java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label25_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 02:45:28,137 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 02:45:28,139 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 02:45:28,153 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 02:45:28,153 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 02:45:28,155 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 02:45:28,156 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 02:45:28,158 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 02:45:28,159 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 02:45:28,160 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 02:45:28,161 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 02:45:28,162 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 02:45:28,163 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 02:45:28,163 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 02:45:28,165 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 02:45:28,166 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 02:45:28,166 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 02:45:28,168 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 02:45:28,171 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 02:45:28,172 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 02:45:28,174 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 02:45:28,175 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 02:45:28,178 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 02:45:28,178 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 02:45:28,178 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 02:45:28,179 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 02:45:28,180 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 02:45:28,181 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 02:45:28,182 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 02:45:28,183 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 02:45:28,183 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 02:45:28,184 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 02:45:28,184 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 02:45:28,185 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 02:45:28,186 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 02:45:28,186 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 02:45:28,187 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 02:45:28,203 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 02:45:28,204 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 02:45:28,204 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 02:45:28,205 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 02:45:28,205 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 02:45:28,205 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 02:45:28,205 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 02:45:28,205 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 02:45:28,206 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 02:45:28,206 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 02:45:28,206 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 02:45:28,206 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 02:45:28,207 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 02:45:28,207 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 02:45:28,207 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 02:45:28,208 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 02:45:28,208 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 02:45:28,208 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 02:45:28,208 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 02:45:28,208 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 02:45:28,209 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 02:45:28,209 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 02:45:28,209 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 02:45:28,209 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 02:45:28,209 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 02:45:28,210 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 02:45:28,210 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 02:45:28,210 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 02:45:28,210 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 02:45:28,210 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 02:45:28,211 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 02:45:28,211 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 02:45:28,211 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 02:45:28,211 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 02:45:28,255 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 02:45:28,272 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 02:45:28,277 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 02:45:28,278 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 02:45:28,279 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 02:45:28,280 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label25_true-unreach-call.c [2018-11-07 02:45:28,352 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fd8f5ebd/4b9940684c25431f88c15d4460f5c76a/FLAGb2b41347f [2018-11-07 02:45:28,927 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 02:45:28,928 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label25_true-unreach-call.c [2018-11-07 02:45:28,949 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fd8f5ebd/4b9940684c25431f88c15d4460f5c76a/FLAGb2b41347f [2018-11-07 02:45:28,970 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fd8f5ebd/4b9940684c25431f88c15d4460f5c76a [2018-11-07 02:45:28,983 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 02:45:28,985 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 02:45:28,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 02:45:28,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 02:45:28,995 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 02:45:28,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:45:28" (1/1) ... [2018-11-07 02:45:28,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4688d22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:28, skipping insertion in model container [2018-11-07 02:45:29,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:45:28" (1/1) ... [2018-11-07 02:45:29,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 02:45:29,095 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 02:45:29,603 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:45:29,613 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 02:45:29,768 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:45:29,795 INFO L193 MainTranslator]: Completed translation [2018-11-07 02:45:29,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:29 WrapperNode [2018-11-07 02:45:29,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 02:45:29,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 02:45:29,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 02:45:29,798 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 02:45:29,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:29" (1/1) ... [2018-11-07 02:45:29,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:29" (1/1) ... [2018-11-07 02:45:29,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 02:45:29,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 02:45:29,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 02:45:29,961 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 02:45:29,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:29" (1/1) ... [2018-11-07 02:45:29,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:29" (1/1) ... [2018-11-07 02:45:29,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:29" (1/1) ... [2018-11-07 02:45:29,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:29" (1/1) ... [2018-11-07 02:45:30,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:29" (1/1) ... [2018-11-07 02:45:30,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:29" (1/1) ... [2018-11-07 02:45:30,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:29" (1/1) ... [2018-11-07 02:45:30,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 02:45:30,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 02:45:30,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 02:45:30,050 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 02:45:30,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 02:45:30,134 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 02:45:30,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 02:45:30,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 02:45:30,135 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 02:45:30,135 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 02:45:30,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 02:45:30,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 02:45:30,136 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 02:45:30,136 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 02:45:33,257 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 02:45:33,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:45:33 BoogieIcfgContainer [2018-11-07 02:45:33,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 02:45:33,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 02:45:33,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 02:45:33,263 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 02:45:33,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:45:28" (1/3) ... [2018-11-07 02:45:33,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e75b57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:45:33, skipping insertion in model container [2018-11-07 02:45:33,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:29" (2/3) ... [2018-11-07 02:45:33,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e75b57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:45:33, skipping insertion in model container [2018-11-07 02:45:33,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:45:33" (3/3) ... [2018-11-07 02:45:33,268 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label25_true-unreach-call.c [2018-11-07 02:45:33,278 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 02:45:33,286 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 02:45:33,303 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 02:45:33,344 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 02:45:33,344 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 02:45:33,344 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 02:45:33,344 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 02:45:33,345 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 02:45:33,345 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 02:45:33,345 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 02:45:33,345 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 02:45:33,374 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-11-07 02:45:33,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-07 02:45:33,386 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:45:33,387 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] [2018-11-07 02:45:33,390 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:45:33,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:33,397 INFO L82 PathProgramCache]: Analyzing trace with hash 382760497, now seen corresponding path program 1 times [2018-11-07 02:45:33,400 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:45:33,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:33,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:45:33,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:33,451 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:45:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:45:33,990 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 02:45:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:45:34,123 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:45:34,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 02:45:34,124 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:45:34,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 02:45:34,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 02:45:34,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 02:45:34,154 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-11-07 02:45:36,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:45:36,019 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-11-07 02:45:36,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 02:45:36,024 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2018-11-07 02:45:36,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:45:36,042 INFO L225 Difference]: With dead ends: 574 [2018-11-07 02:45:36,043 INFO L226 Difference]: Without dead ends: 356 [2018-11-07 02:45:36,050 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 02:45:36,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-11-07 02:45:36,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-11-07 02:45:36,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-11-07 02:45:36,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 592 transitions. [2018-11-07 02:45:36,160 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 592 transitions. Word has length 71 [2018-11-07 02:45:36,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:45:36,162 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 592 transitions. [2018-11-07 02:45:36,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 02:45:36,163 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 592 transitions. [2018-11-07 02:45:36,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-11-07 02:45:36,181 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:45:36,185 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] [2018-11-07 02:45:36,186 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:45:36,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:36,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1446129720, now seen corresponding path program 1 times [2018-11-07 02:45:36,187 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:45:36,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:36,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:45:36,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:36,191 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:45:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:45:36,584 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:45:36,584 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:45:36,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 02:45:36,585 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:45:36,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 02:45:36,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 02:45:36,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 02:45:36,588 INFO L87 Difference]: Start difference. First operand 356 states and 592 transitions. Second operand 6 states. [2018-11-07 02:45:39,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:45:39,058 INFO L93 Difference]: Finished difference Result 1002 states and 1689 transitions. [2018-11-07 02:45:39,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:45:39,059 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-11-07 02:45:39,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:45:39,066 INFO L225 Difference]: With dead ends: 1002 [2018-11-07 02:45:39,066 INFO L226 Difference]: Without dead ends: 652 [2018-11-07 02:45:39,070 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 02:45:39,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2018-11-07 02:45:39,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 640. [2018-11-07 02:45:39,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2018-11-07 02:45:39,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 960 transitions. [2018-11-07 02:45:39,116 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 960 transitions. Word has length 141 [2018-11-07 02:45:39,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:45:39,117 INFO L480 AbstractCegarLoop]: Abstraction has 640 states and 960 transitions. [2018-11-07 02:45:39,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 02:45:39,118 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 960 transitions. [2018-11-07 02:45:39,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-11-07 02:45:39,122 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:45:39,122 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] [2018-11-07 02:45:39,125 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:45:39,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:39,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1467562684, now seen corresponding path program 1 times [2018-11-07 02:45:39,126 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:45:39,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:39,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:45:39,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:39,127 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:45:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:45:39,330 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:45:39,330 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:45:39,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 02:45:39,331 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:45:39,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 02:45:39,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 02:45:39,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 02:45:39,333 INFO L87 Difference]: Start difference. First operand 640 states and 960 transitions. Second operand 4 states. [2018-11-07 02:45:42,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:45:42,691 INFO L93 Difference]: Finished difference Result 2128 states and 3336 transitions. [2018-11-07 02:45:42,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 02:45:42,694 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2018-11-07 02:45:42,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:45:42,706 INFO L225 Difference]: With dead ends: 2128 [2018-11-07 02:45:42,707 INFO L226 Difference]: Without dead ends: 904 [2018-11-07 02:45:42,717 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 02:45:42,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2018-11-07 02:45:42,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 904. [2018-11-07 02:45:42,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2018-11-07 02:45:42,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1277 transitions. [2018-11-07 02:45:42,776 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1277 transitions. Word has length 151 [2018-11-07 02:45:42,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:45:42,777 INFO L480 AbstractCegarLoop]: Abstraction has 904 states and 1277 transitions. [2018-11-07 02:45:42,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 02:45:42,777 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1277 transitions. [2018-11-07 02:45:42,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-11-07 02:45:42,782 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:45:42,783 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] [2018-11-07 02:45:42,783 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:45:42,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:42,785 INFO L82 PathProgramCache]: Analyzing trace with hash -774507349, now seen corresponding path program 1 times [2018-11-07 02:45:42,785 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:45:42,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:42,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:45:42,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:42,787 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:45:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:45:43,124 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 02:45:43,459 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:45:43,459 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:45:43,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 02:45:43,460 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:45:43,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 02:45:43,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 02:45:43,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 02:45:43,461 INFO L87 Difference]: Start difference. First operand 904 states and 1277 transitions. Second operand 6 states. [2018-11-07 02:45:46,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:45:46,443 INFO L93 Difference]: Finished difference Result 2127 states and 3078 transitions. [2018-11-07 02:45:46,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:45:46,452 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 194 [2018-11-07 02:45:46,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:45:46,464 INFO L225 Difference]: With dead ends: 2127 [2018-11-07 02:45:46,465 INFO L226 Difference]: Without dead ends: 1229 [2018-11-07 02:45:46,469 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 02:45:46,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2018-11-07 02:45:46,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1208. [2018-11-07 02:45:46,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1208 states. [2018-11-07 02:45:46,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1646 transitions. [2018-11-07 02:45:46,526 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1646 transitions. Word has length 194 [2018-11-07 02:45:46,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:45:46,526 INFO L480 AbstractCegarLoop]: Abstraction has 1208 states and 1646 transitions. [2018-11-07 02:45:46,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 02:45:46,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1646 transitions. [2018-11-07 02:45:46,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-11-07 02:45:46,534 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:45:46,534 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:45:46,534 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:45:46,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:46,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1703489504, now seen corresponding path program 1 times [2018-11-07 02:45:46,535 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:45:46,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:46,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:45:46,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:46,536 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:45:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:45:47,147 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 128 proven. 78 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 02:45:47,148 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:45:47,148 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:45:47,150 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 243 with the following transitions: [2018-11-07 02:45:47,154 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [469], [471], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [547], [551], [555], [559], [563], [566], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 02:45:47,275 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:45:47,275 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:45:50,438 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:45:50,439 INFO L272 AbstractInterpreter]: Visited 93 different actions 93 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 02:45:50,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:50,449 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:45:55,133 INFO L227 lantSequenceWeakener]: Weakened 221 states. On average, predicates are now at 74.05% of their original sizes. [2018-11-07 02:45:55,133 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:45:59,978 INFO L415 sIntCurrentIteration]: We unified 241 AI predicates to 241 [2018-11-07 02:45:59,978 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:45:59,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:45:59,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-11-07 02:45:59,979 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:45:59,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 02:45:59,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 02:45:59,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 02:45:59,981 INFO L87 Difference]: Start difference. First operand 1208 states and 1646 transitions. Second operand 10 states. [2018-11-07 02:46:12,961 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:46:49,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:46:49,580 INFO L93 Difference]: Finished difference Result 2559 states and 3488 transitions. [2018-11-07 02:46:49,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 02:46:49,580 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 242 [2018-11-07 02:46:49,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:46:49,588 INFO L225 Difference]: With dead ends: 2559 [2018-11-07 02:46:49,589 INFO L226 Difference]: Without dead ends: 1357 [2018-11-07 02:46:49,594 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 245 GetRequests, 204 SyntacticMatches, 29 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-07 02:46:49,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2018-11-07 02:46:49,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1352. [2018-11-07 02:46:49,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2018-11-07 02:46:49,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1796 transitions. [2018-11-07 02:46:49,681 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1796 transitions. Word has length 242 [2018-11-07 02:46:49,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:46:49,681 INFO L480 AbstractCegarLoop]: Abstraction has 1352 states and 1796 transitions. [2018-11-07 02:46:49,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 02:46:49,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1796 transitions. [2018-11-07 02:46:49,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-11-07 02:46:49,693 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:46:49,693 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, 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] [2018-11-07 02:46:49,694 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:46:49,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:46:49,694 INFO L82 PathProgramCache]: Analyzing trace with hash -677086258, now seen corresponding path program 1 times [2018-11-07 02:46:49,694 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:46:49,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:46:49,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:46:49,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:46:49,696 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:46:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:46:50,241 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-07 02:46:50,574 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2018-11-07 02:46:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 266 proven. 82 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-07 02:46:51,176 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:46:51,176 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:46:51,176 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 314 with the following transitions: [2018-11-07 02:46:51,176 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [469], [471], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [547], [551], [555], [559], [563], [566], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 02:46:51,182 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:46:51,182 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:46:52,423 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:46:56,494 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:46:56,495 INFO L272 AbstractInterpreter]: Visited 97 different actions 278 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 02:46:56,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:46:56,500 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:46:58,873 INFO L227 lantSequenceWeakener]: Weakened 103 states. On average, predicates are now at 75.71% of their original sizes. [2018-11-07 02:46:58,874 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:47:09,479 INFO L415 sIntCurrentIteration]: We unified 312 AI predicates to 312 [2018-11-07 02:47:09,479 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:47:09,479 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:47:09,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [14] total 33 [2018-11-07 02:47:09,480 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:47:09,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 02:47:09,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 02:47:09,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2018-11-07 02:47:09,482 INFO L87 Difference]: Start difference. First operand 1352 states and 1796 transitions. Second operand 21 states. Received shutdown request... [2018-11-07 02:49:13,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-07 02:49:13,042 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 02:49:13,047 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 02:49:13,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:49:13 BoogieIcfgContainer [2018-11-07 02:49:13,048 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 02:49:13,048 INFO L168 Benchmark]: Toolchain (without parser) took 224065.07 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -501.2 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 02:49:13,050 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 02:49:13,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 810.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 02:49:13,051 INFO L168 Benchmark]: Boogie Procedure Inliner took 162.85 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -853.2 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2018-11-07 02:49:13,052 INFO L168 Benchmark]: Boogie Preprocessor took 88.72 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 02:49:13,053 INFO L168 Benchmark]: RCFGBuilder took 3208.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 117.5 MB). Peak memory consumption was 117.5 MB. Max. memory is 7.1 GB. [2018-11-07 02:49:13,054 INFO L168 Benchmark]: TraceAbstraction took 219788.33 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 192.1 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-07 02:49:13,058 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 810.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 162.85 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -853.2 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.72 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3208.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 117.5 MB). Peak memory consumption was 117.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219788.33 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 192.1 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 196). Cancelled while BasicCegarLoop was constructing difference of abstraction (1352states) and FLOYD_HOARE automaton (currently 33 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (1765 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 219.7s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 183.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 616 SDtfs, 4399 SDslu, 422 SDs, 0 SdLazy, 4925 SolverSat, 987 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 607 GetRequests, 498 SyntacticMatches, 41 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 23.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1352occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9955807584453705 AbsIntWeakeningRatio, 0.10488245931283906 AbsIntAvgWeakeningVarsNumRemoved, 449.48282097649184 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 38 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 1112 NumberOfCodeBlocks, 1112 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1106 ConstructedInterpolants, 0 QuantifiedInterpolants, 1448293 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 660/820 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown