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/Problem02_label46_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:32:05,278 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:32:05,281 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:32:05,302 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:32:05,302 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:32:05,304 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:32:05,305 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:32:05,309 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:32:05,311 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:32:05,319 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:32:05,322 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:32:05,322 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:32:05,323 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:32:05,324 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:32:05,325 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:32:05,326 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:32:05,327 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:32:05,333 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:32:05,337 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:32:05,339 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:32:05,341 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:32:05,343 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:32:05,347 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:32:05,362 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 [2018-10-24 19:32:05,393 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:32:05,394 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:32:05,395 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:32:05,395 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:32:05,395 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:32:05,395 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:32:05,396 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:32:05,396 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:32:05,396 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:32:05,396 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:32:05,396 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:32:05,396 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:32:05,397 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:32:05,398 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:32:05,398 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:32:05,398 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:32:05,398 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:32:05,398 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:32:05,399 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:32:05,399 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:32:05,399 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:32:05,399 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:32:05,400 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:32:05,400 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:32:05,400 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:32:05,400 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:32:05,400 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:32:05,401 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:32:05,401 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:32:05,401 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:32:05,401 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:32:05,401 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:32:05,402 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:32:05,402 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:32:05,450 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:32:05,466 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:32:05,471 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:32:05,473 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:32:05,473 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:32:05,474 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label46_true-unreach-call_false-termination.c [2018-10-24 19:32:05,548 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8beda6c99/fcdbed6efd6f4d06a24673d696b429b7/FLAGfd4e7b45c [2018-10-24 19:32:06,189 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:32:06,194 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label46_true-unreach-call_false-termination.c [2018-10-24 19:32:06,228 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8beda6c99/fcdbed6efd6f4d06a24673d696b429b7/FLAGfd4e7b45c [2018-10-24 19:32:06,256 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8beda6c99/fcdbed6efd6f4d06a24673d696b429b7 [2018-10-24 19:32:06,270 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:32:06,272 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:32:06,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:32:06,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:32:06,279 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:32:06,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:32:06" (1/1) ... [2018-10-24 19:32:06,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78ddff4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:06, skipping insertion in model container [2018-10-24 19:32:06,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:32:06" (1/1) ... [2018-10-24 19:32:06,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:32:06,370 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:32:06,864 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:32:06,870 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:32:06,982 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:32:07,001 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:32:07,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:07 WrapperNode [2018-10-24 19:32:07,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:32:07,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:32:07,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:32:07,003 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:32:07,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:07" (1/1) ... [2018-10-24 19:32:07,034 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:07" (1/1) ... [2018-10-24 19:32:07,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:32:07,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:32:07,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:32:07,231 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:32:07,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:07" (1/1) ... [2018-10-24 19:32:07,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:07" (1/1) ... [2018-10-24 19:32:07,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:07" (1/1) ... [2018-10-24 19:32:07,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:07" (1/1) ... [2018-10-24 19:32:07,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:07" (1/1) ... [2018-10-24 19:32:07,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:07" (1/1) ... [2018-10-24 19:32:07,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:07" (1/1) ... [2018-10-24 19:32:07,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:32:07,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:32:07,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:32:07,331 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:32:07,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:07" (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 [2018-10-24 19:32:07,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:32:07,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:32:07,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:32:07,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:32:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:32:07,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:32:07,424 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:32:07,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:32:11,152 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:32:11,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:32:11 BoogieIcfgContainer [2018-10-24 19:32:11,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:32:11,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:32:11,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:32:11,158 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:32:11,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:32:06" (1/3) ... [2018-10-24 19:32:11,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d03476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:32:11, skipping insertion in model container [2018-10-24 19:32:11,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:32:07" (2/3) ... [2018-10-24 19:32:11,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d03476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:32:11, skipping insertion in model container [2018-10-24 19:32:11,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:32:11" (3/3) ... [2018-10-24 19:32:11,163 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label46_true-unreach-call_false-termination.c [2018-10-24 19:32:11,174 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:32:11,187 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:32:11,206 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:32:11,250 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:32:11,250 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:32:11,251 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:32:11,251 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:32:11,251 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:32:11,251 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:32:11,251 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:32:11,252 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:32:11,280 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-24 19:32:11,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-24 19:32:11,295 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:32:11,297 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] [2018-10-24 19:32:11,299 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:32:11,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:32:11,306 INFO L82 PathProgramCache]: Analyzing trace with hash -2115690369, now seen corresponding path program 1 times [2018-10-24 19:32:11,308 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:32:11,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:11,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:32:11,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:11,362 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:32:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:32:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:32:11,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:32:11,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:32:11,972 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:32:11,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:32:12,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:32:12,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:32:12,006 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-24 19:32:13,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:32:13,978 INFO L93 Difference]: Finished difference Result 623 states and 1063 transitions. [2018-10-24 19:32:13,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:32:13,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2018-10-24 19:32:13,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:32:14,005 INFO L225 Difference]: With dead ends: 623 [2018-10-24 19:32:14,005 INFO L226 Difference]: Without dead ends: 384 [2018-10-24 19:32:14,013 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:32:14,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-10-24 19:32:14,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 382. [2018-10-24 19:32:14,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-10-24 19:32:14,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 642 transitions. [2018-10-24 19:32:14,096 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 642 transitions. Word has length 119 [2018-10-24 19:32:14,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:32:14,098 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 642 transitions. [2018-10-24 19:32:14,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:32:14,098 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 642 transitions. [2018-10-24 19:32:14,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-24 19:32:14,105 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:32:14,105 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 19:32:14,106 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:32:14,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:32:14,107 INFO L82 PathProgramCache]: Analyzing trace with hash -108977794, now seen corresponding path program 1 times [2018-10-24 19:32:14,107 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:32:14,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:14,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:32:14,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:14,109 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:32:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:32:14,400 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:32:14,401 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:32:14,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:32:14,401 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:32:14,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:32:14,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:32:14,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:32:14,406 INFO L87 Difference]: Start difference. First operand 382 states and 642 transitions. Second operand 3 states. [2018-10-24 19:32:15,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:32:15,443 INFO L93 Difference]: Finished difference Result 1051 states and 1838 transitions. [2018-10-24 19:32:15,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:32:15,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2018-10-24 19:32:15,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:32:15,456 INFO L225 Difference]: With dead ends: 1051 [2018-10-24 19:32:15,457 INFO L226 Difference]: Without dead ends: 675 [2018-10-24 19:32:15,465 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 [2018-10-24 19:32:15,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2018-10-24 19:32:15,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 675. [2018-10-24 19:32:15,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2018-10-24 19:32:15,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1091 transitions. [2018-10-24 19:32:15,524 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1091 transitions. Word has length 129 [2018-10-24 19:32:15,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:32:15,528 INFO L481 AbstractCegarLoop]: Abstraction has 675 states and 1091 transitions. [2018-10-24 19:32:15,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:32:15,531 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1091 transitions. [2018-10-24 19:32:15,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-24 19:32:15,538 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:32:15,539 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:32:15,539 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:32:15,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:32:15,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1611295221, now seen corresponding path program 1 times [2018-10-24 19:32:15,540 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:32:15,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:15,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:32:15,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:15,542 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:32:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:32:15,859 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:32:16,091 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:32:16,091 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:32:16,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:32:16,092 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:32:16,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:32:16,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:32:16,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:32:16,094 INFO L87 Difference]: Start difference. First operand 675 states and 1091 transitions. Second operand 6 states. [2018-10-24 19:32:19,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:32:19,499 INFO L93 Difference]: Finished difference Result 2200 states and 3725 transitions. [2018-10-24 19:32:19,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:32:19,502 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2018-10-24 19:32:19,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:32:19,516 INFO L225 Difference]: With dead ends: 2200 [2018-10-24 19:32:19,516 INFO L226 Difference]: Without dead ends: 1531 [2018-10-24 19:32:19,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:32:19,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2018-10-24 19:32:19,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1501. [2018-10-24 19:32:19,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1501 states. [2018-10-24 19:32:19,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 2317 transitions. [2018-10-24 19:32:19,623 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 2317 transitions. Word has length 142 [2018-10-24 19:32:19,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:32:19,623 INFO L481 AbstractCegarLoop]: Abstraction has 1501 states and 2317 transitions. [2018-10-24 19:32:19,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:32:19,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 2317 transitions. [2018-10-24 19:32:19,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-24 19:32:19,631 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:32:19,631 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:32:19,632 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:32:19,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:32:19,632 INFO L82 PathProgramCache]: Analyzing trace with hash 2004636025, now seen corresponding path program 1 times [2018-10-24 19:32:19,632 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:32:19,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:19,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:32:19,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:19,634 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:32:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:32:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:32:19,967 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:32:19,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:32:19,967 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:32:19,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:32:19,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:32:19,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:32:19,969 INFO L87 Difference]: Start difference. First operand 1501 states and 2317 transitions. Second operand 5 states. [2018-10-24 19:32:22,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:32:22,490 INFO L93 Difference]: Finished difference Result 2935 states and 4510 transitions. [2018-10-24 19:32:22,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:32:22,500 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2018-10-24 19:32:22,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:32:22,511 INFO L225 Difference]: With dead ends: 2935 [2018-10-24 19:32:22,511 INFO L226 Difference]: Without dead ends: 1292 [2018-10-24 19:32:22,517 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:32:22,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2018-10-24 19:32:22,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1292. [2018-10-24 19:32:22,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1292 states. [2018-10-24 19:32:22,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1901 transitions. [2018-10-24 19:32:22,555 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1901 transitions. Word has length 144 [2018-10-24 19:32:22,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:32:22,555 INFO L481 AbstractCegarLoop]: Abstraction has 1292 states and 1901 transitions. [2018-10-24 19:32:22,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:32:22,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1901 transitions. [2018-10-24 19:32:22,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-24 19:32:22,561 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:32:22,562 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:32:22,562 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:32:22,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:32:22,563 INFO L82 PathProgramCache]: Analyzing trace with hash 475684418, now seen corresponding path program 1 times [2018-10-24 19:32:22,563 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:32:22,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:22,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:32:22,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:32:22,564 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:32:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:32:22,746 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:32:22,747 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:32:22,747 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:32:22,748 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 152 with the following transitions: [2018-10-24 19:32:22,750 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [623], [625], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:32:22,841 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:32:22,842 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:32:36,255 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:32:36,256 INFO L272 AbstractInterpreter]: Visited 120 different actions 120 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-10-24 19:32:36,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:32:36,269 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:32:40,854 INFO L232 lantSequenceWeakener]: Weakened 130 states. On average, predicates are now at 81.38% of their original sizes. [2018-10-24 19:32:40,854 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:32:44,445 INFO L413 sIntCurrentIteration]: We have 150 unified AI predicates [2018-10-24 19:32:44,445 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:32:44,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:32:44,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-10-24 19:32:44,447 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:32:44,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 19:32:44,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 19:32:44,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2018-10-24 19:32:44,448 INFO L87 Difference]: Start difference. First operand 1292 states and 1901 transitions. Second operand 14 states. [2018-10-24 19:34:27,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:34:27,735 INFO L93 Difference]: Finished difference Result 2878 states and 4216 transitions. [2018-10-24 19:34:27,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 19:34:27,735 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 151 [2018-10-24 19:34:27,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:34:27,743 INFO L225 Difference]: With dead ends: 2878 [2018-10-24 19:34:27,743 INFO L226 Difference]: Without dead ends: 1592 [2018-10-24 19:34:27,747 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 163 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2018-10-24 19:34:27,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2018-10-24 19:34:27,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1439. [2018-10-24 19:34:27,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1439 states. [2018-10-24 19:34:27,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 2058 transitions. [2018-10-24 19:34:27,860 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 2058 transitions. Word has length 151 [2018-10-24 19:34:27,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:34:27,860 INFO L481 AbstractCegarLoop]: Abstraction has 1439 states and 2058 transitions. [2018-10-24 19:34:27,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-24 19:34:27,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 2058 transitions. [2018-10-24 19:34:27,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-24 19:34:27,866 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:34:27,866 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:34:27,867 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:34:27,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:34:27,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1654186226, now seen corresponding path program 1 times [2018-10-24 19:34:27,868 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:34:27,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:34:27,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:34:27,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:34:27,869 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:34:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:34:28,550 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:34:28,550 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:34:28,551 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:34:28,551 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 157 with the following transitions: [2018-10-24 19:34:28,552 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [53], [64], [68], [72], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [623], [625], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:34:28,558 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:34:28,558 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:35:13,406 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:35:13,407 INFO L272 AbstractInterpreter]: Visited 123 different actions 365 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 38 variables. [2018-10-24 19:35:13,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:35:13,415 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:35:17,362 INFO L232 lantSequenceWeakener]: Weakened 8 states. On average, predicates are now at 85.42% of their original sizes. [2018-10-24 19:35:17,362 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 19:36:21,270 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:36:21,275 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:36:21,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:36:21 BoogieIcfgContainer [2018-10-24 19:36:21,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:36:21,277 INFO L168 Benchmark]: Toolchain (without parser) took 255005.99 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 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 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 19:36:21,278 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:36:21,279 INFO L168 Benchmark]: CACSL2BoogieTranslator took 728.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:36:21,280 INFO L168 Benchmark]: Boogie Procedure Inliner took 227.39 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 697.3 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -781.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2018-10-24 19:36:21,280 INFO L168 Benchmark]: Boogie Preprocessor took 99.43 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:36:21,281 INFO L168 Benchmark]: RCFGBuilder took 3822.89 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 108.3 MB). Peak memory consumption was 108.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:36:21,282 INFO L168 Benchmark]: TraceAbstraction took 250121.41 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 3.7 GB in the end (delta: -1.7 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-24 19:36:21,287 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 728.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 227.39 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 697.3 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -781.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.43 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3822.89 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 108.3 MB). Peak memory consumption was 108.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 250121.41 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 3.7 GB in the end (delta: -1.7 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 508]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 508). Cancelled while BasicCegarLoop was analyzing trace of length 157 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 250.0s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 112.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 770 SDtfs, 2581 SDslu, 729 SDs, 0 SdLazy, 3416 SolverSat, 728 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 61.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 190 GetRequests, 150 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1501occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 58.3s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9942774526035955 AbsIntWeakeningRatio, 0.21639344262295082 AbsIntAvgWeakeningVarsNumRemoved, 1175.055737704918 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 185 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 685 NumberOfCodeBlocks, 685 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 680 ConstructedInterpolants, 0 QuantifiedInterpolants, 427628 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 82/84 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown