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/Problem14_label09_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:24:16,191 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:24:16,194 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:24:16,212 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:24:16,212 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:24:16,215 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:24:16,217 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:24:16,220 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:24:16,229 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:24:16,234 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:24:16,235 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:24:16,235 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:24:16,236 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:24:16,237 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:24:16,241 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:24:16,242 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:24:16,244 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:24:16,246 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:24:16,253 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:24:16,258 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:24:16,259 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:24:16,261 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:24:16,264 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 03:24:16,264 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 03:24:16,264 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 03:24:16,265 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 03:24:16,267 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 03:24:16,268 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 03:24:16,269 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 03:24:16,272 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 03:24:16,273 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 03:24:16,273 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 03:24:16,278 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 03:24:16,308 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:24:16,309 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:24:16,310 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:24:16,310 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:24:16,310 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:24:16,310 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:24:16,310 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:24:16,311 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:24:16,312 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:24:16,312 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:24:16,312 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:24:16,312 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:24:16,313 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:24:16,313 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:24:16,314 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:24:16,314 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:24:16,314 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:24:16,314 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:24:16,314 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:24:16,315 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:24:16,315 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:24:16,315 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:24:16,315 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:24:16,315 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:24:16,317 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:24:16,317 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:24:16,318 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:24:16,318 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:24:16,318 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:24:16,318 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:24:16,319 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:24:16,319 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:24:16,319 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:24:16,319 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:24:16,393 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:24:16,410 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:24:16,415 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:24:16,417 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:24:16,418 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:24:16,418 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label09_true-unreach-call_false-termination.c [2018-11-07 03:24:16,492 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a04963a27/6368bccc9f884cc897f332ff63ece375/FLAG9fc26d920 [2018-11-07 03:24:17,153 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:24:17,159 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label09_true-unreach-call_false-termination.c [2018-11-07 03:24:17,191 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a04963a27/6368bccc9f884cc897f332ff63ece375/FLAG9fc26d920 [2018-11-07 03:24:17,206 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a04963a27/6368bccc9f884cc897f332ff63ece375 [2018-11-07 03:24:17,219 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:24:17,221 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:24:17,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:24:17,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:24:17,226 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:24:17,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:24:17" (1/1) ... [2018-11-07 03:24:17,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ade47ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:17, skipping insertion in model container [2018-11-07 03:24:17,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:24:17" (1/1) ... [2018-11-07 03:24:17,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:24:17,306 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:24:17,911 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:24:17,920 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:24:18,060 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:24:18,078 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:24:18,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:18 WrapperNode [2018-11-07 03:24:18,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:24:18,080 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:24:18,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:24:18,080 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:24:18,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:18" (1/1) ... [2018-11-07 03:24:18,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:18" (1/1) ... [2018-11-07 03:24:18,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:24:18,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:24:18,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:24:18,221 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:24:18,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:18" (1/1) ... [2018-11-07 03:24:18,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:18" (1/1) ... [2018-11-07 03:24:18,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:18" (1/1) ... [2018-11-07 03:24:18,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:18" (1/1) ... [2018-11-07 03:24:18,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:18" (1/1) ... [2018-11-07 03:24:18,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:18" (1/1) ... [2018-11-07 03:24:18,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:18" (1/1) ... [2018-11-07 03:24:18,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:24:18,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:24:18,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:24:18,369 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:24:18,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:18" (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 03:24:18,448 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:24:18,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:24:18,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:24:18,450 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:24:18,450 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:24:18,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:24:18,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:24:18,451 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:24:18,451 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:24:22,260 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:24:22,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:24:22 BoogieIcfgContainer [2018-11-07 03:24:22,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:24:22,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:24:22,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:24:22,266 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:24:22,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:24:17" (1/3) ... [2018-11-07 03:24:22,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123e6042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:24:22, skipping insertion in model container [2018-11-07 03:24:22,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:24:18" (2/3) ... [2018-11-07 03:24:22,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123e6042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:24:22, skipping insertion in model container [2018-11-07 03:24:22,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:24:22" (3/3) ... [2018-11-07 03:24:22,271 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label09_true-unreach-call_false-termination.c [2018-11-07 03:24:22,284 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:24:22,299 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:24:22,321 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:24:22,378 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:24:22,379 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:24:22,379 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:24:22,379 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:24:22,379 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:24:22,379 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:24:22,380 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:24:22,380 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:24:22,413 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 03:24:22,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-07 03:24:22,423 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:24:22,425 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] [2018-11-07 03:24:22,427 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:24:22,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:24:22,434 INFO L82 PathProgramCache]: Analyzing trace with hash 968801788, now seen corresponding path program 1 times [2018-11-07 03:24:22,437 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:24:22,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:24:22,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:24:22,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:24:22,491 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:24:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:24:22,934 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 03:24:22,936 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:24:22,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:24:22,937 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:24:22,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:24:22,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:24:22,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:24:22,969 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-07 03:24:26,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:24:26,014 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-11-07 03:24:26,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:24:26,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-11-07 03:24:26,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:24:26,039 INFO L225 Difference]: With dead ends: 894 [2018-11-07 03:24:26,039 INFO L226 Difference]: Without dead ends: 633 [2018-11-07 03:24:26,048 INFO L604 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 [2018-11-07 03:24:26,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-07 03:24:26,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-11-07 03:24:26,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-11-07 03:24:26,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 962 transitions. [2018-11-07 03:24:26,149 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 962 transitions. Word has length 52 [2018-11-07 03:24:26,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:24:26,149 INFO L480 AbstractCegarLoop]: Abstraction has 633 states and 962 transitions. [2018-11-07 03:24:26,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:24:26,150 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 962 transitions. [2018-11-07 03:24:26,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-11-07 03:24:26,161 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:24:26,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:24:26,162 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:24:26,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:24:26,163 INFO L82 PathProgramCache]: Analyzing trace with hash -415473421, now seen corresponding path program 1 times [2018-11-07 03:24:26,163 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:24:26,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:24:26,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:24:26,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:24:26,165 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:24:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:24:26,504 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:24:26,504 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:24:26,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:24:26,505 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:24:26,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:24:26,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:24:26,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:24:26,508 INFO L87 Difference]: Start difference. First operand 633 states and 962 transitions. Second operand 4 states. [2018-11-07 03:24:29,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:24:29,798 INFO L93 Difference]: Finished difference Result 2358 states and 3740 transitions. [2018-11-07 03:24:29,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:24:29,799 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2018-11-07 03:24:29,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:24:29,814 INFO L225 Difference]: With dead ends: 2358 [2018-11-07 03:24:29,814 INFO L226 Difference]: Without dead ends: 1731 [2018-11-07 03:24:29,821 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:24:29,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-11-07 03:24:29,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-11-07 03:24:29,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-11-07 03:24:29,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2514 transitions. [2018-11-07 03:24:29,935 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2514 transitions. Word has length 165 [2018-11-07 03:24:29,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:24:29,936 INFO L480 AbstractCegarLoop]: Abstraction has 1731 states and 2514 transitions. [2018-11-07 03:24:29,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:24:29,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2514 transitions. [2018-11-07 03:24:29,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-11-07 03:24:29,954 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:24:29,955 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 03:24:29,955 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:24:29,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:24:29,956 INFO L82 PathProgramCache]: Analyzing trace with hash 603968484, now seen corresponding path program 1 times [2018-11-07 03:24:29,956 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:24:29,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:24:29,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:24:29,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:24:29,958 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:24:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:24:30,546 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:24:30,547 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:24:30,547 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:24:30,548 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 241 with the following transitions: [2018-11-07 03:24:30,550 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [317], [319], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [630], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 03:24:30,629 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:24:30,629 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:24:32,725 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:24:32,727 INFO L272 AbstractInterpreter]: Visited 109 different actions 109 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 03:24:32,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:24:32,735 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:24:35,000 INFO L227 lantSequenceWeakener]: Weakened 232 states. On average, predicates are now at 78.02% of their original sizes. [2018-11-07 03:24:35,001 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:24:35,447 INFO L415 sIntCurrentIteration]: We unified 239 AI predicates to 239 [2018-11-07 03:24:35,448 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:24:35,449 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:24:35,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 03:24:35,449 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:24:35,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 03:24:35,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 03:24:35,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 03:24:35,451 INFO L87 Difference]: Start difference. First operand 1731 states and 2514 transitions. Second operand 7 states. [2018-11-07 03:24:38,005 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:25:03,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:25:03,860 INFO L93 Difference]: Finished difference Result 3641 states and 5264 transitions. [2018-11-07 03:25:03,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:25:03,860 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2018-11-07 03:25:03,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:25:03,872 INFO L225 Difference]: With dead ends: 3641 [2018-11-07 03:25:03,873 INFO L226 Difference]: Without dead ends: 1916 [2018-11-07 03:25:03,881 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 240 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:25:03,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2018-11-07 03:25:03,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1914. [2018-11-07 03:25:03,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2018-11-07 03:25:03,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2705 transitions. [2018-11-07 03:25:03,936 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2705 transitions. Word has length 240 [2018-11-07 03:25:03,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:25:03,937 INFO L480 AbstractCegarLoop]: Abstraction has 1914 states and 2705 transitions. [2018-11-07 03:25:03,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 03:25:03,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2705 transitions. [2018-11-07 03:25:03,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-11-07 03:25:03,948 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:25:03,949 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, 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, 1, 1, 1, 1, 1, 1, 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 03:25:03,949 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:25:03,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:25:03,950 INFO L82 PathProgramCache]: Analyzing trace with hash -350582061, now seen corresponding path program 1 times [2018-11-07 03:25:03,950 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:25:03,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:25:03,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:25:03,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:25:03,952 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:25:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:25:04,419 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 03:25:05,297 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 222 proven. 161 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 03:25:05,298 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:25:05,298 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:25:05,298 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 326 with the following transitions: [2018-11-07 03:25:05,299 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [317], [319], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [630], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 03:25:05,305 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:25:05,305 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:25:08,339 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:25:08,340 INFO L272 AbstractInterpreter]: Visited 113 different actions 219 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 03:25:08,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:25:08,350 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:25:11,000 INFO L227 lantSequenceWeakener]: Weakened 68 states. On average, predicates are now at 77.94% of their original sizes. [2018-11-07 03:25:11,000 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:25:58,354 INFO L415 sIntCurrentIteration]: We unified 324 AI predicates to 324 [2018-11-07 03:25:58,354 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:25:58,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:25:58,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [12] total 27 [2018-11-07 03:25:58,355 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:25:58,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 03:25:58,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 03:25:58,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-11-07 03:25:58,356 INFO L87 Difference]: Start difference. First operand 1914 states and 2705 transitions. Second operand 17 states. [2018-11-07 03:26:56,538 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 03:28:24,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 03:28:24,384 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:28:24,390 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:28:24,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:28:24 BoogieIcfgContainer [2018-11-07 03:28:24,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:28:24,391 INFO L168 Benchmark]: Toolchain (without parser) took 247171.73 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 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 628.6 MB. Max. memory is 7.1 GB. [2018-11-07 03:28:24,392 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:28:24,393 INFO L168 Benchmark]: CACSL2BoogieTranslator took 857.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 03:28:24,394 INFO L168 Benchmark]: Boogie Procedure Inliner took 140.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -820.3 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2018-11-07 03:28:24,395 INFO L168 Benchmark]: Boogie Preprocessor took 146.83 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:28:24,395 INFO L168 Benchmark]: RCFGBuilder took 3893.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 132.5 MB). Peak memory consumption was 132.5 MB. Max. memory is 7.1 GB. [2018-11-07 03:28:24,396 INFO L168 Benchmark]: TraceAbstraction took 242128.27 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 542.8 MB. Max. memory is 7.1 GB. [2018-11-07 03:28:24,401 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 857.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 140.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -820.3 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 146.83 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3893.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 132.5 MB). Peak memory consumption was 132.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 242128.27 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 542.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 139]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 139). Cancelled while BasicCegarLoop was constructing difference of abstraction (1914states) and FLOYD_HOARE automaton (currently 18 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (3009 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 242.0s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 180.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 640 SDtfs, 3092 SDslu, 548 SDs, 0 SdLazy, 4783 SolverSat, 814 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 72.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 581 GetRequests, 490 SyntacticMatches, 60 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 48.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1914occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.2s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.995659252966767 AbsIntWeakeningRatio, 0.10301953818827708 AbsIntAvgWeakeningVarsNumRemoved, 587.8880994671404 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 782 NumberOfCodeBlocks, 782 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 778 ConstructedInterpolants, 0 QuantifiedInterpolants, 1444707 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 444/607 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown