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/Problem12_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:20:27,368 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:20:27,371 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:20:27,383 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:20:27,383 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:20:27,385 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:20:27,386 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:20:27,389 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:20:27,392 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:20:27,392 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:20:27,395 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:20:27,395 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:20:27,397 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:20:27,398 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:20:27,401 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:20:27,402 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:20:27,403 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:20:27,405 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:20:27,407 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:20:27,409 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:20:27,410 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:20:27,411 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:20:27,414 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:20:27,414 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:20:27,414 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:20:27,415 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:20:27,416 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:20:27,417 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:20:27,418 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:20:27,419 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:20:27,420 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:20:27,421 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:20:27,421 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:20:27,421 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:20:27,422 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:20:27,423 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:20:27,423 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 21:20:27,448 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:20:27,448 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:20:27,450 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:20:27,450 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:20:27,450 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:20:27,450 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:20:27,450 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:20:27,451 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:20:27,451 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:20:27,451 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:20:27,451 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:20:27,451 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:20:27,453 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:20:27,453 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:20:27,453 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:20:27,453 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:20:27,453 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:20:27,454 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:20:27,454 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:20:27,454 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:20:27,454 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:20:27,454 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:20:27,455 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:20:27,456 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:20:27,456 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:20:27,457 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:20:27,457 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:20:27,457 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:20:27,457 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:20:27,457 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:20:27,458 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:20:27,458 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:20:27,458 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:20:27,458 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:20:27,507 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:20:27,525 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:20:27,529 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:20:27,531 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:20:27,532 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:20:27,533 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label17_true-unreach-call.c [2018-10-24 21:20:27,604 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c3406ec29/a3459e11ae48447b98ded800427d7dd8/FLAG3c72fab41 [2018-10-24 21:20:28,358 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:20:28,359 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label17_true-unreach-call.c [2018-10-24 21:20:28,388 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c3406ec29/a3459e11ae48447b98ded800427d7dd8/FLAG3c72fab41 [2018-10-24 21:20:28,404 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c3406ec29/a3459e11ae48447b98ded800427d7dd8 [2018-10-24 21:20:28,417 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:20:28,419 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:20:28,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:20:28,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:20:28,428 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:20:28,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:20:28" (1/1) ... [2018-10-24 21:20:28,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4621111d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:28, skipping insertion in model container [2018-10-24 21:20:28,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:20:28" (1/1) ... [2018-10-24 21:20:28,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:20:28,616 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:20:29,980 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:20:29,985 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:20:30,576 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:20:30,610 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:20:30,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:30 WrapperNode [2018-10-24 21:20:30,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:20:30,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:20:30,612 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:20:30,613 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:20:30,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:30" (1/1) ... [2018-10-24 21:20:30,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:30" (1/1) ... [2018-10-24 21:20:31,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:20:31,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:20:31,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:20:31,060 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:20:31,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:30" (1/1) ... [2018-10-24 21:20:31,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:30" (1/1) ... [2018-10-24 21:20:31,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:30" (1/1) ... [2018-10-24 21:20:31,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:30" (1/1) ... [2018-10-24 21:20:31,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:30" (1/1) ... [2018-10-24 21:20:31,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:30" (1/1) ... [2018-10-24 21:20:31,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:30" (1/1) ... [2018-10-24 21:20:31,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:20:31,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:20:31,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:20:31,368 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:20:31,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:30" (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 21:20:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:20:31,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:20:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:20:31,448 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:20:31,448 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:20:31,449 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:20:31,449 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:20:31,449 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:20:31,449 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:20:31,449 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:20:31,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:20:31,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:20:31,451 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:20:31,452 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:20:42,354 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:20:42,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:20:42 BoogieIcfgContainer [2018-10-24 21:20:42,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:20:42,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:20:42,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:20:42,361 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:20:42,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:20:28" (1/3) ... [2018-10-24 21:20:42,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4da01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:20:42, skipping insertion in model container [2018-10-24 21:20:42,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:30" (2/3) ... [2018-10-24 21:20:42,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4da01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:20:42, skipping insertion in model container [2018-10-24 21:20:42,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:20:42" (3/3) ... [2018-10-24 21:20:42,365 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label17_true-unreach-call.c [2018-10-24 21:20:42,375 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:20:42,387 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:20:42,406 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:20:42,469 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:20:42,469 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:20:42,469 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:20:42,470 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:20:42,470 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:20:42,470 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:20:42,470 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:20:42,470 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:20:42,514 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-24 21:20:42,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-24 21:20:42,525 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:20:42,526 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] [2018-10-24 21:20:42,528 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:20:42,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:20:42,536 INFO L82 PathProgramCache]: Analyzing trace with hash -832809957, now seen corresponding path program 1 times [2018-10-24 21:20:42,538 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:20:42,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:20:42,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:20:42,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:20:42,594 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:20:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:20:43,079 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 21:20:43,084 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:20:43,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:20:43,085 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:20:43,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:20:43,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:20:43,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:20:43,134 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-24 21:20:51,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:20:51,850 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-24 21:20:51,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:20:51,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-10-24 21:20:51,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:20:51,899 INFO L225 Difference]: With dead ends: 2446 [2018-10-24 21:20:51,899 INFO L226 Difference]: Without dead ends: 1604 [2018-10-24 21:20:51,911 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:20:51,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-24 21:20:52,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-24 21:20:52,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-24 21:20:52,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-10-24 21:20:52,097 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 47 [2018-10-24 21:20:52,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:20:52,097 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-10-24 21:20:52,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:20:52,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-10-24 21:20:52,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-24 21:20:52,105 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:20:52,105 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:20:52,106 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:20:52,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:20:52,106 INFO L82 PathProgramCache]: Analyzing trace with hash -342093644, now seen corresponding path program 1 times [2018-10-24 21:20:52,106 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:20:52,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:20:52,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:20:52,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:20:52,108 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:20:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:20:52,446 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:20:52,507 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:20:52,507 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:20:52,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:20:52,508 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:20:52,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:20:52,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:20:52,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:20:52,511 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-10-24 21:21:07,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:21:07,567 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-10-24 21:21:07,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:21:07,568 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-10-24 21:21:07,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:21:07,590 INFO L225 Difference]: With dead ends: 4818 [2018-10-24 21:21:07,590 INFO L226 Difference]: Without dead ends: 3220 [2018-10-24 21:21:07,596 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:21:07,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-10-24 21:21:07,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-10-24 21:21:07,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-10-24 21:21:07,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-10-24 21:21:07,701 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 121 [2018-10-24 21:21:07,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:21:07,702 INFO L481 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-10-24 21:21:07,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:21:07,702 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-10-24 21:21:07,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-24 21:21:07,706 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:21:07,707 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:07,707 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:21:07,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:21:07,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1410131373, now seen corresponding path program 1 times [2018-10-24 21:21:07,707 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:21:07,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:07,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:21:07,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:07,709 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:21:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:21:07,958 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:21:07,958 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:21:07,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:21:07,959 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:21:07,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:21:07,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:21:07,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:21:07,960 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-10-24 21:21:24,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:21:24,192 INFO L93 Difference]: Finished difference Result 11157 states and 19866 transitions. [2018-10-24 21:21:24,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:21:24,194 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-10-24 21:21:24,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:21:24,241 INFO L225 Difference]: With dead ends: 11157 [2018-10-24 21:21:24,241 INFO L226 Difference]: Without dead ends: 7977 [2018-10-24 21:21:24,257 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 21:21:24,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7977 states. [2018-10-24 21:21:24,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7977 to 7930. [2018-10-24 21:21:24,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7930 states. [2018-10-24 21:21:24,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7930 states to 7930 states and 13434 transitions. [2018-10-24 21:21:24,457 INFO L78 Accepts]: Start accepts. Automaton has 7930 states and 13434 transitions. Word has length 126 [2018-10-24 21:21:24,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:21:24,458 INFO L481 AbstractCegarLoop]: Abstraction has 7930 states and 13434 transitions. [2018-10-24 21:21:24,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:21:24,458 INFO L276 IsEmpty]: Start isEmpty. Operand 7930 states and 13434 transitions. [2018-10-24 21:21:24,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-24 21:21:24,462 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:21:24,462 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:24,462 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:21:24,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:21:24,463 INFO L82 PathProgramCache]: Analyzing trace with hash 750688061, now seen corresponding path program 1 times [2018-10-24 21:21:24,463 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:21:24,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:24,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:21:24,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:24,464 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:21:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:21:24,748 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:21:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:21:24,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:21:24,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:21:24,980 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:21:24,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:21:24,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:21:24,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:21:24,981 INFO L87 Difference]: Start difference. First operand 7930 states and 13434 transitions. Second operand 6 states. [2018-10-24 21:21:37,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:21:37,205 INFO L93 Difference]: Finished difference Result 23012 states and 39580 transitions. [2018-10-24 21:21:37,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:21:37,206 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-10-24 21:21:37,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:21:37,279 INFO L225 Difference]: With dead ends: 23012 [2018-10-24 21:21:37,279 INFO L226 Difference]: Without dead ends: 15088 [2018-10-24 21:21:37,319 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 21:21:37,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15088 states. [2018-10-24 21:21:37,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15088 to 15003. [2018-10-24 21:21:37,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15003 states. [2018-10-24 21:21:37,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15003 states to 15003 states and 23076 transitions. [2018-10-24 21:21:37,694 INFO L78 Accepts]: Start accepts. Automaton has 15003 states and 23076 transitions. Word has length 134 [2018-10-24 21:21:37,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:21:37,695 INFO L481 AbstractCegarLoop]: Abstraction has 15003 states and 23076 transitions. [2018-10-24 21:21:37,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:21:37,695 INFO L276 IsEmpty]: Start isEmpty. Operand 15003 states and 23076 transitions. [2018-10-24 21:21:37,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-24 21:21:37,706 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:21:37,706 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:37,707 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:21:37,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:21:37,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1560155152, now seen corresponding path program 1 times [2018-10-24 21:21:37,707 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:21:37,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:37,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:21:37,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:37,708 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:21:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:21:37,973 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:21:38,188 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:21:38,188 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:21:38,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:21:38,189 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:21:38,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:21:38,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:21:38,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:21:38,190 INFO L87 Difference]: Start difference. First operand 15003 states and 23076 transitions. Second operand 6 states. [2018-10-24 21:21:48,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:21:48,544 INFO L93 Difference]: Finished difference Result 37556 states and 59390 transitions. [2018-10-24 21:21:48,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:21:48,545 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2018-10-24 21:21:48,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:21:48,643 INFO L225 Difference]: With dead ends: 37556 [2018-10-24 21:21:48,643 INFO L226 Difference]: Without dead ends: 22559 [2018-10-24 21:21:48,700 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 21:21:48,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22559 states. [2018-10-24 21:21:49,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22559 to 22439. [2018-10-24 21:21:49,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22439 states. [2018-10-24 21:21:49,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22439 states to 22439 states and 31537 transitions. [2018-10-24 21:21:49,184 INFO L78 Accepts]: Start accepts. Automaton has 22439 states and 31537 transitions. Word has length 167 [2018-10-24 21:21:49,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:21:49,184 INFO L481 AbstractCegarLoop]: Abstraction has 22439 states and 31537 transitions. [2018-10-24 21:21:49,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:21:49,184 INFO L276 IsEmpty]: Start isEmpty. Operand 22439 states and 31537 transitions. [2018-10-24 21:21:49,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-24 21:21:49,195 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:21:49,196 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:21:49,196 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:21:49,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:21:49,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1155888016, now seen corresponding path program 1 times [2018-10-24 21:21:49,196 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:21:49,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:49,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:21:49,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:49,198 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:21:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:21:49,858 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 83 proven. 67 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 21:21:49,859 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:21:49,859 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:21:49,861 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2018-10-24 21:21:49,864 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2143], [2145], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2460], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 21:21:49,950 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:21:49,951 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:21:57,178 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:21:57,179 INFO L272 AbstractInterpreter]: Visited 103 different actions 199 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 21:21:57,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:21:57,205 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:22:00,629 INFO L232 lantSequenceWeakener]: Weakened 119 states. On average, predicates are now at 76.37% of their original sizes. [2018-10-24 21:22:00,629 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:22:16,568 INFO L413 sIntCurrentIteration]: We have 217 unified AI predicates [2018-10-24 21:22:16,568 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:22:16,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:22:16,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-10-24 21:22:16,570 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:22:16,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-24 21:22:16,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-24 21:22:16,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2018-10-24 21:22:16,572 INFO L87 Difference]: Start difference. First operand 22439 states and 31537 transitions. Second operand 23 states. [2018-10-24 21:22:54,301 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 21:24:16,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 21:24:16,498 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:24:16,502 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:24:16,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:24:16 BoogieIcfgContainer [2018-10-24 21:24:16,503 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:24:16,505 INFO L168 Benchmark]: Toolchain (without parser) took 228086.93 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 4.0 GB in the end (delta: -2.6 GB). Peak memory consumption was 160.5 MB. Max. memory is 7.1 GB. [2018-10-24 21:24:16,506 INFO L168 Benchmark]: CDTParser took 0.23 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 21:24:16,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2191.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:24:16,508 INFO L168 Benchmark]: Boogie Procedure Inliner took 446.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 802.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:24:16,509 INFO L168 Benchmark]: Boogie Preprocessor took 307.37 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. [2018-10-24 21:24:16,510 INFO L168 Benchmark]: RCFGBuilder took 10989.87 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 170.4 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -169.4 MB). Peak memory consumption was 663.6 MB. Max. memory is 7.1 GB. [2018-10-24 21:24:16,514 INFO L168 Benchmark]: TraceAbstraction took 214145.61 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 164.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:24:16,519 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 2191.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 446.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 802.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 307.37 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10989.87 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 170.4 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -169.4 MB). Peak memory consumption was 663.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214145.61 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 164.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 132). Cancelled while BasicCegarLoop was constructing difference of abstraction (22439states) and FLOYD_HOARE automaton (currently 17 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (2157 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 214.0s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 182.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 770 SDtfs, 15907 SDslu, 672 SDs, 0 SdLazy, 27875 SolverSat, 7257 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 105.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 268 GetRequests, 203 SyntacticMatches, 9 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 20.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22439occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9948103509393831 AbsIntWeakeningRatio, 0.12442396313364056 AbsIntAvgWeakeningVarsNumRemoved, 485.6175115207373 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 286 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 813 NumberOfCodeBlocks, 813 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 807 ConstructedInterpolants, 0 QuantifiedInterpolants, 578305 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 249/316 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown