542 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:30:26,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:30:26,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:30:26,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:30:26,604 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:30:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:30:27,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:30:27,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:30:27,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:30:27,196 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:30:27,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:30:27,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:30:27,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:30:27,227 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-27 08:30:38,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:30:38,590 INFO L93 Difference]: Finished difference Result 2139 states and 3961 transitions. [2018-10-27 08:30:38,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:30:38,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2018-10-27 08:30:38,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:30:38,626 INFO L225 Difference]: With dead ends: 2139 [2018-10-27 08:30:38,626 INFO L226 Difference]: Without dead ends: 1529 [2018-10-27 08:30:38,637 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 [2018-10-27 08:30:38,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2018-10-27 08:30:38,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1527. [2018-10-27 08:30:38,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1527 states. [2018-10-27 08:30:38,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2413 transitions. [2018-10-27 08:30:38,821 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2413 transitions. Word has length 65 [2018-10-27 08:30:38,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:30:38,822 INFO L481 AbstractCegarLoop]: Abstraction has 1527 states and 2413 transitions. [2018-10-27 08:30:38,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:30:38,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2413 transitions. [2018-10-27 08:30:38,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-27 08:30:38,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:30:38,843 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:30:38,844 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:30:38,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:30:38,845 INFO L82 PathProgramCache]: Analyzing trace with hash 920040521, now seen corresponding path program 1 times [2018-10-27 08:30:38,845 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:30:38,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:30:38,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:30:38,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:30:38,848 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:30:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:30:39,392 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:30:39,392 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:30:39,393 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:30:39,394 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 141 with the following transitions: [2018-10-27 08:30:39,396 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], [1130], [1132], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:30:39,447 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:30:39,447 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:30:40,553 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:30:40,555 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. [2018-10-27 08:30:40,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:30:40,595 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:30:40,595 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:30:40,595 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 [2018-10-27 08:30:40,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:30:40,621 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:30:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:30:40,745 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:31:07,662 WARN L179 SmtUtils]: Spent 24.31 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-27 08:31:27,974 WARN L179 SmtUtils]: Spent 16.11 s on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-10-27 08:31:28,844 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 4 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:31:28,845 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:31:29,555 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-10-27 08:31:33,796 WARN L179 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-10-27 08:31:33,847 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-10-27 08:31:36,685 WARN L179 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-10-27 08:31:37,020 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:31:37,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 08:31:37,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-27 08:31:37,043 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:31:37,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:31:37,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:31:37,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=161, Unknown=4, NotChecked=0, Total=210 [2018-10-27 08:31:37,045 INFO L87 Difference]: Start difference. First operand 1527 states and 2413 transitions. Second operand 6 states. [2018-10-27 08:32:46,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:32:46,103 INFO L93 Difference]: Finished difference Result 5757 states and 9378 transitions. [2018-10-27 08:32:46,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:32:46,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-10-27 08:32:46,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:32:46,143 INFO L225 Difference]: With dead ends: 5757 [2018-10-27 08:32:46,143 INFO L226 Difference]: Without dead ends: 4236 [2018-10-27 08:32:46,155 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 274 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 54.8s TimeCoverageRelationStatistics Valid=45, Invalid=161, Unknown=4, NotChecked=0, Total=210 [2018-10-27 08:32:46,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4236 states. [2018-10-27 08:32:46,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4236 to 4203. [2018-10-27 08:32:46,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4203 states. [2018-10-27 08:32:46,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4203 states to 4203 states and 6444 transitions. [2018-10-27 08:32:46,302 INFO L78 Accepts]: Start accepts. Automaton has 4203 states and 6444 transitions. Word has length 140 [2018-10-27 08:32:46,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:32:46,303 INFO L481 AbstractCegarLoop]: Abstraction has 4203 states and 6444 transitions. [2018-10-27 08:32:46,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:32:46,303 INFO L276 IsEmpty]: Start isEmpty. Operand 4203 states and 6444 transitions. [2018-10-27 08:32:46,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-27 08:32:46,310 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:32:46,310 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:32:46,311 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:32:46,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:32:46,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1346588434, now seen corresponding path program 1 times [2018-10-27 08:32:46,311 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:32:46,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:32:46,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:32:46,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:32:46,313 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:32:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:32:46,624 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:32:47,013 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:32:47,014 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:32:47,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:32:47,014 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:32:47,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:32:47,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:32:47,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:32:47,016 INFO L87 Difference]: Start difference. First operand 4203 states and 6444 transitions. Second operand 6 states. [2018-10-27 08:32:55,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:32:55,089 INFO L93 Difference]: Finished difference Result 12535 states and 20182 transitions. [2018-10-27 08:32:55,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:32:55,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2018-10-27 08:32:55,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:32:55,147 INFO L225 Difference]: With dead ends: 12535 [2018-10-27 08:32:55,147 INFO L226 Difference]: Without dead ends: 8338 [2018-10-27 08:32:55,170 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:32:55,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8338 states. [2018-10-27 08:32:55,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8338 to 8281. [2018-10-27 08:32:55,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8281 states. [2018-10-27 08:32:55,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 12220 transitions. [2018-10-27 08:32:55,523 INFO L78 Accepts]: Start accepts. Automaton has 8281 states and 12220 transitions. Word has length 181 [2018-10-27 08:32:55,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:32:55,524 INFO L481 AbstractCegarLoop]: Abstraction has 8281 states and 12220 transitions. [2018-10-27 08:32:55,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:32:55,524 INFO L276 IsEmpty]: Start isEmpty. Operand 8281 states and 12220 transitions. [2018-10-27 08:32:55,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-27 08:32:55,530 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:32:55,531 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:32:55,531 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:32:55,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:32:55,531 INFO L82 PathProgramCache]: Analyzing trace with hash 2089828530, now seen corresponding path program 1 times [2018-10-27 08:32:55,531 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:32:55,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:32:55,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:32:55,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:32:55,533 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:32:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:32:56,169 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:32:56,169 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:32:56,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-27 08:32:56,169 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:32:56,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 08:32:56,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 08:32:56,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 08:32:56,171 INFO L87 Difference]: Start difference. First operand 8281 states and 12220 transitions. Second operand 7 states. [2018-10-27 08:33:22,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:33:22,031 INFO L93 Difference]: Finished difference Result 24790 states and 43235 transitions. [2018-10-27 08:33:22,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 08:33:22,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 199 [2018-10-27 08:33:22,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:33:22,406 INFO L225 Difference]: With dead ends: 24790 [2018-10-27 08:33:22,406 INFO L226 Difference]: Without dead ends: 16515 [2018-10-27 08:33:22,481 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:33:22,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16515 states. [2018-10-27 08:33:23,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16515 to 16248. [2018-10-27 08:33:23,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16248 states. [2018-10-27 08:33:23,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16248 states to 16248 states and 25935 transitions. [2018-10-27 08:33:23,112 INFO L78 Accepts]: Start accepts. Automaton has 16248 states and 25935 transitions. Word has length 199 [2018-10-27 08:33:23,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:33:23,113 INFO L481 AbstractCegarLoop]: Abstraction has 16248 states and 25935 transitions. [2018-10-27 08:33:23,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 08:33:23,113 INFO L276 IsEmpty]: Start isEmpty. Operand 16248 states and 25935 transitions. [2018-10-27 08:33:23,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-27 08:33:23,126 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:33:23,127 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, 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] [2018-10-27 08:33:23,127 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:33:23,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:33:23,128 INFO L82 PathProgramCache]: Analyzing trace with hash -2112827723, now seen corresponding path program 1 times [2018-10-27 08:33:23,128 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:33:23,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:33:23,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:33:23,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:33:23,129 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:33:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:33:23,406 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:33:23,835 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 117 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-27 08:33:23,835 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:33:23,836 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:33:23,836 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-10-27 08:33:23,836 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], [1130], [1132], [1135], [1143], [1151], [1159], [1167], [1175], [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] [2018-10-27 08:33:23,846 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:33:23,847 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:33:24,535 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:33:24,536 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. [2018-10-27 08:33:24,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:33:24,571 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:33:24,571 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:33:24,572 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 [2018-10-27 08:33:24,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:33:24,590 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:33:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:33:24,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:33:25,110 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:33:25,110 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:33:26,042 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:33:26,075 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:33:26,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 08:33:26,075 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:33:26,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:33:26,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:33:26,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-27 08:33:26,077 INFO L87 Difference]: Start difference. First operand 16248 states and 25935 transitions. Second operand 9 states. [2018-10-27 08:33:33,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:33:33,808 INFO L93 Difference]: Finished difference Result 38341 states and 62708 transitions. [2018-10-27 08:33:33,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 08:33:33,815 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 223 [2018-10-27 08:33:33,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:33:33,933 INFO L225 Difference]: With dead ends: 38341 [2018-10-27 08:33:33,934 INFO L226 Difference]: Without dead ends: 22051 [2018-10-27 08:33:34,017 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 444 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-10-27 08:33:34,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22051 states. [2018-10-27 08:33:34,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22051 to 21976. [2018-10-27 08:33:34,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21976 states. [2018-10-27 08:33:34,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21976 states to 21976 states and 29605 transitions. [2018-10-27 08:33:34,628 INFO L78 Accepts]: Start accepts. Automaton has 21976 states and 29605 transitions. Word has length 223 [2018-10-27 08:33:34,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:33:34,628 INFO L481 AbstractCegarLoop]: Abstraction has 21976 states and 29605 transitions. [2018-10-27 08:33:34,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:33:34,629 INFO L276 IsEmpty]: Start isEmpty. Operand 21976 states and 29605 transitions. [2018-10-27 08:33:34,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-27 08:33:34,643 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:33:34,644 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, 2, 2, 2, 2, 2, 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] [2018-10-27 08:33:34,644 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:33:34,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:33:34,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1986426359, now seen corresponding path program 1 times [2018-10-27 08:33:34,644 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:33:34,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:33:34,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:33:34,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:33:34,647 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:33:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:33:34,963 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:33:35,772 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 130 proven. 66 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-27 08:33:35,772 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:33:35,772 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:33:35,773 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 241 with the following transitions: [2018-10-27 08:33:35,773 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], [1130], [1132], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:33:35,779 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:33:35,780 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:33:36,049 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:33:36,050 INFO L272 AbstractInterpreter]: Visited 97 different actions 190 times. Merged at 7 different actions 8 times. Never widened. Found 2 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 08:33:36,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:33:36,083 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:33:36,083 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:33:36,083 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 [2018-10-27 08:33:36,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:33:36,095 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:33:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:33:36,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:33:36,369 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-10-27 08:33:36,369 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:33:36,900 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-10-27 08:33:36,933 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:33:36,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-27 08:33:36,934 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:33:36,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:33:36,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:33:36,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:33:36,936 INFO L87 Difference]: Start difference. First operand 21976 states and 29605 transitions. Second operand 3 states. [2018-10-27 08:33:41,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:33:41,220 INFO L93 Difference]: Finished difference Result 43946 states and 59204 transitions. [2018-10-27 08:33:41,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:33:41,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2018-10-27 08:33:41,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:33:41,290 INFO L225 Difference]: With dead ends: 43946 [2018-10-27 08:33:41,290 INFO L226 Difference]: Without dead ends: 21976 [2018-10-27 08:33:41,363 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 480 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:33:41,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21976 states. [2018-10-27 08:33:41,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21976 to 21976. [2018-10-27 08:33:41,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21976 states. [2018-10-27 08:33:41,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21976 states to 21976 states and 28221 transitions. [2018-10-27 08:33:41,855 INFO L78 Accepts]: Start accepts. Automaton has 21976 states and 28221 transitions. Word has length 240 [2018-10-27 08:33:41,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:33:41,856 INFO L481 AbstractCegarLoop]: Abstraction has 21976 states and 28221 transitions. [2018-10-27 08:33:41,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:33:41,856 INFO L276 IsEmpty]: Start isEmpty. Operand 21976 states and 28221 transitions. [2018-10-27 08:33:41,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-27 08:33:41,867 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:33:41,867 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, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:33:41,868 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:33:41,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:33:41,868 INFO L82 PathProgramCache]: Analyzing trace with hash -165168311, now seen corresponding path program 1 times [2018-10-27 08:33:41,868 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:33:41,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:33:41,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:33:41,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:33:41,870 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:33:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:33:42,180 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-27 08:33:42,180 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:33:42,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 08:33:42,181 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:33:42,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:33:42,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:33:42,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:33:42,182 INFO L87 Difference]: Start difference. First operand 21976 states and 28221 transitions. Second operand 3 states. [2018-10-27 08:33:47,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:33:47,703 INFO L93 Difference]: Finished difference Result 62812 states and 83231 transitions. [2018-10-27 08:33:47,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:33:47,704 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 274 [2018-10-27 08:33:47,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:33:47,815 INFO L225 Difference]: With dead ends: 62812 [2018-10-27 08:33:47,815 INFO L226 Difference]: Without dead ends: 30625 [2018-10-27 08:33:47,899 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 [2018-10-27 08:33:47,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30625 states. [2018-10-27 08:33:48,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30625 to 28866. [2018-10-27 08:33:48,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28866 states. [2018-10-27 08:33:48,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28866 states to 28866 states and 35831 transitions. [2018-10-27 08:33:48,821 INFO L78 Accepts]: Start accepts. Automaton has 28866 states and 35831 transitions. Word has length 274 [2018-10-27 08:33:48,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:33:48,822 INFO L481 AbstractCegarLoop]: Abstraction has 28866 states and 35831 transitions. [2018-10-27 08:33:48,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:33:48,822 INFO L276 IsEmpty]: Start isEmpty. Operand 28866 states and 35831 transitions. [2018-10-27 08:33:48,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-10-27 08:33:48,839 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:33:48,840 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, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:33:48,840 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:33:48,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:33:48,840 INFO L82 PathProgramCache]: Analyzing trace with hash 763592295, now seen corresponding path program 1 times [2018-10-27 08:33:48,841 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:33:48,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:33:48,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:33:48,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:33:48,842 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:33:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:33:49,529 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-27 08:33:49,530 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:33:49,530 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:33:49,530 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 365 with the following transitions: [2018-10-27 08:33:49,531 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], [1130], [1132], [1135], [1143], [1151], [1159], [1167], [1175], [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], [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], [1893], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:33:49,538 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:33:49,539 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:33:50,075 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:33:50,076 INFO L272 AbstractInterpreter]: Visited 220 different actions 439 times. Merged at 7 different actions 11 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-27 08:33:50,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:33:50,104 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:33:50,104 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:33:50,105 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 [2018-10-27 08:33:50,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:33:50,116 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:33:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:33:50,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:33:50,569 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-27 08:33:50,569 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:33:51,618 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 121 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:33:51,658 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:33:51,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 14 [2018-10-27 08:33:51,659 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:33:51,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:33:51,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:33:51,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-10-27 08:33:51,661 INFO L87 Difference]: Start difference. First operand 28866 states and 35831 transitions. Second operand 9 states. [2018-10-27 08:34:12,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:34:12,976 INFO L93 Difference]: Finished difference Result 82654 states and 107380 transitions. [2018-10-27 08:34:12,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-27 08:34:12,977 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 364 [2018-10-27 08:34:12,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:34:13,174 INFO L225 Difference]: With dead ends: 82654 [2018-10-27 08:34:13,175 INFO L226 Difference]: Without dead ends: 53792 [2018-10-27 08:34:13,246 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 722 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2018-10-27 08:34:13,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53792 states. [2018-10-27 08:34:14,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53792 to 50128. [2018-10-27 08:34:14,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50128 states. [2018-10-27 08:34:14,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50128 states to 50128 states and 61405 transitions. [2018-10-27 08:34:14,535 INFO L78 Accepts]: Start accepts. Automaton has 50128 states and 61405 transitions. Word has length 364 [2018-10-27 08:34:14,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:34:14,536 INFO L481 AbstractCegarLoop]: Abstraction has 50128 states and 61405 transitions. [2018-10-27 08:34:14,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:34:14,536 INFO L276 IsEmpty]: Start isEmpty. Operand 50128 states and 61405 transitions. [2018-10-27 08:34:14,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-10-27 08:34:14,552 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:34:14,552 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:34:14,553 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:34:14,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:34:14,553 INFO L82 PathProgramCache]: Analyzing trace with hash 712789234, now seen corresponding path program 1 times [2018-10-27 08:34:14,553 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:34:14,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:34:14,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:34:14,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:34:14,554 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:34:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-27 08:34:15,125 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 4 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:34:15,125 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:34:15,125 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:34:15,126 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 414 with the following transitions: [2018-10-27 08:34:15,126 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], [1130], [1132], [1135], [1143], [1151], [1159], [1167], [1175], [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] [2018-10-27 08:34:15,136 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:34:15,136 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:34:15,137 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-27 08:34:15,138 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-27 08:34:15,138 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 08:34:15,138 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:34:15,138 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:34:15,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:34:15,153 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:34:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:34:15,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:34:15,273 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 08:34:15,474 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:34:15,474 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 08:34:15,481 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 08:34:15,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:34:15 BoogieIcfgContainer [2018-10-27 08:34:15,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 08:34:15,482 INFO L168 Benchmark]: Toolchain (without parser) took 244331.31 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -991.4 MB). Peak memory consumption was 920.2 MB. Max. memory is 7.1 GB. [2018-10-27 08:34:15,483 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-27 08:34:15,484 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1558.18 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. [2018-10-27 08:34:15,485 INFO L168 Benchmark]: Boogie Procedure Inliner took 536.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 782.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -931.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-27 08:34:15,485 INFO L168 Benchmark]: Boogie Preprocessor took 372.34 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: 29.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. [2018-10-27 08:34:15,486 INFO L168 Benchmark]: RCFGBuilder took 12752.96 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: 470.8 MB). Peak memory consumption was 470.8 MB. Max. memory is 7.1 GB. [2018-10-27 08:34:15,487 INFO L168 Benchmark]: TraceAbstraction took 229103.26 ms. Allocated memory was 2.3 GB in the beginning and 3.4 GB in the end (delta: 1.1 GB). Free memory was 1.7 GB in the beginning and 2.4 GB in the end (delta: -697.5 MB). Peak memory consumption was 431.9 MB. Max. memory is 7.1 GB. [2018-10-27 08:34:15,492 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 1558.18 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 536.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 782.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -931.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 372.34 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: 29.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12752.96 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: 470.8 MB). Peak memory consumption was 470.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229103.26 ms. Allocated memory was 2.3 GB in the beginning and 3.4 GB in the end (delta: 1.1 GB). Free memory was 1.7 GB in the beginning and 2.4 GB in the end (delta: -697.5 MB). Peak memory consumption was 431.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 182]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 182). Cancelled while BasicCegarLoop was analyzing trace of length 414 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 229.0s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 154.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3084 SDtfs, 14817 SDslu, 2397 SDs, 0 SdLazy, 28198 SolverSat, 6625 SolverUnsat, 23 SolverUnknown, 0 SolverNotchecked, 141.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2021 GetRequests, 1933 SyntacticMatches, 12 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 60.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50128occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.8s AbstIntTime, 5 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 5857 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 64.1s InterpolantComputationTime, 2653 NumberOfCodeBlocks, 2653 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 3604 ConstructedInterpolants, 232 QuantifiedInterpolants, 5540075 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1702 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 16 InterpolantComputations, 7 PerfectInterpolantSequences, 2012/2288 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown