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/Problem18_label51_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:23:07,221 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:23:07,223 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:23:07,238 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:23:07,238 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:23:07,240 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:23:07,243 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:23:07,245 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:23:07,248 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:23:07,248 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:23:07,250 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:23:07,251 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:23:07,252 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:23:07,253 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:23:07,262 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:23:07,263 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:23:07,264 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:23:07,267 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:23:07,271 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:23:07,275 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:23:07,276 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:23:07,278 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:23:07,280 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:23:07,291 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 22:23:07,310 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:23:07,310 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:23:07,311 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:23:07,311 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:23:07,312 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:23:07,312 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:23:07,312 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:23:07,312 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:23:07,312 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:23:07,312 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:23:07,313 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:23:07,313 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:23:07,314 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:23:07,314 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:23:07,314 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:23:07,314 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:23:07,314 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:23:07,315 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:23:07,315 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:23:07,315 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:23:07,315 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:23:07,315 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:23:07,315 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:23:07,316 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:23:07,316 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:23:07,316 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:23:07,316 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:23:07,316 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:23:07,317 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:23:07,317 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:23:07,317 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:23:07,317 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:23:07,317 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:23:07,318 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:23:07,372 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:23:07,384 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:23:07,389 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:23:07,391 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:23:07,392 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:23:07,393 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label51_true-unreach-call.c [2018-10-24 22:23:07,471 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d287ac809/513e354245f746bba0534b08f75c903d/FLAG722298c8c [2018-10-24 22:23:08,146 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:23:08,147 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label51_true-unreach-call.c [2018-10-24 22:23:08,171 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d287ac809/513e354245f746bba0534b08f75c903d/FLAG722298c8c [2018-10-24 22:23:08,189 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d287ac809/513e354245f746bba0534b08f75c903d [2018-10-24 22:23:08,202 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:23:08,205 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:23:08,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:23:08,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:23:08,213 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:23:08,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:23:08" (1/1) ... [2018-10-24 22:23:08,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@379aca2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:08, skipping insertion in model container [2018-10-24 22:23:08,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:23:08" (1/1) ... [2018-10-24 22:23:08,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:23:08,386 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:23:09,534 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:23:09,538 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:23:09,999 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:23:10,029 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:23:10,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:10 WrapperNode [2018-10-24 22:23:10,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:23:10,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:23:10,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:23:10,031 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:23:10,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:10" (1/1) ... [2018-10-24 22:23:10,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:10" (1/1) ... [2018-10-24 22:23:10,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:23:10,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:23:10,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:23:10,383 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:23:10,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:10" (1/1) ... [2018-10-24 22:23:10,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:10" (1/1) ... [2018-10-24 22:23:10,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:10" (1/1) ... [2018-10-24 22:23:10,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:10" (1/1) ... [2018-10-24 22:23:10,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:10" (1/1) ... [2018-10-24 22:23:10,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:10" (1/1) ... [2018-10-24 22:23:10,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:10" (1/1) ... [2018-10-24 22:23:10,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:23:10,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:23:10,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:23:10,561 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:23:10,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:10" (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 22:23:10,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:23:10,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:23:10,632 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 22:23:10,633 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 22:23:10,633 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:23:10,633 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:23:10,633 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:23:10,634 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:23:10,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:23:10,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:23:10,634 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:23:10,634 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:23:20,011 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:23:20,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:23:20 BoogieIcfgContainer [2018-10-24 22:23:20,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:23:20,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:23:20,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:23:20,021 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:23:20,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:23:08" (1/3) ... [2018-10-24 22:23:20,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761af8eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:23:20, skipping insertion in model container [2018-10-24 22:23:20,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:23:10" (2/3) ... [2018-10-24 22:23:20,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761af8eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:23:20, skipping insertion in model container [2018-10-24 22:23:20,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:23:20" (3/3) ... [2018-10-24 22:23:20,026 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label51_true-unreach-call.c [2018-10-24 22:23:20,037 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:23:20,052 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:23:20,072 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:23:20,141 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:23:20,141 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:23:20,142 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:23:20,142 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:23:20,142 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:23:20,142 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:23:20,142 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:23:20,143 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:23:20,201 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 22:23:20,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-24 22:23:20,213 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:23:20,214 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] [2018-10-24 22:23:20,219 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:23:20,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:23:20,227 INFO L82 PathProgramCache]: Analyzing trace with hash -198133833, now seen corresponding path program 1 times [2018-10-24 22:23:20,230 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:23:20,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:23:20,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:23:20,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:23:20,293 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:23:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:23:20,862 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 22:23:20,865 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:23:20,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:23:20,866 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:23:20,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:23:20,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:23:20,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:23:20,897 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-10-24 22:23:31,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:23:31,857 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-10-24 22:23:31,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:23:31,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2018-10-24 22:23:31,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:23:31,896 INFO L225 Difference]: With dead ends: 2974 [2018-10-24 22:23:31,897 INFO L226 Difference]: Without dead ends: 2193 [2018-10-24 22:23:31,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:23:31,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-10-24 22:23:32,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2018-10-24 22:23:32,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-10-24 22:23:32,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3506 transitions. [2018-10-24 22:23:32,093 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3506 transitions. Word has length 67 [2018-10-24 22:23:32,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:23:32,094 INFO L481 AbstractCegarLoop]: Abstraction has 2193 states and 3506 transitions. [2018-10-24 22:23:32,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:23:32,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3506 transitions. [2018-10-24 22:23:32,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-24 22:23:32,116 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:23:32,116 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:23:32,116 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:23:32,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:23:32,117 INFO L82 PathProgramCache]: Analyzing trace with hash 228041992, now seen corresponding path program 1 times [2018-10-24 22:23:32,117 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:23:32,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:23:32,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:23:32,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:23:32,123 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:23:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:23:32,413 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:23:32,444 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:23:32,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:23:32,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:23:32,445 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:23:32,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:23:32,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:23:32,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:23:32,448 INFO L87 Difference]: Start difference. First operand 2193 states and 3506 transitions. Second operand 5 states. [2018-10-24 22:23:41,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:23:41,764 INFO L93 Difference]: Finished difference Result 6600 states and 10738 transitions. [2018-10-24 22:23:41,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:23:41,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2018-10-24 22:23:41,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:23:41,805 INFO L225 Difference]: With dead ends: 6600 [2018-10-24 22:23:41,806 INFO L226 Difference]: Without dead ends: 4413 [2018-10-24 22:23:41,815 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:23:41,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-10-24 22:23:41,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4378. [2018-10-24 22:23:41,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2018-10-24 22:23:41,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6712 transitions. [2018-10-24 22:23:41,977 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6712 transitions. Word has length 137 [2018-10-24 22:23:41,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:23:41,978 INFO L481 AbstractCegarLoop]: Abstraction has 4378 states and 6712 transitions. [2018-10-24 22:23:41,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:23:41,978 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6712 transitions. [2018-10-24 22:23:41,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-24 22:23:41,990 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:23:41,990 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:23:41,990 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:23:41,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:23:41,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1314809025, now seen corresponding path program 1 times [2018-10-24 22:23:41,995 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:23:41,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:23:41,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:23:41,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:23:41,997 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:23:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:23:42,302 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:23:42,303 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:23:42,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:23:42,303 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:23:42,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:23:42,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:23:42,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:23:42,305 INFO L87 Difference]: Start difference. First operand 4378 states and 6712 transitions. Second operand 6 states. [2018-10-24 22:23:50,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:23:50,384 INFO L93 Difference]: Finished difference Result 15364 states and 24184 transitions. [2018-10-24 22:23:50,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:23:50,385 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2018-10-24 22:23:50,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:23:50,466 INFO L225 Difference]: With dead ends: 15364 [2018-10-24 22:23:50,467 INFO L226 Difference]: Without dead ends: 10992 [2018-10-24 22:23:50,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:23:50,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10992 states. [2018-10-24 22:23:50,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10992 to 10926. [2018-10-24 22:23:50,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10926 states. [2018-10-24 22:23:50,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10926 states to 10926 states and 15805 transitions. [2018-10-24 22:23:50,795 INFO L78 Accepts]: Start accepts. Automaton has 10926 states and 15805 transitions. Word has length 164 [2018-10-24 22:23:50,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:23:50,795 INFO L481 AbstractCegarLoop]: Abstraction has 10926 states and 15805 transitions. [2018-10-24 22:23:50,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:23:50,796 INFO L276 IsEmpty]: Start isEmpty. Operand 10926 states and 15805 transitions. [2018-10-24 22:23:50,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-24 22:23:50,801 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:23:50,801 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:23:50,801 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:23:50,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:23:50,805 INFO L82 PathProgramCache]: Analyzing trace with hash -446989259, now seen corresponding path program 1 times [2018-10-24 22:23:50,805 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:23:50,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:23:50,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:23:50,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:23:50,807 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:23:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:23:51,039 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:23:51,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:23:51,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:23:51,040 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:23:51,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:23:51,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:23:51,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:23:51,041 INFO L87 Difference]: Start difference. First operand 10926 states and 15805 transitions. Second operand 4 states. [2018-10-24 22:23:57,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:23:57,845 INFO L93 Difference]: Finished difference Result 26109 states and 38076 transitions. [2018-10-24 22:23:57,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:23:57,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2018-10-24 22:23:57,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:23:57,922 INFO L225 Difference]: With dead ends: 26109 [2018-10-24 22:23:57,923 INFO L226 Difference]: Without dead ends: 15189 [2018-10-24 22:23:57,958 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:23:57,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15189 states. [2018-10-24 22:23:58,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15189 to 15183. [2018-10-24 22:23:58,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15183 states. [2018-10-24 22:23:58,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15183 states to 15183 states and 19641 transitions. [2018-10-24 22:23:58,258 INFO L78 Accepts]: Start accepts. Automaton has 15183 states and 19641 transitions. Word has length 174 [2018-10-24 22:23:58,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:23:58,259 INFO L481 AbstractCegarLoop]: Abstraction has 15183 states and 19641 transitions. [2018-10-24 22:23:58,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:23:58,259 INFO L276 IsEmpty]: Start isEmpty. Operand 15183 states and 19641 transitions. [2018-10-24 22:23:58,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-10-24 22:23:58,265 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:23:58,265 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 22:23:58,265 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:23:58,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:23:58,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1032798605, now seen corresponding path program 1 times [2018-10-24 22:23:58,266 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:23:58,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:23:58,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:23:58,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:23:58,267 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:23:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:23:58,520 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:23:58,966 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 120 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:23:58,966 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:23:58,966 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:23:58,967 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 240 with the following transitions: [2018-10-24 22:23:58,972 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2059], [2061], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2216], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 22:23:59,058 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:23:59,058 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:24:01,094 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:24:01,095 INFO L272 AbstractInterpreter]: Visited 100 different actions 100 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 22:24:01,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:24:01,116 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:24:02,936 INFO L232 lantSequenceWeakener]: Weakened 231 states. On average, predicates are now at 78.32% of their original sizes. [2018-10-24 22:24:02,936 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:24:03,386 INFO L413 sIntCurrentIteration]: We have 238 unified AI predicates [2018-10-24 22:24:03,386 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:24:03,387 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:24:03,388 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 22:24:03,388 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:24:03,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 22:24:03,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 22:24:03,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:24:03,389 INFO L87 Difference]: Start difference. First operand 15183 states and 19641 transitions. Second operand 7 states. [2018-10-24 22:24:06,356 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:25:44,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:25:44,282 INFO L93 Difference]: Finished difference Result 31065 states and 40142 transitions. [2018-10-24 22:25:44,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:25:44,282 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 239 [2018-10-24 22:25:44,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:25:44,324 INFO L225 Difference]: With dead ends: 31065 [2018-10-24 22:25:44,324 INFO L226 Difference]: Without dead ends: 15888 [2018-10-24 22:25:44,349 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 239 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:25:44,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15888 states. [2018-10-24 22:25:44,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15888 to 15886. [2018-10-24 22:25:44,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15886 states. [2018-10-24 22:25:44,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15886 states to 15886 states and 20353 transitions. [2018-10-24 22:25:44,633 INFO L78 Accepts]: Start accepts. Automaton has 15886 states and 20353 transitions. Word has length 239 [2018-10-24 22:25:44,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:25:44,634 INFO L481 AbstractCegarLoop]: Abstraction has 15886 states and 20353 transitions. [2018-10-24 22:25:44,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 22:25:44,634 INFO L276 IsEmpty]: Start isEmpty. Operand 15886 states and 20353 transitions. [2018-10-24 22:25:44,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-10-24 22:25:44,646 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:25:44,646 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:25:44,647 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:25:44,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:25:44,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1020425839, now seen corresponding path program 1 times [2018-10-24 22:25:44,647 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:25:44,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:25:44,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:25:44,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:25:44,649 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:25:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:25:45,215 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:25:45,628 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:25:46,272 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 239 proven. 185 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:25:46,272 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:25:46,272 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:25:46,272 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 427 with the following transitions: [2018-10-24 22:25:46,273 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2059], [2061], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 22:25:46,282 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:25:46,282 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:25:56,308 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:25:56,308 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 22:25:56,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:25:56,316 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:26:00,662 INFO L232 lantSequenceWeakener]: Weakened 134 states. On average, predicates are now at 78.83% of their original sizes. [2018-10-24 22:26:00,662 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:26:47,012 INFO L413 sIntCurrentIteration]: We have 425 unified AI predicates [2018-10-24 22:26:47,013 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:26:47,013 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:26:47,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-10-24 22:26:47,014 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:26:47,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 22:26:47,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 22:26:47,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-10-24 22:26:47,015 INFO L87 Difference]: Start difference. First operand 15886 states and 20353 transitions. Second operand 16 states. Received shutdown request... [2018-10-24 22:26:54,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 22:26:54,710 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:26:54,716 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:26:54,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:26:54 BoogieIcfgContainer [2018-10-24 22:26:54,716 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:26:54,717 INFO L168 Benchmark]: Toolchain (without parser) took 226513.68 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 556.3 MB. Max. memory is 7.1 GB. [2018-10-24 22:26:54,718 INFO L168 Benchmark]: CDTParser took 0.90 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 22:26:54,719 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1823.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:26:54,720 INFO L168 Benchmark]: Boogie Procedure Inliner took 351.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -948.1 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:26:54,720 INFO L168 Benchmark]: Boogie Preprocessor took 177.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-10-24 22:26:54,721 INFO L168 Benchmark]: RCFGBuilder took 9452.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 524.2 MB). Peak memory consumption was 524.2 MB. Max. memory is 7.1 GB. [2018-10-24 22:26:54,722 INFO L168 Benchmark]: TraceAbstraction took 214698.80 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.5 GB in the end (delta: -1.8 GB). Peak memory consumption was 64.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:26:54,727 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.90 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 1823.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 351.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -948.1 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 177.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9452.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 524.2 MB). Peak memory consumption was 524.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214698.80 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.5 GB in the end (delta: -1.8 GB). Peak memory consumption was 64.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 189]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 189). Cancelled while BasicCegarLoop was constructing difference of abstraction (15886states) and FLOYD_HOARE automaton (currently 9 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (30 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 214.5s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 144.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2849 SDtfs, 9842 SDslu, 955 SDs, 0 SdLazy, 21571 SolverSat, 4948 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 96.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 698 GetRequests, 585 SyntacticMatches, 72 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 47.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15886occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9963139659431219 AbsIntWeakeningRatio, 0.08748114630467571 AbsIntAvgWeakeningVarsNumRemoved, 337.209653092006 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 109 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1207 NumberOfCodeBlocks, 1207 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1201 ConstructedInterpolants, 0 QuantifiedInterpolants, 1855542 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 549/806 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown