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/Problem01_label42_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 01:04:22,117 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 01:04:22,119 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 01:04:22,135 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 01:04:22,135 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 01:04:22,136 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 01:04:22,139 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 01:04:22,141 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 01:04:22,143 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 01:04:22,144 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 01:04:22,153 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 01:04:22,154 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 01:04:22,155 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 01:04:22,156 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 01:04:22,157 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 01:04:22,158 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 01:04:22,159 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 01:04:22,161 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 01:04:22,162 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 01:04:22,164 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 01:04:22,165 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 01:04:22,166 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 01:04:22,168 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 01:04:22,175 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 01:04:22,175 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 01:04:22,176 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 01:04:22,176 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 01:04:22,177 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 01:04:22,192 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 01:04:22,192 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 01:04:22,193 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 01:04:22,193 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 01:04:22,194 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 01:04:22,194 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 01:04:22,194 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 01:04:22,194 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 01:04:22,194 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 01:04:22,195 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 01:04:22,195 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 01:04:22,195 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 01:04:22,196 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 01:04:22,196 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 01:04:22,196 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 01:04:22,196 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 01:04:22,196 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 01:04:22,197 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 01:04:22,197 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 01:04:22,197 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 01:04:22,197 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 01:04:22,197 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 01:04:22,198 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 01:04:22,198 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 01:04:22,198 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 01:04:22,198 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 01:04:22,198 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 01:04:22,198 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 01:04:22,199 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 01:04:22,199 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 01:04:22,199 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 01:04:22,199 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 01:04:22,199 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 01:04:22,200 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 01:04:22,246 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 01:04:22,265 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 01:04:22,271 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 01:04:22,272 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 01:04:22,273 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 01:04:22,274 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label42_true-unreach-call_false-termination.c [2018-11-07 01:04:22,333 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/158e70de7/90933c5cfaf04ba5987c183aa6d8255b/FLAG59477e48d [2018-11-07 01:04:22,957 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 01:04:22,958 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label42_true-unreach-call_false-termination.c [2018-11-07 01:04:22,980 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/158e70de7/90933c5cfaf04ba5987c183aa6d8255b/FLAG59477e48d [2018-11-07 01:04:23,009 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/158e70de7/90933c5cfaf04ba5987c183aa6d8255b [2018-11-07 01:04:23,023 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 01:04:23,025 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 01:04:23,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 01:04:23,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 01:04:23,031 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 01:04:23,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:04:23" (1/1) ... [2018-11-07 01:04:23,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d73b804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:23, skipping insertion in model container [2018-11-07 01:04:23,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:04:23" (1/1) ... [2018-11-07 01:04:23,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 01:04:23,112 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 01:04:23,661 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:04:23,667 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 01:04:23,769 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:04:23,791 INFO L193 MainTranslator]: Completed translation [2018-11-07 01:04:23,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:23 WrapperNode [2018-11-07 01:04:23,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 01:04:23,793 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 01:04:23,793 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 01:04:23,793 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 01:04:23,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:23" (1/1) ... [2018-11-07 01:04:23,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:23" (1/1) ... [2018-11-07 01:04:23,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 01:04:23,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 01:04:23,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 01:04:23,934 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 01:04:23,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:23" (1/1) ... [2018-11-07 01:04:23,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:23" (1/1) ... [2018-11-07 01:04:23,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:23" (1/1) ... [2018-11-07 01:04:23,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:23" (1/1) ... [2018-11-07 01:04:24,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:23" (1/1) ... [2018-11-07 01:04:24,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:23" (1/1) ... [2018-11-07 01:04:24,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:23" (1/1) ... [2018-11-07 01:04:24,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 01:04:24,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 01:04:24,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 01:04:24,064 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 01:04:24,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:23" (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 01:04:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 01:04:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 01:04:24,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 01:04:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 01:04:24,142 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 01:04:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 01:04:24,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 01:04:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 01:04:24,142 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 01:04:27,276 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 01:04:27,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:04:27 BoogieIcfgContainer [2018-11-07 01:04:27,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 01:04:27,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 01:04:27,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 01:04:27,282 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 01:04:27,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:04:23" (1/3) ... [2018-11-07 01:04:27,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486f34d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:04:27, skipping insertion in model container [2018-11-07 01:04:27,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:23" (2/3) ... [2018-11-07 01:04:27,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486f34d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:04:27, skipping insertion in model container [2018-11-07 01:04:27,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:04:27" (3/3) ... [2018-11-07 01:04:27,287 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label42_true-unreach-call_false-termination.c [2018-11-07 01:04:27,297 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 01:04:27,308 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 01:04:27,327 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 01:04:27,371 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 01:04:27,372 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 01:04:27,372 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 01:04:27,372 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 01:04:27,372 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 01:04:27,373 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 01:04:27,373 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 01:04:27,373 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 01:04:27,401 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-11-07 01:04:27,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-11-07 01:04:27,423 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:04:27,424 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:27,427 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:04:27,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:04:27,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1053299728, now seen corresponding path program 1 times [2018-11-07 01:04:27,438 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:04:27,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:04:27,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:04:27,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:04:27,499 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:04:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:04:28,137 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 01:04:28,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:04:28,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 01:04:28,141 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:04:28,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 01:04:28,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 01:04:28,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:04:28,168 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-11-07 01:04:29,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:04:29,872 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-11-07 01:04:29,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 01:04:29,873 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2018-11-07 01:04:29,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:04:29,892 INFO L225 Difference]: With dead ends: 550 [2018-11-07 01:04:29,892 INFO L226 Difference]: Without dead ends: 340 [2018-11-07 01:04:29,899 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:04:29,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-11-07 01:04:29,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-11-07 01:04:29,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-11-07 01:04:29,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 553 transitions. [2018-11-07 01:04:29,996 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 553 transitions. Word has length 122 [2018-11-07 01:04:29,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:04:29,998 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 553 transitions. [2018-11-07 01:04:29,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 01:04:29,998 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 553 transitions. [2018-11-07 01:04:30,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-11-07 01:04:30,009 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:04:30,009 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 01:04:30,010 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:04:30,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:04:30,010 INFO L82 PathProgramCache]: Analyzing trace with hash -693386961, now seen corresponding path program 1 times [2018-11-07 01:04:30,010 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:04:30,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:04:30,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:04:30,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:04:30,012 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:04:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:04:30,235 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:04:30,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:04:30,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 01:04:30,236 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:04:30,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 01:04:30,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 01:04:30,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 01:04:30,239 INFO L87 Difference]: Start difference. First operand 340 states and 553 transitions. Second operand 6 states. [2018-11-07 01:04:32,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:04:32,096 INFO L93 Difference]: Finished difference Result 1075 states and 1835 transitions. [2018-11-07 01:04:32,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 01:04:32,099 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-11-07 01:04:32,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:04:32,110 INFO L225 Difference]: With dead ends: 1075 [2018-11-07 01:04:32,110 INFO L226 Difference]: Without dead ends: 741 [2018-11-07 01:04:32,117 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 01:04:32,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2018-11-07 01:04:32,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 724. [2018-11-07 01:04:32,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2018-11-07 01:04:32,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1145 transitions. [2018-11-07 01:04:32,175 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1145 transitions. Word has length 133 [2018-11-07 01:04:32,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:04:32,176 INFO L480 AbstractCegarLoop]: Abstraction has 724 states and 1145 transitions. [2018-11-07 01:04:32,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 01:04:32,176 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1145 transitions. [2018-11-07 01:04:32,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-07 01:04:32,182 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:04:32,182 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 01:04:32,183 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:04:32,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:04:32,183 INFO L82 PathProgramCache]: Analyzing trace with hash -214566269, now seen corresponding path program 1 times [2018-11-07 01:04:32,183 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:04:32,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:04:32,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:04:32,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:04:32,185 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:04:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:04:32,615 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:04:32,616 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:04:32,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 01:04:32,616 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:04:32,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 01:04:32,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 01:04:32,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 01:04:32,619 INFO L87 Difference]: Start difference. First operand 724 states and 1145 transitions. Second operand 5 states. [2018-11-07 01:04:34,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:04:34,750 INFO L93 Difference]: Finished difference Result 1578 states and 2533 transitions. [2018-11-07 01:04:34,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 01:04:34,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2018-11-07 01:04:34,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:04:34,759 INFO L225 Difference]: With dead ends: 1578 [2018-11-07 01:04:34,760 INFO L226 Difference]: Without dead ends: 721 [2018-11-07 01:04:34,766 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 01:04:34,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2018-11-07 01:04:34,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2018-11-07 01:04:34,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2018-11-07 01:04:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1069 transitions. [2018-11-07 01:04:34,827 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1069 transitions. Word has length 134 [2018-11-07 01:04:34,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:04:34,828 INFO L480 AbstractCegarLoop]: Abstraction has 721 states and 1069 transitions. [2018-11-07 01:04:34,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 01:04:34,828 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1069 transitions. [2018-11-07 01:04:34,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-07 01:04:34,831 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:04:34,832 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 01:04:34,832 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:04:34,832 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:04:34,833 INFO L82 PathProgramCache]: Analyzing trace with hash -441297109, now seen corresponding path program 1 times [2018-11-07 01:04:34,833 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:04:34,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:04:34,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:04:34,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:04:34,834 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:04:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:04:35,814 WARN L179 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2018-11-07 01:04:36,066 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:04:36,067 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:04:36,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 01:04:36,067 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:04:36,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 01:04:36,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 01:04:36,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 01:04:36,069 INFO L87 Difference]: Start difference. First operand 721 states and 1069 transitions. Second operand 5 states. [2018-11-07 01:04:37,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:04:37,281 INFO L93 Difference]: Finished difference Result 1572 states and 2365 transitions. [2018-11-07 01:04:37,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 01:04:37,282 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2018-11-07 01:04:37,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:04:37,292 INFO L225 Difference]: With dead ends: 1572 [2018-11-07 01:04:37,292 INFO L226 Difference]: Without dead ends: 720 [2018-11-07 01:04:37,299 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 01:04:37,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2018-11-07 01:04:37,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 720. [2018-11-07 01:04:37,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2018-11-07 01:04:37,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1062 transitions. [2018-11-07 01:04:37,336 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1062 transitions. Word has length 135 [2018-11-07 01:04:37,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:04:37,337 INFO L480 AbstractCegarLoop]: Abstraction has 720 states and 1062 transitions. [2018-11-07 01:04:37,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 01:04:37,337 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1062 transitions. [2018-11-07 01:04:37,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-07 01:04:37,341 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:04:37,341 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:04:37,341 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:04:37,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:04:37,342 INFO L82 PathProgramCache]: Analyzing trace with hash -689394821, now seen corresponding path program 1 times [2018-11-07 01:04:37,342 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:04:37,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:04:37,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:04:37,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:04:37,344 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:04:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:04:37,500 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:04:37,501 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:04:37,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 01:04:37,501 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:04:37,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 01:04:37,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 01:04:37,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:04:37,503 INFO L87 Difference]: Start difference. First operand 720 states and 1062 transitions. Second operand 3 states. [2018-11-07 01:04:38,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:04:38,269 INFO L93 Difference]: Finished difference Result 1882 states and 2820 transitions. [2018-11-07 01:04:38,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 01:04:38,270 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2018-11-07 01:04:38,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:04:38,278 INFO L225 Difference]: With dead ends: 1882 [2018-11-07 01:04:38,278 INFO L226 Difference]: Without dead ends: 1168 [2018-11-07 01:04:38,283 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:04:38,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2018-11-07 01:04:38,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1164. [2018-11-07 01:04:38,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1164 states. [2018-11-07 01:04:38,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1592 transitions. [2018-11-07 01:04:38,318 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1592 transitions. Word has length 138 [2018-11-07 01:04:38,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:04:38,319 INFO L480 AbstractCegarLoop]: Abstraction has 1164 states and 1592 transitions. [2018-11-07 01:04:38,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 01:04:38,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1592 transitions. [2018-11-07 01:04:38,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-11-07 01:04:38,326 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:04:38,326 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:04:38,327 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:04:38,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:04:38,327 INFO L82 PathProgramCache]: Analyzing trace with hash -155247930, now seen corresponding path program 1 times [2018-11-07 01:04:38,327 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:04:38,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:04:38,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:04:38,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:04:38,329 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:04:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:04:38,817 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 01:04:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:04:38,991 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 01:04:38,992 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 01:04:38,993 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 171 with the following transitions: [2018-11-07 01:04:38,997 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [97], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [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], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [613], [615], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-11-07 01:04:39,119 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 01:04:39,120 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 01:04:49,730 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 01:04:49,733 INFO L272 AbstractInterpreter]: Visited 69 different actions 69 times. Never merged. Never widened. Never found a fixpoint. Largest state had 42 variables. [2018-11-07 01:04:49,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:04:49,744 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 01:04:53,983 INFO L227 lantSequenceWeakener]: Weakened 108 states. On average, predicates are now at 79.83% of their original sizes. [2018-11-07 01:04:53,983 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 01:04:55,391 INFO L415 sIntCurrentIteration]: We unified 169 AI predicates to 169 [2018-11-07 01:04:55,392 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 01:04:55,393 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 01:04:55,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2018-11-07 01:04:55,394 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:04:55,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 01:04:55,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 01:04:55,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-11-07 01:04:55,395 INFO L87 Difference]: Start difference. First operand 1164 states and 1592 transitions. Second operand 12 states. [2018-11-07 01:05:12,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:05:12,197 INFO L93 Difference]: Finished difference Result 2383 states and 3259 transitions. [2018-11-07 01:05:12,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 01:05:12,197 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 170 [2018-11-07 01:05:12,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:05:12,204 INFO L225 Difference]: With dead ends: 2383 [2018-11-07 01:05:12,205 INFO L226 Difference]: Without dead ends: 1225 [2018-11-07 01:05:12,210 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 175 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2018-11-07 01:05:12,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2018-11-07 01:05:12,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1225. [2018-11-07 01:05:12,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2018-11-07 01:05:12,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1658 transitions. [2018-11-07 01:05:12,251 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1658 transitions. Word has length 170 [2018-11-07 01:05:12,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:05:12,251 INFO L480 AbstractCegarLoop]: Abstraction has 1225 states and 1658 transitions. [2018-11-07 01:05:12,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-07 01:05:12,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1658 transitions. [2018-11-07 01:05:12,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-11-07 01:05:12,257 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:05:12,258 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:05:12,258 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:05:12,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:05:12,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1006399511, now seen corresponding path program 1 times [2018-11-07 01:05:12,259 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:05:12,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:05:12,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:05:12,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:05:12,260 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:05:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:05:12,452 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 60 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 01:05:12,453 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 01:05:12,453 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 01:05:12,453 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 180 with the following transitions: [2018-11-07 01:05:12,454 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [97], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [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], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [613], [615], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-11-07 01:05:12,462 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 01:05:12,463 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 01:05:35,909 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 01:05:35,909 INFO L272 AbstractInterpreter]: Visited 127 different actions 194 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-11-07 01:05:35,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:05:35,914 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 01:05:41,540 INFO L227 lantSequenceWeakener]: Weakened 165 states. On average, predicates are now at 80.55% of their original sizes. [2018-11-07 01:05:41,541 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 01:06:01,960 INFO L415 sIntCurrentIteration]: We unified 178 AI predicates to 178 [2018-11-07 01:06:01,961 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 01:06:01,961 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 01:06:01,961 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-07 01:06:01,961 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:06:01,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 01:06:01,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 01:06:01,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2018-11-07 01:06:01,963 INFO L87 Difference]: Start difference. First operand 1225 states and 1658 transitions. Second operand 18 states. [2018-11-07 01:06:45,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:06:45,022 INFO L93 Difference]: Finished difference Result 2528 states and 3449 transitions. [2018-11-07 01:06:45,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-07 01:06:45,022 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 179 [2018-11-07 01:06:45,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:06:45,029 INFO L225 Difference]: With dead ends: 2528 [2018-11-07 01:06:45,029 INFO L226 Difference]: Without dead ends: 1370 [2018-11-07 01:06:45,034 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 193 GetRequests, 70 SyntacticMatches, 92 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1111 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=223, Invalid=833, Unknown=0, NotChecked=0, Total=1056 [2018-11-07 01:06:45,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2018-11-07 01:06:45,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1363. [2018-11-07 01:06:45,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2018-11-07 01:06:45,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1806 transitions. [2018-11-07 01:06:45,075 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1806 transitions. Word has length 179 [2018-11-07 01:06:45,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:06:45,076 INFO L480 AbstractCegarLoop]: Abstraction has 1363 states and 1806 transitions. [2018-11-07 01:06:45,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 01:06:45,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1806 transitions. [2018-11-07 01:06:45,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-11-07 01:06:45,083 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:06:45,084 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 01:06:45,084 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:06:45,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:06:45,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1171173763, now seen corresponding path program 1 times [2018-11-07 01:06:45,085 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:06:45,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:06:45,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:06:45,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:06:45,086 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:06:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:06:45,268 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 100 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-11-07 01:06:45,269 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 01:06:45,269 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 01:06:45,269 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-11-07 01:06:45,270 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [97], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [137], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [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], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [613], [615], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-11-07 01:06:45,275 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 01:06:45,276 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 01:07:20,095 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 01:07:20,096 INFO L272 AbstractInterpreter]: Visited 127 different actions 194 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-11-07 01:07:20,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:07:20,100 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 01:07:31,215 INFO L227 lantSequenceWeakener]: Weakened 93 states. On average, predicates are now at 81.4% of their original sizes. [2018-11-07 01:07:31,215 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 01:08:26,454 INFO L415 sIntCurrentIteration]: We unified 211 AI predicates to 211 [2018-11-07 01:08:26,455 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 01:08:26,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 01:08:26,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [26] imperfect sequences [6] total 30 [2018-11-07 01:08:26,456 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:08:26,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-07 01:08:26,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-07 01:08:26,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2018-11-07 01:08:26,457 INFO L87 Difference]: Start difference. First operand 1363 states and 1806 transitions. Second operand 26 states. Received shutdown request... [2018-11-07 01:08:38,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 01:08:38,819 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 01:08:38,825 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 01:08:38,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:08:38 BoogieIcfgContainer [2018-11-07 01:08:38,826 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 01:08:38,827 INFO L168 Benchmark]: Toolchain (without parser) took 255802.77 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-07 01:08:38,828 INFO L168 Benchmark]: CDTParser took 0.20 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 01:08:38,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 766.12 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-11-07 01:08:38,829 INFO L168 Benchmark]: Boogie Procedure Inliner took 140.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -837.8 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-11-07 01:08:38,830 INFO L168 Benchmark]: Boogie Preprocessor took 128.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2018-11-07 01:08:38,831 INFO L168 Benchmark]: RCFGBuilder took 3214.27 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: 103.5 MB). Peak memory consumption was 103.5 MB. Max. memory is 7.1 GB. [2018-11-07 01:08:38,832 INFO L168 Benchmark]: TraceAbstraction took 251547.92 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -385.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 01:08:38,837 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 766.12 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 140.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -837.8 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3214.27 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: 103.5 MB). Peak memory consumption was 103.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 251547.92 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -385.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 521]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 521). Cancelled while BasicCegarLoop was constructing difference of abstraction (1363states) and FLOYD_HOARE automaton (currently 10 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (15 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 251.4s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 80.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 902 SDtfs, 2904 SDslu, 942 SDs, 0 SdLazy, 4300 SolverSat, 756 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.7s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 621 GetRequests, 422 SyntacticMatches, 107 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1470 ImplicationChecksByTransitivity, 84.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1363occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 69.0s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9948963237712265 AbsIntWeakeningRatio, 0.20967741935483872 AbsIntAvgWeakeningVarsNumRemoved, 1517.0663082437277 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 28 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1223 NumberOfCodeBlocks, 1223 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1215 ConstructedInterpolants, 0 QuantifiedInterpolants, 938972 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 293/325 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown