java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label53_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:02:49,369 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:02:49,371 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:02:49,384 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:02:49,384 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:02:49,385 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:02:49,387 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:02:49,388 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:02:49,390 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:02:49,391 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:02:49,392 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:02:49,392 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:02:49,393 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:02:49,394 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:02:49,395 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:02:49,396 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:02:49,397 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:02:49,399 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:02:49,401 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:02:49,402 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:02:49,403 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:02:49,405 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:02:49,407 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:02:49,413 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 22:02:49,414 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 22:02:49,415 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 22:02:49,415 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 22:02:49,416 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 22:02:49,440 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:02:49,440 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:02:49,441 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:02:49,442 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:02:49,443 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:02:49,443 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:02:49,443 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:02:49,443 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:02:49,444 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:02:49,444 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:02:49,444 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:02:49,444 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:02:49,445 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:02:49,446 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:02:49,446 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:02:49,446 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:02:49,446 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:02:49,447 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:02:49,447 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:02:49,447 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:02:49,447 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:02:49,447 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:02:49,448 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:02:49,449 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:02:49,449 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:02:49,449 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:02:49,450 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:02:49,450 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:02:49,450 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:02:49,450 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:02:49,450 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:02:49,451 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:02:49,451 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:02:49,451 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:02:49,525 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:02:49,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:02:49,545 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:02:49,546 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:02:49,547 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:02:49,548 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label53_true-unreach-call.c [2018-10-24 22:02:49,620 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dc45d89d0/7f01b3b466de4dab833ced06ebef6f78/FLAG9563fb57a [2018-10-24 22:02:50,324 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:02:50,325 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label53_true-unreach-call.c [2018-10-24 22:02:50,353 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dc45d89d0/7f01b3b466de4dab833ced06ebef6f78/FLAG9563fb57a [2018-10-24 22:02:50,370 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dc45d89d0/7f01b3b466de4dab833ced06ebef6f78 [2018-10-24 22:02:50,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:02:50,383 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:02:50,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:02:50,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:02:50,389 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:02:50,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:02:50" (1/1) ... [2018-10-24 22:02:50,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d0c9b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:50, skipping insertion in model container [2018-10-24 22:02:50,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:02:50" (1/1) ... [2018-10-24 22:02:50,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:02:50,495 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:02:51,293 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:02:51,300 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:02:51,584 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:02:51,608 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:02:51,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:51 WrapperNode [2018-10-24 22:02:51,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:02:51,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:02:51,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:02:51,610 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:02:51,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:51" (1/1) ... [2018-10-24 22:02:51,674 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:51" (1/1) ... [2018-10-24 22:02:51,988 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:02:51,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:02:51,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:02:51,989 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:02:52,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:51" (1/1) ... [2018-10-24 22:02:52,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:51" (1/1) ... [2018-10-24 22:02:52,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:51" (1/1) ... [2018-10-24 22:02:52,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:51" (1/1) ... [2018-10-24 22:02:52,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:51" (1/1) ... [2018-10-24 22:02:52,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:51" (1/1) ... [2018-10-24 22:02:52,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:51" (1/1) ... [2018-10-24 22:02:52,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:02:52,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:02:52,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:02:52,193 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:02:52,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:02:52,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:02:52,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:02:52,271 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:02:52,271 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:02:52,271 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:02:52,271 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:02:52,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:02:52,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:02:52,272 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:02:52,272 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:02:58,492 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:02:58,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:02:58 BoogieIcfgContainer [2018-10-24 22:02:58,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:02:58,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:02:58,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:02:58,498 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:02:58,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:02:50" (1/3) ... [2018-10-24 22:02:58,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a41c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:02:58, skipping insertion in model container [2018-10-24 22:02:58,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:02:51" (2/3) ... [2018-10-24 22:02:58,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a41c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:02:58, skipping insertion in model container [2018-10-24 22:02:58,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:02:58" (3/3) ... [2018-10-24 22:02:58,504 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label53_true-unreach-call.c [2018-10-24 22:02:58,515 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:02:58,525 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:02:58,544 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:02:58,588 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:02:58,588 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:02:58,588 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:02:58,589 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:02:58,589 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:02:58,589 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:02:58,589 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:02:58,589 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:02:58,625 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-24 22:02:58,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-24 22:02:58,636 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:02:58,637 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] [2018-10-24 22:02:58,640 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:02:58,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:02:58,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1710890852, now seen corresponding path program 1 times [2018-10-24 22:02:58,648 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:02:58,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:02:58,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:02:58,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:02:58,701 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:02:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:02:59,132 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:02:59,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:02:59,249 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:02:59,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:02:59,250 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:02:59,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:02:59,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:02:59,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:02:59,277 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-24 22:03:02,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:03:02,977 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-24 22:03:02,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:03:02,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2018-10-24 22:03:02,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:03:03,008 INFO L225 Difference]: With dead ends: 1156 [2018-10-24 22:03:03,009 INFO L226 Difference]: Without dead ends: 744 [2018-10-24 22:03:03,020 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:03:03,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-24 22:03:03,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-24 22:03:03,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-24 22:03:03,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-10-24 22:03:03,134 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 44 [2018-10-24 22:03:03,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:03:03,135 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-10-24 22:03:03,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:03:03,135 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-10-24 22:03:03,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-24 22:03:03,142 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:03:03,143 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:03:03,143 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:03:03,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:03:03,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1470767914, now seen corresponding path program 1 times [2018-10-24 22:03:03,144 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:03:03,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:03:03,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:03:03,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:03:03,146 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:03:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:03:03,409 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:03:03,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:03:03,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:03:03,410 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:03:03,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:03:03,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:03:03,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:03:03,413 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 5 states. [2018-10-24 22:03:08,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:03:08,777 INFO L93 Difference]: Finished difference Result 2194 states and 4083 transitions. [2018-10-24 22:03:08,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:03:08,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-10-24 22:03:08,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:03:08,790 INFO L225 Difference]: With dead ends: 2194 [2018-10-24 22:03:08,790 INFO L226 Difference]: Without dead ends: 1456 [2018-10-24 22:03:08,794 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:03:08,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2018-10-24 22:03:08,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1436. [2018-10-24 22:03:08,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-10-24 22:03:08,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2550 transitions. [2018-10-24 22:03:08,870 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2550 transitions. Word has length 114 [2018-10-24 22:03:08,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:03:08,871 INFO L481 AbstractCegarLoop]: Abstraction has 1436 states and 2550 transitions. [2018-10-24 22:03:08,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:03:08,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2550 transitions. [2018-10-24 22:03:08,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-24 22:03:08,876 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:03:08,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:03:08,877 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:03:08,877 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:03:08,877 INFO L82 PathProgramCache]: Analyzing trace with hash -183601941, now seen corresponding path program 1 times [2018-10-24 22:03:08,878 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:03:08,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:03:08,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:03:08,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:03:08,879 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:03:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:03:09,335 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:03:09,336 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:03:09,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:03:09,336 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:03:09,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:03:09,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:03:09,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:03:09,338 INFO L87 Difference]: Start difference. First operand 1436 states and 2550 transitions. Second operand 6 states. [2018-10-24 22:03:14,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:03:14,263 INFO L93 Difference]: Finished difference Result 3936 states and 7024 transitions. [2018-10-24 22:03:14,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:03:14,265 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-10-24 22:03:14,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:03:14,287 INFO L225 Difference]: With dead ends: 3936 [2018-10-24 22:03:14,288 INFO L226 Difference]: Without dead ends: 2506 [2018-10-24 22:03:14,298 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:03:14,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2018-10-24 22:03:14,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2479. [2018-10-24 22:03:14,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2018-10-24 22:03:14,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3996 transitions. [2018-10-24 22:03:14,386 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3996 transitions. Word has length 143 [2018-10-24 22:03:14,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:03:14,387 INFO L481 AbstractCegarLoop]: Abstraction has 2479 states and 3996 transitions. [2018-10-24 22:03:14,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:03:14,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3996 transitions. [2018-10-24 22:03:14,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-24 22:03:14,391 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:03:14,391 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:03:14,391 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:03:14,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:03:14,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1245396135, now seen corresponding path program 1 times [2018-10-24 22:03:14,392 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:03:14,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:03:14,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:03:14,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:03:14,394 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:03:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:03:14,623 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:03:14,688 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:03:14,688 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:03:14,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:03:14,688 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:03:14,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:03:14,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:03:14,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:03:14,690 INFO L87 Difference]: Start difference. First operand 2479 states and 3996 transitions. Second operand 6 states. [2018-10-24 22:03:18,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:03:18,781 INFO L93 Difference]: Finished difference Result 6050 states and 9896 transitions. [2018-10-24 22:03:18,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:03:18,782 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2018-10-24 22:03:18,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:03:18,806 INFO L225 Difference]: With dead ends: 6050 [2018-10-24 22:03:18,806 INFO L226 Difference]: Without dead ends: 3577 [2018-10-24 22:03:18,817 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:03:18,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2018-10-24 22:03:18,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3545. [2018-10-24 22:03:18,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2018-10-24 22:03:18,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4965 transitions. [2018-10-24 22:03:18,931 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4965 transitions. Word has length 161 [2018-10-24 22:03:18,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:03:18,932 INFO L481 AbstractCegarLoop]: Abstraction has 3545 states and 4965 transitions. [2018-10-24 22:03:18,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:03:18,932 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4965 transitions. [2018-10-24 22:03:18,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-24 22:03:18,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:03:18,936 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 22:03:18,937 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:03:18,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:03:18,937 INFO L82 PathProgramCache]: Analyzing trace with hash -282881664, now seen corresponding path program 1 times [2018-10-24 22:03:18,937 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:03:18,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:03:18,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:03:18,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:03:18,938 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:03:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:03:19,359 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 104 proven. 35 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:03:19,360 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:03:19,360 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:03:19,361 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 245 with the following transitions: [2018-10-24 22:03:19,364 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [431], [433], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 22:03:19,455 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:03:19,455 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:03:22,749 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:03:22,751 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 22:03:22,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:03:22,771 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:03:24,808 INFO L232 lantSequenceWeakener]: Weakened 236 states. On average, predicates are now at 77.86% of their original sizes. [2018-10-24 22:03:24,809 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:03:25,235 INFO L413 sIntCurrentIteration]: We have 243 unified AI predicates [2018-10-24 22:03:25,235 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:03:25,236 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:03:25,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-10-24 22:03:25,237 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:03:25,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 22:03:25,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 22:03:25,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:03:25,238 INFO L87 Difference]: Start difference. First operand 3545 states and 4965 transitions. Second operand 8 states. [2018-10-24 22:03:28,484 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:04:32,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:04:32,299 INFO L93 Difference]: Finished difference Result 7424 states and 10344 transitions. [2018-10-24 22:04:32,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 22:04:32,299 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 244 [2018-10-24 22:04:32,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:04:32,317 INFO L225 Difference]: With dead ends: 7424 [2018-10-24 22:04:32,317 INFO L226 Difference]: Without dead ends: 3885 [2018-10-24 22:04:32,330 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 245 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 22:04:32,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2018-10-24 22:04:32,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3883. [2018-10-24 22:04:32,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3883 states. [2018-10-24 22:04:32,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 5311 transitions. [2018-10-24 22:04:32,429 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 5311 transitions. Word has length 244 [2018-10-24 22:04:32,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:04:32,430 INFO L481 AbstractCegarLoop]: Abstraction has 3883 states and 5311 transitions. [2018-10-24 22:04:32,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 22:04:32,430 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 5311 transitions. [2018-10-24 22:04:32,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-10-24 22:04:32,437 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:04:32,437 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:04:32,438 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:04:32,438 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:04:32,438 INFO L82 PathProgramCache]: Analyzing trace with hash 220813762, now seen corresponding path program 1 times [2018-10-24 22:04:32,439 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:04:32,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:04:32,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:04:32,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:04:32,440 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:04:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:04:32,757 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 22:04:32,979 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 183 proven. 115 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-10-24 22:04:32,979 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:04:32,979 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:04:32,980 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 337 with the following transitions: [2018-10-24 22:04:32,980 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [431], [433], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 22:04:32,988 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:04:32,988 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:04:34,252 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:04:44,290 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:04:44,290 INFO L272 AbstractInterpreter]: Visited 139 different actions 404 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 22:04:44,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:04:44,299 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:04:49,012 INFO L232 lantSequenceWeakener]: Weakened 37 states. On average, predicates are now at 79.85% of their original sizes. [2018-10-24 22:04:49,012 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:05:03,553 INFO L413 sIntCurrentIteration]: We have 335 unified AI predicates [2018-10-24 22:05:03,554 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:05:03,554 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:05:03,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [7] total 27 [2018-10-24 22:05:03,555 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:05:03,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-24 22:05:03,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-24 22:05:03,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2018-10-24 22:05:03,556 INFO L87 Difference]: Start difference. First operand 3883 states and 5311 transitions. Second operand 22 states. Received shutdown request... [2018-10-24 22:06:44,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-24 22:06:44,445 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:06:44,450 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:06:44,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:06:44 BoogieIcfgContainer [2018-10-24 22:06:44,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:06:44,451 INFO L168 Benchmark]: Toolchain (without parser) took 234069.35 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 562.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:06:44,453 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-10-24 22:06:44,453 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1225.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:06:44,454 INFO L168 Benchmark]: Boogie Procedure Inliner took 377.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -849.9 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:06:44,455 INFO L168 Benchmark]: Boogie Preprocessor took 204.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2018-10-24 22:06:44,456 INFO L168 Benchmark]: RCFGBuilder took 6300.01 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 239.3 MB). Peak memory consumption was 239.3 MB. Max. memory is 7.1 GB. [2018-10-24 22:06:44,457 INFO L168 Benchmark]: TraceAbstraction took 225956.64 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.5 GB in the end (delta: -1.6 GB). Peak memory consumption was 305.2 MB. Max. memory is 7.1 GB. [2018-10-24 22:06:44,462 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1225.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 377.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -849.9 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 204.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6300.01 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 239.3 MB). Peak memory consumption was 239.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225956.64 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.5 GB in the end (delta: -1.6 GB). Peak memory consumption was 305.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 118). Cancelled while BasicCegarLoop was constructing difference of abstraction (3883states) and FLOYD_HOARE automaton (currently 20 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (370 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 225.8s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 186.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 835 SDtfs, 6913 SDslu, 801 SDs, 0 SdLazy, 10056 SolverSat, 2429 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 80.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 626 GetRequests, 560 SyntacticMatches, 5 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 20.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3883occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9957719021112279 AbsIntWeakeningRatio, 0.10034602076124567 AbsIntAvgWeakeningVarsNumRemoved, 499.75778546712803 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 81 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 1042 NumberOfCodeBlocks, 1042 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1036 ConstructedInterpolants, 0 QuantifiedInterpolants, 883615 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 448/598 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown