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_label11_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:16:31,419 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:16:31,425 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:16:31,442 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:16:31,443 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:16:31,444 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:16:31,446 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:16:31,448 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:16:31,449 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:16:31,450 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:16:31,451 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:16:31,452 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:16:31,453 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:16:31,454 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:16:31,455 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:16:31,456 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:16:31,457 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:16:31,459 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:16:31,461 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:16:31,463 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:16:31,464 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:16:31,465 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:16:31,468 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 00:16:31,468 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 00:16:31,468 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 00:16:31,469 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 00:16:31,471 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 00:16:31,471 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 00:16:31,472 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 00:16:31,474 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 00:16:31,474 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 00:16:31,475 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 00:16:31,478 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 00:16:31,505 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:16:31,505 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:16:31,506 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:16:31,507 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:16:31,507 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:16:31,507 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:16:31,507 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:16:31,507 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:16:31,508 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:16:31,508 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:16:31,508 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:16:31,508 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:16:31,509 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:16:31,509 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:16:31,509 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:16:31,510 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:16:31,510 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:16:31,510 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:16:31,510 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:16:31,510 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:16:31,511 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:16:31,511 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:16:31,511 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:16:31,511 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:16:31,511 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:16:31,512 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:16:31,512 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:16:31,512 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:16:31,512 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:16:31,512 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:16:31,513 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:16:31,513 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:16:31,513 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:16:31,513 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:16:31,564 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:16:31,581 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:16:31,585 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:16:31,586 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:16:31,587 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:16:31,587 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label11_false-unreach-call_false-termination.c [2018-11-07 00:16:31,648 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db1bcf111/1d5429f47a734eb2b938fd6e917448bf/FLAG19e35f040 [2018-11-07 00:16:32,248 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:16:32,252 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label11_false-unreach-call_false-termination.c [2018-11-07 00:16:32,276 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db1bcf111/1d5429f47a734eb2b938fd6e917448bf/FLAG19e35f040 [2018-11-07 00:16:32,292 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db1bcf111/1d5429f47a734eb2b938fd6e917448bf [2018-11-07 00:16:32,301 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:16:32,303 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:16:32,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:16:32,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:16:32,309 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:16:32,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:16:32" (1/1) ... [2018-11-07 00:16:32,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58dd67db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:32, skipping insertion in model container [2018-11-07 00:16:32,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:16:32" (1/1) ... [2018-11-07 00:16:32,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:16:32,413 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:16:32,935 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:16:32,943 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:16:33,123 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:16:33,158 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:16:33,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:33 WrapperNode [2018-11-07 00:16:33,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:16:33,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:16:33,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:16:33,161 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:16:33,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:33" (1/1) ... [2018-11-07 00:16:33,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:33" (1/1) ... [2018-11-07 00:16:33,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:16:33,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:16:33,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:16:33,335 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:16:33,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:33" (1/1) ... [2018-11-07 00:16:33,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:33" (1/1) ... [2018-11-07 00:16:33,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:33" (1/1) ... [2018-11-07 00:16:33,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:33" (1/1) ... [2018-11-07 00:16:33,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:33" (1/1) ... [2018-11-07 00:16:33,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:33" (1/1) ... [2018-11-07 00:16:33,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:33" (1/1) ... [2018-11-07 00:16:33,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:16:33,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:16:33,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:16:33,431 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:16:33,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:33" (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 00:16:33,488 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:16:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:16:33,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:16:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:16:33,489 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:16:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:16:33,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:16:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:16:33,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:16:36,950 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:16:36,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:16:36 BoogieIcfgContainer [2018-11-07 00:16:36,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:16:36,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:16:36,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:16:36,957 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:16:36,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:16:32" (1/3) ... [2018-11-07 00:16:36,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56cf635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:16:36, skipping insertion in model container [2018-11-07 00:16:36,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:16:33" (2/3) ... [2018-11-07 00:16:36,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56cf635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:16:36, skipping insertion in model container [2018-11-07 00:16:36,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:16:36" (3/3) ... [2018-11-07 00:16:36,961 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label11_false-unreach-call_false-termination.c [2018-11-07 00:16:36,971 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:16:36,981 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:16:36,997 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:16:37,041 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:16:37,042 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:16:37,042 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:16:37,042 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:16:37,042 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:16:37,042 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:16:37,043 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:16:37,043 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:16:37,076 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 00:16:37,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-07 00:16:37,084 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:16:37,085 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] [2018-11-07 00:16:37,087 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:16:37,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:16:37,093 INFO L82 PathProgramCache]: Analyzing trace with hash 177535516, now seen corresponding path program 1 times [2018-11-07 00:16:37,095 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:16:37,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:16:37,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:16:37,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:16:37,145 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:16:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:16:37,502 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 00:16:37,510 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:16:37,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:16:37,510 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:16:37,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:16:37,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:16:37,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:16:37,542 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-07 00:16:40,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:16:40,347 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-11-07 00:16:40,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:16:40,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-11-07 00:16:40,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:16:40,372 INFO L225 Difference]: With dead ends: 894 [2018-11-07 00:16:40,372 INFO L226 Difference]: Without dead ends: 633 [2018-11-07 00:16:40,380 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 00:16:40,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-07 00:16:40,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-11-07 00:16:40,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-11-07 00:16:40,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 962 transitions. [2018-11-07 00:16:40,477 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 962 transitions. Word has length 28 [2018-11-07 00:16:40,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:16:40,478 INFO L480 AbstractCegarLoop]: Abstraction has 633 states and 962 transitions. [2018-11-07 00:16:40,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:16:40,478 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 962 transitions. [2018-11-07 00:16:40,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-11-07 00:16:40,487 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:16:40,487 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:16:40,488 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:16:40,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:16:40,488 INFO L82 PathProgramCache]: Analyzing trace with hash 578252947, now seen corresponding path program 1 times [2018-11-07 00:16:40,489 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:16:40,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:16:40,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:16:40,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:16:40,491 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:16:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:16:40,936 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:16:40,937 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:16:40,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:16:40,937 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:16:40,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:16:40,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:16:40,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:16:40,942 INFO L87 Difference]: Start difference. First operand 633 states and 962 transitions. Second operand 4 states. [2018-11-07 00:16:44,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:16:44,996 INFO L93 Difference]: Finished difference Result 2358 states and 3741 transitions. [2018-11-07 00:16:44,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:16:44,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2018-11-07 00:16:44,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:16:45,020 INFO L225 Difference]: With dead ends: 2358 [2018-11-07 00:16:45,021 INFO L226 Difference]: Without dead ends: 1731 [2018-11-07 00:16:45,027 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:16:45,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-11-07 00:16:45,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-11-07 00:16:45,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-11-07 00:16:45,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2519 transitions. [2018-11-07 00:16:45,130 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2519 transitions. Word has length 141 [2018-11-07 00:16:45,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:16:45,131 INFO L480 AbstractCegarLoop]: Abstraction has 1731 states and 2519 transitions. [2018-11-07 00:16:45,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:16:45,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2519 transitions. [2018-11-07 00:16:45,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-11-07 00:16:45,142 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:16:45,142 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 00:16:45,143 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:16:45,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:16:45,143 INFO L82 PathProgramCache]: Analyzing trace with hash -138677585, now seen corresponding path program 1 times [2018-11-07 00:16:45,143 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:16:45,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:16:45,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:16:45,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:16:45,145 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:16:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:16:45,489 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 00:16:45,489 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:16:45,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:16:45,489 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:16:45,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:16:45,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:16:45,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:16:45,491 INFO L87 Difference]: Start difference. First operand 1731 states and 2519 transitions. Second operand 4 states. [2018-11-07 00:16:48,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:16:48,381 INFO L93 Difference]: Finished difference Result 5832 states and 9044 transitions. [2018-11-07 00:16:48,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:16:48,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 215 [2018-11-07 00:16:48,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:16:48,421 INFO L225 Difference]: With dead ends: 5832 [2018-11-07 00:16:48,421 INFO L226 Difference]: Without dead ends: 4107 [2018-11-07 00:16:48,440 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:16:48,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2018-11-07 00:16:48,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 4107. [2018-11-07 00:16:48,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4107 states. [2018-11-07 00:16:48,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4107 states to 4107 states and 5921 transitions. [2018-11-07 00:16:48,591 INFO L78 Accepts]: Start accepts. Automaton has 4107 states and 5921 transitions. Word has length 215 [2018-11-07 00:16:48,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:16:48,592 INFO L480 AbstractCegarLoop]: Abstraction has 4107 states and 5921 transitions. [2018-11-07 00:16:48,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:16:48,592 INFO L276 IsEmpty]: Start isEmpty. Operand 4107 states and 5921 transitions. [2018-11-07 00:16:48,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-11-07 00:16:48,602 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:16:48,602 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 00:16:48,603 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:16:48,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:16:48,603 INFO L82 PathProgramCache]: Analyzing trace with hash 801110427, now seen corresponding path program 1 times [2018-11-07 00:16:48,603 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:16:48,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:16:48,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:16:48,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:16:48,605 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:16:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:16:49,220 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:16:49,221 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:16:49,221 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:16:49,222 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 242 with the following transitions: [2018-11-07 00:16:49,224 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [614], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:16:49,299 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:16:49,299 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:16:52,474 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:16:55,160 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:16:55,162 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 00:16:55,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:16:55,205 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:16:58,007 INFO L227 lantSequenceWeakener]: Weakened 233 states. On average, predicates are now at 77.55% of their original sizes. [2018-11-07 00:16:58,008 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:16:58,452 INFO L415 sIntCurrentIteration]: We unified 240 AI predicates to 240 [2018-11-07 00:16:58,452 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:16:58,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:16:58,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2018-11-07 00:16:58,454 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:16:58,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 00:16:58,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 00:16:58,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:16:58,455 INFO L87 Difference]: Start difference. First operand 4107 states and 5921 transitions. Second operand 7 states. [2018-11-07 00:17:13,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:17:13,245 INFO L93 Difference]: Finished difference Result 8393 states and 12078 transitions. [2018-11-07 00:17:13,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:17:13,245 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2018-11-07 00:17:13,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:17:13,281 INFO L225 Difference]: With dead ends: 8393 [2018-11-07 00:17:13,281 INFO L226 Difference]: Without dead ends: 4292 [2018-11-07 00:17:13,306 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 241 GetRequests, 235 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 00:17:13,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4292 states. [2018-11-07 00:17:13,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4292 to 4290. [2018-11-07 00:17:13,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4290 states. [2018-11-07 00:17:13,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 6112 transitions. [2018-11-07 00:17:13,475 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 6112 transitions. Word has length 241 [2018-11-07 00:17:13,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:17:13,475 INFO L480 AbstractCegarLoop]: Abstraction has 4290 states and 6112 transitions. [2018-11-07 00:17:13,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 00:17:13,476 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 6112 transitions. [2018-11-07 00:17:13,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-11-07 00:17:13,491 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:17:13,491 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, 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, 3, 3, 3, 3, 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] [2018-11-07 00:17:13,492 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:17:13,492 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:17:13,492 INFO L82 PathProgramCache]: Analyzing trace with hash 2059096588, now seen corresponding path program 1 times [2018-11-07 00:17:13,493 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:17:13,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:17:13,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:17:13,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:17:13,494 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:17:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:17:14,149 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 00:17:14,361 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 00:17:14,595 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 00:17:15,126 WARN L179 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-07 00:17:15,789 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 151 proven. 177 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:17:15,790 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:17:15,790 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:17:15,790 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 327 with the following transitions: [2018-11-07 00:17:15,791 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [614], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:17:15,798 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:17:15,798 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:17:18,291 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:17:23,137 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:17:23,137 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 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 00:17:23,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:17:23,154 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:17:26,226 INFO L227 lantSequenceWeakener]: Weakened 106 states. On average, predicates are now at 78.16% of their original sizes. [2018-11-07 00:17:26,226 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:18:14,372 INFO L415 sIntCurrentIteration]: We unified 325 AI predicates to 325 [2018-11-07 00:18:14,372 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:18:14,372 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:18:14,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [12] total 29 [2018-11-07 00:18:14,373 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:18:14,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 00:18:14,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 00:18:14,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2018-11-07 00:18:14,374 INFO L87 Difference]: Start difference. First operand 4290 states and 6112 transitions. Second operand 19 states. [2018-11-07 00:20:00,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:20:00,952 INFO L93 Difference]: Finished difference Result 9756 states and 13602 transitions. [2018-11-07 00:20:00,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-07 00:20:00,952 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 326 [2018-11-07 00:20:00,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:20:00,980 INFO L225 Difference]: With dead ends: 9756 [2018-11-07 00:20:00,981 INFO L226 Difference]: Without dead ends: 4295 [2018-11-07 00:20:01,006 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 332 GetRequests, 248 SyntacticMatches, 60 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 49.4s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2018-11-07 00:20:01,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4295 states. [2018-11-07 00:20:01,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4295 to 4290. [2018-11-07 00:20:01,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4290 states. [2018-11-07 00:20:01,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 6106 transitions. [2018-11-07 00:20:01,341 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 6106 transitions. Word has length 326 [2018-11-07 00:20:01,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:20:01,341 INFO L480 AbstractCegarLoop]: Abstraction has 4290 states and 6106 transitions. [2018-11-07 00:20:01,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 00:20:01,342 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 6106 transitions. [2018-11-07 00:20:01,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-11-07 00:20:01,354 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:20:01,355 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:20:01,355 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:20:01,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:20:01,357 INFO L82 PathProgramCache]: Analyzing trace with hash -774588128, now seen corresponding path program 1 times [2018-11-07 00:20:01,357 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:20:01,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:20:01,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:20:01,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:20:01,359 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:20:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:20:02,493 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 76 proven. 293 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:20:02,494 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:20:02,494 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:20:02,494 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 353 with the following transitions: [2018-11-07 00:20:02,495 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [614], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:20:02,500 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:20:02,501 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:20:04,079 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:20:10,275 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:20:10,275 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 00:20:10,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:20:10,281 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:20:13,346 INFO L227 lantSequenceWeakener]: Weakened 226 states. On average, predicates are now at 77.73% of their original sizes. [2018-11-07 00:20:13,346 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:20:22,373 INFO L415 sIntCurrentIteration]: We unified 351 AI predicates to 351 [2018-11-07 00:20:22,374 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:20:22,374 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:20:22,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [15] total 35 [2018-11-07 00:20:22,374 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:20:22,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 00:20:22,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 00:20:22,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2018-11-07 00:20:22,376 INFO L87 Difference]: Start difference. First operand 4290 states and 6106 transitions. Second operand 22 states. Received shutdown request... [2018-11-07 00:20:31,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 00:20:31,436 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:20:31,441 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:20:31,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:20:31 BoogieIcfgContainer [2018-11-07 00:20:31,442 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:20:31,443 INFO L168 Benchmark]: Toolchain (without parser) took 239140.89 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -445.3 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-07 00:20:31,444 INFO L168 Benchmark]: CDTParser took 0.17 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 00:20:31,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 855.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-11-07 00:20:31,445 INFO L168 Benchmark]: Boogie Procedure Inliner took 174.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 725.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -807.6 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2018-11-07 00:20:31,446 INFO L168 Benchmark]: Boogie Preprocessor took 95.36 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 00:20:31,447 INFO L168 Benchmark]: RCFGBuilder took 3522.19 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: 122.4 MB). Peak memory consumption was 122.4 MB. Max. memory is 7.1 GB. [2018-11-07 00:20:31,447 INFO L168 Benchmark]: TraceAbstraction took 234488.35 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 187.0 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 00:20:31,452 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 855.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 174.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 725.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -807.6 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.36 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 3522.19 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: 122.4 MB). Peak memory consumption was 122.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234488.35 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 187.0 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 67). Cancelled while BasicCegarLoop was constructing difference of abstraction (4290states) and FLOYD_HOARE automaton (currently 9 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (26 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 234.4s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 140.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 884 SDtfs, 4918 SDslu, 739 SDs, 0 SdLazy, 5602 SolverSat, 1154 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 59.2s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 945 GetRequests, 824 SyntacticMatches, 60 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 61.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4290occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 21.1s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9957656952091638 AbsIntWeakeningRatio, 0.0982532751091703 AbsIntAvgWeakeningVarsNumRemoved, 388.03275109170306 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 5 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 1303 NumberOfCodeBlocks, 1303 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1297 ConstructedInterpolants, 0 QuantifiedInterpolants, 4280149 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 514/986 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown