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/Problem19_label40_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:31:22,357 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:31:22,360 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:31:22,377 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:31:22,377 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:31:22,378 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:31:22,380 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:31:22,382 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:31:22,383 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:31:22,384 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:31:22,385 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:31:22,386 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:31:22,387 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:31:22,388 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:31:22,389 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:31:22,390 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:31:22,390 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:31:22,396 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:31:22,401 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:31:22,403 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:31:22,404 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:31:22,405 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:31:22,407 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:31:22,413 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 22:31:22,414 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 22:31:22,415 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 22:31:22,416 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 22:31:22,416 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 22:31:22,436 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:31:22,437 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:31:22,438 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:31:22,438 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:31:22,438 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:31:22,438 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:31:22,439 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:31:22,439 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:31:22,439 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:31:22,439 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:31:22,439 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:31:22,440 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:31:22,440 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:31:22,441 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:31:22,441 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:31:22,441 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:31:22,441 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:31:22,441 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:31:22,442 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:31:22,442 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:31:22,442 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:31:22,442 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:31:22,443 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:31:22,443 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:31:22,443 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:31:22,443 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:31:22,443 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:31:22,444 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:31:22,444 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:31:22,444 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:31:22,444 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:31:22,445 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:31:22,445 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:31:22,445 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:31:22,492 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:31:22,511 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:31:22,515 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:31:22,517 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:31:22,517 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:31:22,518 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label40_true-unreach-call.c [2018-10-24 22:31:22,597 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/633636433/7d027f843bce4e7c8c4aed5e41c0e8c6/FLAG693b5c27d [2018-10-24 22:31:23,492 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:31:23,494 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label40_true-unreach-call.c [2018-10-24 22:31:23,544 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/633636433/7d027f843bce4e7c8c4aed5e41c0e8c6/FLAG693b5c27d [2018-10-24 22:31:23,560 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/633636433/7d027f843bce4e7c8c4aed5e41c0e8c6 [2018-10-24 22:31:23,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:31:23,579 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:31:23,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:31:23,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:31:23,587 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:31:23,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:31:23" (1/1) ... [2018-10-24 22:31:23,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@675171b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:23, skipping insertion in model container [2018-10-24 22:31:23,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:31:23" (1/1) ... [2018-10-24 22:31:23,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:31:23,879 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:31:25,942 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:31:25,947 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:31:27,048 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:31:27,109 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:31:27,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:27 WrapperNode [2018-10-24 22:31:27,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:31:27,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:31:27,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:31:27,111 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:31:27,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:27" (1/1) ... [2018-10-24 22:31:27,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:27" (1/1) ... [2018-10-24 22:31:27,837 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:31:27,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:31:27,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:31:27,838 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:31:27,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:27" (1/1) ... [2018-10-24 22:31:27,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:27" (1/1) ... [2018-10-24 22:31:27,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:27" (1/1) ... [2018-10-24 22:31:27,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:27" (1/1) ... [2018-10-24 22:31:28,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:27" (1/1) ... [2018-10-24 22:31:28,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:27" (1/1) ... [2018-10-24 22:31:28,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:27" (1/1) ... [2018-10-24 22:31:28,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:31:28,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:31:28,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:31:28,342 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:31:28,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:27" (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 22:31:28,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:31:28,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:31:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-24 22:31:28,419 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-24 22:31:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-24 22:31:28,419 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-24 22:31:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 22:31:28,419 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 22:31:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 22:31:28,420 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 22:31:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:31:28,420 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:31:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:31:28,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:31:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:31:28,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:31:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:31:28,422 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:31:47,270 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:31:47,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:31:47 BoogieIcfgContainer [2018-10-24 22:31:47,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:31:47,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:31:47,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:31:47,276 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:31:47,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:31:23" (1/3) ... [2018-10-24 22:31:47,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8112cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:31:47, skipping insertion in model container [2018-10-24 22:31:47,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:31:27" (2/3) ... [2018-10-24 22:31:47,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8112cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:31:47, skipping insertion in model container [2018-10-24 22:31:47,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:31:47" (3/3) ... [2018-10-24 22:31:47,280 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label40_true-unreach-call.c [2018-10-24 22:31:47,290 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:31:47,302 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:31:47,321 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:31:47,378 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:31:47,378 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:31:47,378 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:31:47,379 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:31:47,379 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:31:47,379 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:31:47,379 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:31:47,379 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:31:47,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-24 22:31:47,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-24 22:31:47,447 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:31:47,448 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:31:47,451 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:31:47,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:31:47,458 INFO L82 PathProgramCache]: Analyzing trace with hash 779425490, now seen corresponding path program 1 times [2018-10-24 22:31:47,460 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:31:47,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:31:47,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:31:47,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:31:47,520 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:31:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:31:47,979 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:31:48,099 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 22:31:48,101 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:31:48,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:31:48,102 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:31:48,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:31:48,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:31:48,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:31:48,127 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-24 22:32:02,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:32:02,972 INFO L93 Difference]: Finished difference Result 4998 states and 9417 transitions. [2018-10-24 22:32:02,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:32:02,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2018-10-24 22:32:02,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:32:03,025 INFO L225 Difference]: With dead ends: 4998 [2018-10-24 22:32:03,025 INFO L226 Difference]: Without dead ends: 3218 [2018-10-24 22:32:03,038 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 22:32:03,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2018-10-24 22:32:03,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3215. [2018-10-24 22:32:03,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-10-24 22:32:03,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5854 transitions. [2018-10-24 22:32:03,259 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5854 transitions. Word has length 53 [2018-10-24 22:32:03,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:32:03,260 INFO L481 AbstractCegarLoop]: Abstraction has 3215 states and 5854 transitions. [2018-10-24 22:32:03,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:32:03,260 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5854 transitions. [2018-10-24 22:32:03,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 22:32:03,273 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:32:03,274 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:03,274 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:32:03,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:32:03,275 INFO L82 PathProgramCache]: Analyzing trace with hash 401616796, now seen corresponding path program 1 times [2018-10-24 22:32:03,275 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:32:03,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:32:03,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:32:03,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:32:03,280 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:32:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:32:03,632 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:32:04,036 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:32:04,037 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:32:04,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:32:04,037 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:32:04,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:32:04,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:32:04,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:32:04,040 INFO L87 Difference]: Start difference. First operand 3215 states and 5854 transitions. Second operand 6 states. [2018-10-24 22:32:34,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:32:34,456 INFO L93 Difference]: Finished difference Result 9340 states and 16946 transitions. [2018-10-24 22:32:34,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:32:34,457 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-24 22:32:34,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:32:34,491 INFO L225 Difference]: With dead ends: 9340 [2018-10-24 22:32:34,491 INFO L226 Difference]: Without dead ends: 6131 [2018-10-24 22:32:34,503 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:32:34,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6131 states. [2018-10-24 22:32:34,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6131 to 6091. [2018-10-24 22:32:34,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6091 states. [2018-10-24 22:32:34,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6091 states to 6091 states and 9637 transitions. [2018-10-24 22:32:34,697 INFO L78 Accepts]: Start accepts. Automaton has 6091 states and 9637 transitions. Word has length 125 [2018-10-24 22:32:34,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:32:34,698 INFO L481 AbstractCegarLoop]: Abstraction has 6091 states and 9637 transitions. [2018-10-24 22:32:34,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:32:34,698 INFO L276 IsEmpty]: Start isEmpty. Operand 6091 states and 9637 transitions. [2018-10-24 22:32:34,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-24 22:32:34,709 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:32:34,709 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:34,709 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:32:34,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:32:34,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1122712729, now seen corresponding path program 1 times [2018-10-24 22:32:34,714 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:32:34,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:32:34,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:32:34,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:32:34,715 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:32:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:32:34,998 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:32:34,998 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:32:34,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:32:34,998 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:32:34,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:32:34,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:32:34,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:32:35,000 INFO L87 Difference]: Start difference. First operand 6091 states and 9637 transitions. Second operand 6 states. [2018-10-24 22:32:58,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:32:58,573 INFO L93 Difference]: Finished difference Result 21091 states and 34228 transitions. [2018-10-24 22:32:58,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:32:58,573 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-10-24 22:32:58,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:32:58,644 INFO L225 Difference]: With dead ends: 21091 [2018-10-24 22:32:58,644 INFO L226 Difference]: Without dead ends: 15006 [2018-10-24 22:32:58,673 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 22:32:58,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15006 states. [2018-10-24 22:32:59,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15006 to 14817. [2018-10-24 22:32:59,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14817 states. [2018-10-24 22:32:59,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14817 states to 14817 states and 22424 transitions. [2018-10-24 22:32:59,071 INFO L78 Accepts]: Start accepts. Automaton has 14817 states and 22424 transitions. Word has length 127 [2018-10-24 22:32:59,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:32:59,072 INFO L481 AbstractCegarLoop]: Abstraction has 14817 states and 22424 transitions. [2018-10-24 22:32:59,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:32:59,072 INFO L276 IsEmpty]: Start isEmpty. Operand 14817 states and 22424 transitions. [2018-10-24 22:32:59,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-24 22:32:59,075 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:32:59,076 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:59,076 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:32:59,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:32:59,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1500340952, now seen corresponding path program 1 times [2018-10-24 22:32:59,077 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:32:59,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:32:59,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:32:59,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:32:59,078 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:32:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:32:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:32:59,640 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:32:59,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:32:59,640 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:32:59,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:32:59,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:32:59,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:32:59,642 INFO L87 Difference]: Start difference. First operand 14817 states and 22424 transitions. Second operand 6 states. [2018-10-24 22:33:51,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:33:51,178 INFO L93 Difference]: Finished difference Result 58684 states and 93370 transitions. [2018-10-24 22:33:51,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:33:51,179 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-10-24 22:33:51,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:33:51,356 INFO L225 Difference]: With dead ends: 58684 [2018-10-24 22:33:51,356 INFO L226 Difference]: Without dead ends: 43873 [2018-10-24 22:33:51,435 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:33:51,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43873 states. [2018-10-24 22:33:52,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43873 to 43779. [2018-10-24 22:33:52,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43779 states. [2018-10-24 22:33:52,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43779 states to 43779 states and 63266 transitions. [2018-10-24 22:33:52,723 INFO L78 Accepts]: Start accepts. Automaton has 43779 states and 63266 transitions. Word has length 149 [2018-10-24 22:33:52,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:33:52,724 INFO L481 AbstractCegarLoop]: Abstraction has 43779 states and 63266 transitions. [2018-10-24 22:33:52,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:33:52,724 INFO L276 IsEmpty]: Start isEmpty. Operand 43779 states and 63266 transitions. [2018-10-24 22:33:52,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-24 22:33:52,728 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:33:52,728 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:52,729 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:33:52,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:33:52,729 INFO L82 PathProgramCache]: Analyzing trace with hash 463189276, now seen corresponding path program 1 times [2018-10-24 22:33:52,729 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:33:52,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:33:52,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:33:52,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:33:52,731 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:33:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:33:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:33:53,037 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:33:53,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:33:53,038 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:33:53,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:33:53,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:33:53,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:33:53,039 INFO L87 Difference]: Start difference. First operand 43779 states and 63266 transitions. Second operand 5 states. [2018-10-24 22:34:19,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:34:19,974 INFO L93 Difference]: Finished difference Result 132704 states and 204434 transitions. [2018-10-24 22:34:19,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 22:34:19,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2018-10-24 22:34:19,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:34:20,316 INFO L225 Difference]: With dead ends: 132704 [2018-10-24 22:34:20,317 INFO L226 Difference]: Without dead ends: 88931 [2018-10-24 22:34:20,410 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:34:20,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88931 states. [2018-10-24 22:34:21,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88931 to 88211. [2018-10-24 22:34:21,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88211 states. [2018-10-24 22:34:22,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88211 states to 88211 states and 122114 transitions. [2018-10-24 22:34:22,171 INFO L78 Accepts]: Start accepts. Automaton has 88211 states and 122114 transitions. Word has length 158 [2018-10-24 22:34:22,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:34:22,172 INFO L481 AbstractCegarLoop]: Abstraction has 88211 states and 122114 transitions. [2018-10-24 22:34:22,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:34:22,172 INFO L276 IsEmpty]: Start isEmpty. Operand 88211 states and 122114 transitions. [2018-10-24 22:34:22,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-24 22:34:22,178 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:34:22,179 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:34:22,179 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:34:22,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:34:22,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1081973083, now seen corresponding path program 1 times [2018-10-24 22:34:22,180 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:34:22,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:34:22,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:34:22,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:34:22,181 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:34:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:34:22,453 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:34:22,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:34:22,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:34:22,454 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:34:22,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:34:22,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:34:22,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:34:22,455 INFO L87 Difference]: Start difference. First operand 88211 states and 122114 transitions. Second operand 6 states. [2018-10-24 22:34:49,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:34:49,283 INFO L93 Difference]: Finished difference Result 208099 states and 304624 transitions. [2018-10-24 22:34:49,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:34:49,284 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 186 [2018-10-24 22:34:49,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:34:49,720 INFO L225 Difference]: With dead ends: 208099 [2018-10-24 22:34:49,721 INFO L226 Difference]: Without dead ends: 119894 [2018-10-24 22:34:49,918 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 22:34:50,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119894 states. [2018-10-24 22:34:51,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119894 to 119539. [2018-10-24 22:34:51,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119539 states. [2018-10-24 22:34:52,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119539 states to 119539 states and 161762 transitions. [2018-10-24 22:34:52,142 INFO L78 Accepts]: Start accepts. Automaton has 119539 states and 161762 transitions. Word has length 186 [2018-10-24 22:34:52,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:34:52,142 INFO L481 AbstractCegarLoop]: Abstraction has 119539 states and 161762 transitions. [2018-10-24 22:34:52,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:34:52,142 INFO L276 IsEmpty]: Start isEmpty. Operand 119539 states and 161762 transitions. [2018-10-24 22:34:52,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-24 22:34:52,160 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:34:52,160 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 22:34:52,161 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:34:52,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:34:52,161 INFO L82 PathProgramCache]: Analyzing trace with hash 106766042, now seen corresponding path program 1 times [2018-10-24 22:34:52,161 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:34:52,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:34:52,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:34:52,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:34:52,164 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:34:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:34:52,432 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:34:52,818 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 92 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:34:52,819 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:34:52,819 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:34:52,820 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 225 with the following transitions: [2018-10-24 22:34:52,824 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5550], [5552], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5877], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-24 22:34:52,918 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:34:52,919 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:34:57,194 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:34:57,277 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:34:57,279 INFO L272 AbstractInterpreter]: Visited 104 different actions 104 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 22:34:57,290 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:34:57,290 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:35:00,113 INFO L232 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 75.72% of their original sizes. [2018-10-24 22:35:00,114 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:35:00,621 INFO L413 sIntCurrentIteration]: We have 223 unified AI predicates [2018-10-24 22:35:00,622 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:35:00,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:35:00,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 22:35:00,623 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:35:00,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 22:35:00,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 22:35:00,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:35:00,625 INFO L87 Difference]: Start difference. First operand 119539 states and 161762 transitions. Second operand 7 states. Received shutdown request... [2018-10-24 22:35:11,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:35:11,259 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:35:11,266 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:35:11,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:35:11 BoogieIcfgContainer [2018-10-24 22:35:11,267 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:35:11,268 INFO L168 Benchmark]: Toolchain (without parser) took 227692.91 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.5 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 22:35:11,269 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 22:35:11,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3528.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-24 22:35:11,271 INFO L168 Benchmark]: Boogie Procedure Inliner took 726.54 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 854.1 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:35:11,273 INFO L168 Benchmark]: Boogie Preprocessor took 503.99 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:35:11,275 INFO L168 Benchmark]: RCFGBuilder took 18929.51 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 173.0 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 499.7 MB). Peak memory consumption was 672.7 MB. Max. memory is 7.1 GB. [2018-10-24 22:35:11,276 INFO L168 Benchmark]: TraceAbstraction took 203994.63 ms. Allocated memory was 2.6 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -479.4 MB). Peak memory consumption was 772.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:35:11,286 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3528.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 726.54 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 854.1 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 503.99 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18929.51 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 173.0 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 499.7 MB). Peak memory consumption was 672.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203994.63 ms. Allocated memory was 2.6 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -479.4 MB). Peak memory consumption was 772.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 154]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 154). Cancelled while BasicCegarLoop was constructing difference of abstraction (119539states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (2505 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 203.8s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 186.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3665 SDtfs, 38576 SDslu, 4224 SDs, 0 SdLazy, 65792 SolverSat, 15584 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 154.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 276 GetRequests, 232 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119539occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.4s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9958330458778888 AbsIntWeakeningRatio, 0.12556053811659193 AbsIntAvgWeakeningVarsNumRemoved, 1037.0313901345291 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 1401 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 1022 NumberOfCodeBlocks, 1022 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1015 ConstructedInterpolants, 0 QuantifiedInterpolants, 662486 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 327/392 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown