java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 04:01:16,173 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 04:01:16,175 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 04:01:16,191 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 04:01:16,191 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 04:01:16,193 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 04:01:16,194 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 04:01:16,197 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 04:01:16,200 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 04:01:16,204 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 04:01:16,205 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 04:01:16,207 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 04:01:16,209 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 04:01:16,210 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 04:01:16,213 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 04:01:16,214 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 04:01:16,215 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 04:01:16,224 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 04:01:16,226 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 04:01:16,230 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 04:01:16,231 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 04:01:16,234 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 04:01:16,239 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 04:01:16,253 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 04:01:16,253 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 04:01:16,254 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 04:01:16,255 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 04:01:16,256 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 04:01:16,282 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 04:01:16,282 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 04:01:16,284 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 04:01:16,284 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 04:01:16,284 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 04:01:16,285 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 04:01:16,285 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 04:01:16,285 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 04:01:16,285 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 04:01:16,285 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 04:01:16,288 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 04:01:16,288 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 04:01:16,289 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 04:01:16,289 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 04:01:16,289 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 04:01:16,290 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 04:01:16,290 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 04:01:16,290 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 04:01:16,290 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 04:01:16,290 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 04:01:16,291 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 04:01:16,291 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 04:01:16,291 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 04:01:16,291 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 04:01:16,291 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 04:01:16,293 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 04:01:16,293 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 04:01:16,294 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 04:01:16,294 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 04:01:16,294 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 04:01:16,294 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 04:01:16,295 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 04:01:16,295 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 04:01:16,295 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 04:01:16,361 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 04:01:16,377 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 04:01:16,383 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 04:01:16,384 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 04:01:16,385 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 04:01:16,386 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label02_true-unreach-call.c [2018-11-07 04:01:16,464 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3673f11e/e0e0608a28a342ea9b2ecbd1ac03b71f/FLAG1062b0578 [2018-11-07 04:01:17,221 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 04:01:17,222 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label02_true-unreach-call.c [2018-11-07 04:01:17,252 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3673f11e/e0e0608a28a342ea9b2ecbd1ac03b71f/FLAG1062b0578 [2018-11-07 04:01:17,271 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3673f11e/e0e0608a28a342ea9b2ecbd1ac03b71f [2018-11-07 04:01:17,282 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 04:01:17,284 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 04:01:17,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 04:01:17,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 04:01:17,289 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 04:01:17,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:01:17" (1/1) ... [2018-11-07 04:01:17,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fb2d5a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:17, skipping insertion in model container [2018-11-07 04:01:17,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:01:17" (1/1) ... [2018-11-07 04:01:17,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 04:01:17,430 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 04:01:18,505 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 04:01:18,511 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 04:01:18,977 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 04:01:19,009 INFO L193 MainTranslator]: Completed translation [2018-11-07 04:01:19,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:19 WrapperNode [2018-11-07 04:01:19,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 04:01:19,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 04:01:19,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 04:01:19,011 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 04:01:19,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:19" (1/1) ... [2018-11-07 04:01:19,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:19" (1/1) ... [2018-11-07 04:01:19,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 04:01:19,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 04:01:19,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 04:01:19,305 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 04:01:19,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:19" (1/1) ... [2018-11-07 04:01:19,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:19" (1/1) ... [2018-11-07 04:01:19,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:19" (1/1) ... [2018-11-07 04:01:19,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:19" (1/1) ... [2018-11-07 04:01:19,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:19" (1/1) ... [2018-11-07 04:01:19,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:19" (1/1) ... [2018-11-07 04:01:19,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:19" (1/1) ... [2018-11-07 04:01:19,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 04:01:19,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 04:01:19,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 04:01:19,531 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 04:01:19,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 04:01:19,612 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 04:01:19,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 04:01:19,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 04:01:19,613 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 04:01:19,613 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 04:01:19,613 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 04:01:19,613 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 04:01:19,614 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 04:01:19,614 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 04:01:19,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 04:01:19,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 04:01:19,614 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 04:01:19,615 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 04:01:28,424 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 04:01:28,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:01:28 BoogieIcfgContainer [2018-11-07 04:01:28,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 04:01:28,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 04:01:28,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 04:01:28,430 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 04:01:28,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:01:17" (1/3) ... [2018-11-07 04:01:28,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d5dee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:01:28, skipping insertion in model container [2018-11-07 04:01:28,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:01:19" (2/3) ... [2018-11-07 04:01:28,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d5dee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:01:28, skipping insertion in model container [2018-11-07 04:01:28,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:01:28" (3/3) ... [2018-11-07 04:01:28,434 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label02_true-unreach-call.c [2018-11-07 04:01:28,444 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 04:01:28,455 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 04:01:28,472 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 04:01:28,522 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 04:01:28,523 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 04:01:28,523 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 04:01:28,523 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 04:01:28,523 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 04:01:28,523 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 04:01:28,524 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 04:01:28,524 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 04:01:28,585 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 04:01:28,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-07 04:01:28,598 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:01:28,599 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] [2018-11-07 04:01:28,602 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:01:28,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:01:28,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1847175428, now seen corresponding path program 1 times [2018-11-07 04:01:28,610 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:01:28,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:01:28,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:01:28,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:01:28,664 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:01:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:01:29,084 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 04:01:29,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:01:29,182 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:01:29,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 04:01:29,182 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:01:29,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 04:01:29,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 04:01:29,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 04:01:29,213 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 04:01:35,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:01:35,791 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 04:01:35,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 04:01:35,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2018-11-07 04:01:35,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:01:35,832 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 04:01:35,833 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 04:01:35,843 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 04:01:35,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 04:01:36,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 04:01:36,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 04:01:36,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-11-07 04:01:36,056 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 68 [2018-11-07 04:01:36,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:01:36,057 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-11-07 04:01:36,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 04:01:36,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-11-07 04:01:36,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-07 04:01:36,066 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:01:36,066 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:01:36,067 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:01:36,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:01:36,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1532118751, now seen corresponding path program 1 times [2018-11-07 04:01:36,068 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:01:36,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:01:36,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:01:36,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:01:36,070 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:01:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:01:36,448 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:01:36,448 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:01:36,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 04:01:36,449 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:01:36,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 04:01:36,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 04:01:36,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 04:01:36,452 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-11-07 04:01:46,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:01:46,473 INFO L93 Difference]: Finished difference Result 4422 states and 8490 transitions. [2018-11-07 04:01:46,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 04:01:46,474 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-11-07 04:01:46,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:01:46,498 INFO L225 Difference]: With dead ends: 4422 [2018-11-07 04:01:46,498 INFO L226 Difference]: Without dead ends: 2954 [2018-11-07 04:01:46,505 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 04:01:46,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-11-07 04:01:46,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2928. [2018-11-07 04:01:46,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-11-07 04:01:46,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5043 transitions. [2018-11-07 04:01:46,609 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5043 transitions. Word has length 143 [2018-11-07 04:01:46,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:01:46,613 INFO L480 AbstractCegarLoop]: Abstraction has 2928 states and 5043 transitions. [2018-11-07 04:01:46,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 04:01:46,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5043 transitions. [2018-11-07 04:01:46,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-11-07 04:01:46,625 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:01:46,626 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:01:46,626 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:01:46,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:01:46,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1969176313, now seen corresponding path program 1 times [2018-11-07 04:01:46,627 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:01:46,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:01:46,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:01:46,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:01:46,632 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:01:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:01:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:01:46,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:01:46,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 04:01:46,861 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:01:46,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 04:01:46,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 04:01:46,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 04:01:46,863 INFO L87 Difference]: Start difference. First operand 2928 states and 5043 transitions. Second operand 6 states. [2018-11-07 04:01:58,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:01:58,422 INFO L93 Difference]: Finished difference Result 11884 states and 21665 transitions. [2018-11-07 04:01:58,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 04:01:58,424 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2018-11-07 04:01:58,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:01:58,499 INFO L225 Difference]: With dead ends: 11884 [2018-11-07 04:01:58,500 INFO L226 Difference]: Without dead ends: 8962 [2018-11-07 04:01:58,534 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 04:01:58,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8962 states. [2018-11-07 04:01:58,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8962 to 8890. [2018-11-07 04:01:58,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8890 states. [2018-11-07 04:01:58,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8890 states to 8890 states and 13525 transitions. [2018-11-07 04:01:58,828 INFO L78 Accepts]: Start accepts. Automaton has 8890 states and 13525 transitions. Word has length 155 [2018-11-07 04:01:58,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:01:58,829 INFO L480 AbstractCegarLoop]: Abstraction has 8890 states and 13525 transitions. [2018-11-07 04:01:58,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 04:01:58,829 INFO L276 IsEmpty]: Start isEmpty. Operand 8890 states and 13525 transitions. [2018-11-07 04:01:58,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-11-07 04:01:58,840 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:01:58,841 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 04:01:58,841 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:01:58,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:01:58,842 INFO L82 PathProgramCache]: Analyzing trace with hash 642429817, now seen corresponding path program 1 times [2018-11-07 04:01:58,842 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:01:58,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:01:58,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:01:58,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:01:58,843 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:01:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:01:59,169 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 122 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 04:01:59,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:01:59,170 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:01:59,171 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 226 with the following transitions: [2018-11-07 04:01:59,173 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], [2063], [2067], [2069], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2184], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 04:01:59,247 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 04:01:59,247 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 04:02:00,573 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 04:02:01,257 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 04:02:01,259 INFO L272 AbstractInterpreter]: Visited 92 different actions 92 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 04:02:01,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:02:01,274 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 04:02:03,205 INFO L227 lantSequenceWeakener]: Weakened 217 states. On average, predicates are now at 78.41% of their original sizes. [2018-11-07 04:02:03,206 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 04:02:03,443 INFO L415 sIntCurrentIteration]: We unified 224 AI predicates to 224 [2018-11-07 04:02:03,443 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 04:02:03,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 04:02:03,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-07 04:02:03,445 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:02:03,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 04:02:03,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 04:02:03,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 04:02:03,446 INFO L87 Difference]: Start difference. First operand 8890 states and 13525 transitions. Second operand 7 states. [2018-11-07 04:03:31,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:03:31,049 INFO L93 Difference]: Finished difference Result 18479 states and 27889 transitions. [2018-11-07 04:03:31,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 04:03:31,049 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2018-11-07 04:03:31,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:03:31,097 INFO L225 Difference]: With dead ends: 18479 [2018-11-07 04:03:31,097 INFO L226 Difference]: Without dead ends: 9595 [2018-11-07 04:03:31,125 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 225 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 04:03:31,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9595 states. [2018-11-07 04:03:31,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9595 to 9593. [2018-11-07 04:03:31,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9593 states. [2018-11-07 04:03:31,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9593 states to 9593 states and 14240 transitions. [2018-11-07 04:03:31,358 INFO L78 Accepts]: Start accepts. Automaton has 9593 states and 14240 transitions. Word has length 225 [2018-11-07 04:03:31,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:03:31,359 INFO L480 AbstractCegarLoop]: Abstraction has 9593 states and 14240 transitions. [2018-11-07 04:03:31,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 04:03:31,359 INFO L276 IsEmpty]: Start isEmpty. Operand 9593 states and 14240 transitions. [2018-11-07 04:03:31,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-11-07 04:03:31,369 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:03:31,369 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:03:31,370 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:03:31,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:03:31,370 INFO L82 PathProgramCache]: Analyzing trace with hash 2045231702, now seen corresponding path program 1 times [2018-11-07 04:03:31,371 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:03:31,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:03:31,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:03:31,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:03:31,372 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:03:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:03:31,954 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 04:03:32,665 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 242 proven. 163 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 04:03:32,665 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:03:32,666 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:03:32,666 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 413 with the following transitions: [2018-11-07 04:03:32,667 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], [2063], [2067], [2069], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2184], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [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] [2018-11-07 04:03:32,677 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 04:03:32,677 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 04:03:33,993 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 04:03:48,421 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 04:03:48,422 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. [2018-11-07 04:03:48,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:03:48,430 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 04:03:52,443 INFO L227 lantSequenceWeakener]: Weakened 204 states. On average, predicates are now at 78.62% of their original sizes. [2018-11-07 04:03:52,444 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 04:03:58,009 INFO L415 sIntCurrentIteration]: We unified 411 AI predicates to 411 [2018-11-07 04:03:58,010 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 04:03:58,010 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 04:03:58,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [11] total 27 [2018-11-07 04:03:58,014 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:03:58,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 04:03:58,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 04:03:58,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2018-11-07 04:03:58,016 INFO L87 Difference]: Start difference. First operand 9593 states and 14240 transitions. Second operand 18 states. Received shutdown request... [2018-11-07 04:05:04,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 04:05:04,432 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 04:05:04,437 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 04:05:04,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:05:04 BoogieIcfgContainer [2018-11-07 04:05:04,438 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 04:05:04,439 INFO L168 Benchmark]: Toolchain (without parser) took 227155.90 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -860.2 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-07 04:05:04,440 INFO L168 Benchmark]: CDTParser took 0.28 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. [2018-11-07 04:05:04,441 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1725.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-07 04:05:04,441 INFO L168 Benchmark]: Boogie Procedure Inliner took 293.59 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -955.5 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 04:05:04,442 INFO L168 Benchmark]: Boogie Preprocessor took 225.75 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-11-07 04:05:04,443 INFO L168 Benchmark]: RCFGBuilder took 8894.16 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: 504.4 MB). Peak memory consumption was 504.4 MB. Max. memory is 7.1 GB. [2018-11-07 04:05:04,444 INFO L168 Benchmark]: TraceAbstraction took 216011.75 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 2.3 GB in the end (delta: -571.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 04:05:04,449 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 1725.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 293.59 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 762.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -955.5 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 225.75 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8894.16 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: 504.4 MB). Peak memory consumption was 504.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216011.75 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 2.3 GB in the end (delta: -571.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 192]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 192). Cancelled while BasicCegarLoop was constructing difference of abstraction (9593states) and FLOYD_HOARE automaton (currently 15 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (299 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 215.9s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 182.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1170 SDtfs, 8776 SDslu, 675 SDs, 0 SdLazy, 15626 SolverSat, 4192 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 108.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 666 GetRequests, 621 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9593occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 17.8s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9961514321579368 AbsIntWeakeningRatio, 0.09133858267716535 AbsIntAvgWeakeningVarsNumRemoved, 340.11811023622045 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 4 MinimizatonAttempts, 100 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 1003 NumberOfCodeBlocks, 1003 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 998 ConstructedInterpolants, 0 QuantifiedInterpolants, 1447713 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 496/724 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown