java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label54_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:56:29,071 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:56:29,073 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:56:29,091 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:56:29,091 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:56:29,093 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:56:29,094 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:56:29,097 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:56:29,099 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:56:29,100 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:56:29,101 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:56:29,109 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:56:29,110 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:56:29,113 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:56:29,115 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:56:29,116 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:56:29,118 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:56:29,119 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:56:29,124 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:56:29,127 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:56:29,128 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:56:29,129 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:56:29,133 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:56:29,135 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:56:29,135 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:56:29,136 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:56:29,137 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:56:29,138 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:56:29,138 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:56:29,141 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:56:29,143 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:56:29,144 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 23:56:29,146 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-26 23:56:29,161 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:56:29,162 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:56:29,163 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:56:29,163 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:56:29,163 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:56:29,163 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:56:29,163 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:56:29,164 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:56:29,164 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 23:56:29,164 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:56:29,164 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:56:29,164 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:56:29,165 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:56:29,165 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:56:29,166 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:56:29,166 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:56:29,166 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:56:29,166 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:56:29,166 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:56:29,167 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:56:29,167 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:56:29,167 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:56:29,167 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:56:29,168 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:56:29,168 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:56:29,168 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:56:29,168 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:56:29,168 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:56:29,169 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:56:29,169 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:56:29,169 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:56:29,169 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:56:29,169 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 23:56:29,170 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 23:56:29,217 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:56:29,231 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:56:29,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:56:29,240 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:56:29,240 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:56:29,241 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label54_false-unreach-call_false-termination.c [2018-10-26 23:56:29,323 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5b16e2a42/a6cb7870d92346d493f11ba28a56ea5c/FLAG0004b4bcc [2018-10-26 23:56:29,986 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:56:29,987 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label54_false-unreach-call_false-termination.c [2018-10-26 23:56:30,004 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5b16e2a42/a6cb7870d92346d493f11ba28a56ea5c/FLAG0004b4bcc [2018-10-26 23:56:30,022 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5b16e2a42/a6cb7870d92346d493f11ba28a56ea5c [2018-10-26 23:56:30,035 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:56:30,038 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:56:30,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:56:30,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:56:30,046 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:56:30,047 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:56:30" (1/1) ... [2018-10-26 23:56:30,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@309cd1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:30, skipping insertion in model container [2018-10-26 23:56:30,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:56:30" (1/1) ... [2018-10-26 23:56:30,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:56:30,151 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:56:30,696 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:56:30,701 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:56:30,853 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:56:30,873 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:56:30,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:30 WrapperNode [2018-10-26 23:56:30,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:56:30,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:56:30,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:56:30,875 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:56:30,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:30" (1/1) ... [2018-10-26 23:56:30,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:30" (1/1) ... [2018-10-26 23:56:31,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:56:31,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:56:31,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:56:31,163 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:56:31,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:30" (1/1) ... [2018-10-26 23:56:31,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:30" (1/1) ... [2018-10-26 23:56:31,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:30" (1/1) ... [2018-10-26 23:56:31,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:30" (1/1) ... [2018-10-26 23:56:31,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:30" (1/1) ... [2018-10-26 23:56:31,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:30" (1/1) ... [2018-10-26 23:56:31,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:30" (1/1) ... [2018-10-26 23:56:31,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:56:31,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:56:31,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:56:31,262 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:56:31,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:56:31,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:56:31,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:56:31,334 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 23:56:31,334 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 23:56:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:56:31,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:56:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:56:31,336 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:56:35,065 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:56:35,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:56:35 BoogieIcfgContainer [2018-10-26 23:56:35,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:56:35,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:56:35,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:56:35,075 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:56:35,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:56:30" (1/3) ... [2018-10-26 23:56:35,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d01777e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:56:35, skipping insertion in model container [2018-10-26 23:56:35,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:56:30" (2/3) ... [2018-10-26 23:56:35,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d01777e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:56:35, skipping insertion in model container [2018-10-26 23:56:35,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:56:35" (3/3) ... [2018-10-26 23:56:35,080 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label54_false-unreach-call_false-termination.c [2018-10-26 23:56:35,090 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:56:35,099 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:56:35,118 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:56:35,157 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:56:35,157 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:56:35,157 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:56:35,158 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:56:35,158 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:56:35,158 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:56:35,158 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:56:35,158 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:56:35,185 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-26 23:56:35,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-26 23:56:35,192 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:56:35,193 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:56:35,196 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:56:35,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:56:35,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1737204119, now seen corresponding path program 1 times [2018-10-26 23:56:35,204 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:56:35,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:35,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:56:35,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:35,257 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:56:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:56:35,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:56:35,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:56:35,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:56:35,433 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:56:35,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:56:35,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:56:35,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:56:35,461 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-26 23:56:37,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:56:37,765 INFO L93 Difference]: Finished difference Result 707 states and 1242 transitions. [2018-10-26 23:56:37,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:56:37,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-10-26 23:56:37,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:56:37,790 INFO L225 Difference]: With dead ends: 707 [2018-10-26 23:56:37,790 INFO L226 Difference]: Without dead ends: 450 [2018-10-26 23:56:37,799 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:56:37,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2018-10-26 23:56:37,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2018-10-26 23:56:37,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2018-10-26 23:56:37,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 678 transitions. [2018-10-26 23:56:37,893 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 678 transitions. Word has length 13 [2018-10-26 23:56:37,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:56:37,893 INFO L481 AbstractCegarLoop]: Abstraction has 450 states and 678 transitions. [2018-10-26 23:56:37,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:56:37,894 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 678 transitions. [2018-10-26 23:56:37,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-26 23:56:37,898 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:56:37,899 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:56:37,899 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:56:37,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:56:37,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1515047808, now seen corresponding path program 1 times [2018-10-26 23:56:37,900 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:56:37,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:37,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:56:37,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:37,902 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:56:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:56:38,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:56:38,214 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:56:38,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:56:38,214 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:56:38,217 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:56:38,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:56:38,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:56:38,218 INFO L87 Difference]: Start difference. First operand 450 states and 678 transitions. Second operand 3 states. [2018-10-26 23:56:39,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:56:39,731 INFO L93 Difference]: Finished difference Result 1260 states and 1959 transitions. [2018-10-26 23:56:39,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:56:39,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2018-10-26 23:56:39,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:56:39,739 INFO L225 Difference]: With dead ends: 1260 [2018-10-26 23:56:39,739 INFO L226 Difference]: Without dead ends: 816 [2018-10-26 23:56:39,747 INFO L605 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 [2018-10-26 23:56:39,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2018-10-26 23:56:39,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2018-10-26 23:56:39,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2018-10-26 23:56:39,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1139 transitions. [2018-10-26 23:56:39,791 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1139 transitions. Word has length 97 [2018-10-26 23:56:39,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:56:39,792 INFO L481 AbstractCegarLoop]: Abstraction has 816 states and 1139 transitions. [2018-10-26 23:56:39,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:56:39,793 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1139 transitions. [2018-10-26 23:56:39,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-26 23:56:39,797 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:56:39,797 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:56:39,797 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:56:39,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:56:39,798 INFO L82 PathProgramCache]: Analyzing trace with hash -966929960, now seen corresponding path program 1 times [2018-10-26 23:56:39,798 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:56:39,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:39,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:56:39,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:39,800 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:56:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:56:40,113 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:56:40,113 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:56:40,114 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:56:40,115 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 110 with the following transitions: [2018-10-26 23:56:40,117 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [7], [10], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-26 23:56:40,193 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:56:40,193 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:56:42,455 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:56:42,460 INFO L272 AbstractInterpreter]: Visited 100 different actions 100 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-26 23:56:42,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:56:42,477 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:56:43,654 INFO L227 lantSequenceWeakener]: Weakened 104 states. On average, predicates are now at 77.18% of their original sizes. [2018-10-26 23:56:43,654 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:56:43,864 INFO L415 sIntCurrentIteration]: We unified 108 AI predicates to 108 [2018-10-26 23:56:43,864 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:56:43,865 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:56:43,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-26 23:56:43,865 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:56:43,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 23:56:43,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 23:56:43,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-26 23:56:43,867 INFO L87 Difference]: Start difference. First operand 816 states and 1139 transitions. Second operand 7 states. [2018-10-26 23:56:45,870 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:56:59,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:56:59,222 INFO L93 Difference]: Finished difference Result 1811 states and 2515 transitions. [2018-10-26 23:56:59,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:56:59,222 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2018-10-26 23:56:59,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:56:59,228 INFO L225 Difference]: With dead ends: 1811 [2018-10-26 23:56:59,228 INFO L226 Difference]: Without dead ends: 1001 [2018-10-26 23:56:59,231 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 109 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:56:59,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2018-10-26 23:56:59,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 999. [2018-10-26 23:56:59,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2018-10-26 23:56:59,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1330 transitions. [2018-10-26 23:56:59,260 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1330 transitions. Word has length 109 [2018-10-26 23:56:59,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:56:59,261 INFO L481 AbstractCegarLoop]: Abstraction has 999 states and 1330 transitions. [2018-10-26 23:56:59,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 23:56:59,261 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1330 transitions. [2018-10-26 23:56:59,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-26 23:56:59,269 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:56:59,270 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:56:59,270 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:56:59,271 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:56:59,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1447044886, now seen corresponding path program 1 times [2018-10-26 23:56:59,271 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:56:59,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:59,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:56:59,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:56:59,274 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:56:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:57:00,087 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-10-26 23:57:00,264 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:57:00,265 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:57:00,265 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:57:00,265 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 195 with the following transitions: [2018-10-26 23:57:00,266 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [7], [10], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-26 23:57:00,271 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:57:00,271 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:57:04,091 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:57:04,091 INFO L272 AbstractInterpreter]: Visited 104 different actions 201 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-26 23:57:04,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:57:04,122 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:57:05,822 INFO L227 lantSequenceWeakener]: Weakened 37 states. On average, predicates are now at 77.98% of their original sizes. [2018-10-26 23:57:05,823 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:57:41,022 INFO L415 sIntCurrentIteration]: We unified 193 AI predicates to 193 [2018-10-26 23:57:41,022 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:57:41,023 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:57:41,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [12] total 29 [2018-10-26 23:57:41,023 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:57:41,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-26 23:57:41,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-26 23:57:41,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2018-10-26 23:57:41,025 INFO L87 Difference]: Start difference. First operand 999 states and 1330 transitions. Second operand 19 states. [2018-10-26 23:58:41,417 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:00:10,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:00:10,692 INFO L93 Difference]: Finished difference Result 2819 states and 3780 transitions. [2018-10-27 00:00:10,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-27 00:00:10,693 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 194 [2018-10-27 00:00:10,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:00:10,702 INFO L225 Difference]: With dead ends: 2819 [2018-10-27 00:00:10,703 INFO L226 Difference]: Without dead ends: 2009 [2018-10-27 00:00:10,707 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 200 GetRequests, 136 SyntacticMatches, 40 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 36.7s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2018-10-27 00:00:10,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2018-10-27 00:00:10,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 1760. [2018-10-27 00:00:10,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1760 states. [2018-10-27 00:00:10,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2138 transitions. [2018-10-27 00:00:10,864 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2138 transitions. Word has length 194 [2018-10-27 00:00:10,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:00:10,865 INFO L481 AbstractCegarLoop]: Abstraction has 1760 states and 2138 transitions. [2018-10-27 00:00:10,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-27 00:00:10,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2138 transitions. [2018-10-27 00:00:10,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-27 00:00:10,869 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:00:10,870 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:00:10,870 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:00:10,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:00:10,871 INFO L82 PathProgramCache]: Analyzing trace with hash -71904578, now seen corresponding path program 1 times [2018-10-27 00:00:10,871 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:00:10,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:00:10,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:00:10,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:00:10,872 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:00:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:00:11,334 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 00:00:11,539 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 00:00:11,766 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 00:00:12,060 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-27 00:00:12,479 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:00:12,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:00:12,480 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:00:12,480 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-10-27 00:00:12,481 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [7], [10], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 00:00:12,486 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:00:12,486 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:00:17,830 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:00:17,830 INFO L272 AbstractInterpreter]: Visited 119 different actions 232 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 00:00:17,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:00:17,838 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:00:19,918 INFO L227 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 79.46% of their original sizes. [2018-10-27 00:00:19,918 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:00:29,828 INFO L415 sIntCurrentIteration]: We unified 219 AI predicates to 219 [2018-10-27 00:00:29,829 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:00:29,829 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:00:29,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [15] total 31 [2018-10-27 00:00:29,830 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:00:29,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 00:00:29,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 00:00:29,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2018-10-27 00:00:29,832 INFO L87 Difference]: Start difference. First operand 1760 states and 2138 transitions. Second operand 18 states. Received shutdown request... [2018-10-27 00:00:31,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 00:00:31,476 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 00:00:31,481 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 00:00:31,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:00:31 BoogieIcfgContainer [2018-10-27 00:00:31,482 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:00:31,483 INFO L168 Benchmark]: Toolchain (without parser) took 241447.38 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 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 371.9 MB. Max. memory is 7.1 GB. [2018-10-27 00:00:31,484 INFO L168 Benchmark]: CDTParser took 0.33 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. [2018-10-27 00:00:31,485 INFO L168 Benchmark]: CACSL2BoogieTranslator took 835.87 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-27 00:00:31,486 INFO L168 Benchmark]: Boogie Procedure Inliner took 287.22 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.1 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -879.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-27 00:00:31,487 INFO L168 Benchmark]: Boogie Preprocessor took 98.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-10-27 00:00:31,488 INFO L168 Benchmark]: RCFGBuilder took 3805.14 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. [2018-10-27 00:00:31,489 INFO L168 Benchmark]: TraceAbstraction took 236411.82 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 3.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 287.1 MB. Max. memory is 7.1 GB. [2018-10-27 00:00:31,494 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 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 835.87 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 287.22 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.1 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -879.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3805.14 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 236411.82 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 3.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 287.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 22]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 22). Cancelled while BasicCegarLoop was constructing difference of abstraction (1760states) and FLOYD_HOARE automaton (currently 6 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 20 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 236.3s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 170.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1103 SDtfs, 3681 SDslu, 568 SDs, 0 SdLazy, 4372 SolverSat, 593 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 72.2s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 540 GetRequests, 441 SyntacticMatches, 48 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 46.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1760occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.5s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9938510312151614 AbsIntWeakeningRatio, 0.13846153846153847 AbsIntAvgWeakeningVarsNumRemoved, 343.75384615384615 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 251 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 633 NumberOfCodeBlocks, 633 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 628 ConstructedInterpolants, 0 QuantifiedInterpolants, 1620596 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 207/217 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown