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/Problem14_label56_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:33:32,439 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:33:32,442 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:33:32,454 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:33:32,454 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:33:32,455 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:33:32,456 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:33:32,458 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:33:32,460 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:33:32,460 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:33:32,461 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:33:32,462 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:33:32,463 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:33:32,464 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:33:32,465 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:33:32,465 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:33:32,466 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:33:32,468 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:33:32,470 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:33:32,472 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:33:32,473 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:33:32,474 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:33:32,476 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:33:32,477 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:33:32,477 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:33:32,481 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:33:32,482 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:33:32,483 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:33:32,483 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:33:32,486 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:33:32,486 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:33:32,490 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:33:32,490 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:33:32,491 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:33:32,492 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:33:32,492 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:33:32,493 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 18:33:32,522 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:33:32,523 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:33:32,523 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:33:32,523 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:33:32,526 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:33:32,526 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:33:32,526 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:33:32,526 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:33:32,526 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:33:32,527 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:33:32,527 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:33:32,527 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:33:32,528 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:33:32,528 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:33:32,528 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:33:32,529 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:33:32,529 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:33:32,529 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:33:32,529 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:33:32,529 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:33:32,530 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:33:32,532 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:33:32,532 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:33:32,532 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:33:32,532 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:33:32,532 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:33:32,533 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:33:32,533 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:33:32,533 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:33:32,533 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:33:32,533 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:33:32,534 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:33:32,534 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:33:32,534 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:33:32,579 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:33:32,593 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:33:32,597 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:33:32,599 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:33:32,599 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:33:32,600 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label56_false-unreach-call_false-termination.c [2018-10-24 18:33:32,664 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3ebfb72f2/d3dbbb002a944999858b1d01b21ea920/FLAGa778fb743 [2018-10-24 18:33:33,259 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:33:33,263 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label56_false-unreach-call_false-termination.c [2018-10-24 18:33:33,295 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3ebfb72f2/d3dbbb002a944999858b1d01b21ea920/FLAGa778fb743 [2018-10-24 18:33:33,320 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3ebfb72f2/d3dbbb002a944999858b1d01b21ea920 [2018-10-24 18:33:33,331 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:33:33,332 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:33:33,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:33:33,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:33:33,338 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:33:33,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:33:33" (1/1) ... [2018-10-24 18:33:33,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79efdec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:33, skipping insertion in model container [2018-10-24 18:33:33,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:33:33" (1/1) ... [2018-10-24 18:33:33,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:33:33,432 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:33:33,953 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:33:33,961 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:33:34,163 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:33:34,191 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:33:34,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:34 WrapperNode [2018-10-24 18:33:34,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:33:34,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:33:34,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:33:34,193 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:33:34,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:34" (1/1) ... [2018-10-24 18:33:34,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:34" (1/1) ... [2018-10-24 18:33:34,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:33:34,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:33:34,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:33:34,450 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:33:34,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:34" (1/1) ... [2018-10-24 18:33:34,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:34" (1/1) ... [2018-10-24 18:33:34,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:34" (1/1) ... [2018-10-24 18:33:34,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:34" (1/1) ... [2018-10-24 18:33:34,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:34" (1/1) ... [2018-10-24 18:33:34,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:34" (1/1) ... [2018-10-24 18:33:34,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:34" (1/1) ... [2018-10-24 18:33:34,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:33:34,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:33:34,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:33:34,574 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:33:34,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:34" (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 18:33:34,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:33:34,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:33:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:33:34,639 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:33:34,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:33:34,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:33:34,640 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:33:34,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:33:38,326 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:33:38,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:33:38 BoogieIcfgContainer [2018-10-24 18:33:38,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:33:38,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:33:38,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:33:38,332 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:33:38,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:33:33" (1/3) ... [2018-10-24 18:33:38,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5197296a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:33:38, skipping insertion in model container [2018-10-24 18:33:38,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:34" (2/3) ... [2018-10-24 18:33:38,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5197296a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:33:38, skipping insertion in model container [2018-10-24 18:33:38,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:33:38" (3/3) ... [2018-10-24 18:33:38,335 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label56_false-unreach-call_false-termination.c [2018-10-24 18:33:38,343 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:33:38,352 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:33:38,370 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:33:38,409 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:33:38,411 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:33:38,411 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:33:38,412 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:33:38,412 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:33:38,412 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:33:38,412 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:33:38,412 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:33:38,440 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 18:33:38,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-24 18:33:38,447 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:33:38,448 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] [2018-10-24 18:33:38,451 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:33:38,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:38,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1546404148, now seen corresponding path program 1 times [2018-10-24 18:33:38,460 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:33:38,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:38,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:33:38,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:38,508 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:33:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:33:38,873 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:33:38,974 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 18:33:38,976 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:33:38,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:33:38,977 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:33:38,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:33:38,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:33:39,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:33:39,003 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 18:33:41,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:33:41,054 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 18:33:41,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:33:41,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2018-10-24 18:33:41,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:33:41,081 INFO L225 Difference]: With dead ends: 691 [2018-10-24 18:33:41,081 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 18:33:41,090 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 18:33:41,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 18:33:41,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 18:33:41,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 18:33:41,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-24 18:33:41,186 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 24 [2018-10-24 18:33:41,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:33:41,187 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-24 18:33:41,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:33:41,187 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-24 18:33:41,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-24 18:33:41,193 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:33:41,194 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:33:41,194 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:33:41,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:41,195 INFO L82 PathProgramCache]: Analyzing trace with hash -412678633, now seen corresponding path program 1 times [2018-10-24 18:33:41,195 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:33:41,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:41,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:33:41,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:41,197 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:33:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:33:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:33:41,600 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:33:41,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:33:41,601 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:33:41,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:33:41,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:33:41,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:33:41,604 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-24 18:33:43,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:33:43,891 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-24 18:33:43,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:33:43,892 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-10-24 18:33:43,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:33:43,898 INFO L225 Difference]: With dead ends: 1062 [2018-10-24 18:33:43,898 INFO L226 Difference]: Without dead ends: 634 [2018-10-24 18:33:43,901 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 18:33:43,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-24 18:33:43,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-24 18:33:43,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-24 18:33:43,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-24 18:33:43,953 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 111 [2018-10-24 18:33:43,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:33:43,954 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-24 18:33:43,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:33:43,954 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-24 18:33:43,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-24 18:33:43,957 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:33:43,958 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:33:43,958 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:33:43,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:43,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1086282972, now seen corresponding path program 1 times [2018-10-24 18:33:43,959 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:33:43,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:43,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:33:43,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:43,960 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:33:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:33:44,204 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:33:44,205 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:33:44,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:33:44,205 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:33:44,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:33:44,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:33:44,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:33:44,207 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-10-24 18:33:49,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:33:49,213 INFO L93 Difference]: Finished difference Result 2167 states and 3655 transitions. [2018-10-24 18:33:49,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 18:33:49,213 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2018-10-24 18:33:49,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:33:49,222 INFO L225 Difference]: With dead ends: 2167 [2018-10-24 18:33:49,223 INFO L226 Difference]: Without dead ends: 1172 [2018-10-24 18:33:49,230 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:33:49,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2018-10-24 18:33:49,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1172. [2018-10-24 18:33:49,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1172 states. [2018-10-24 18:33:49,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1890 transitions. [2018-10-24 18:33:49,267 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1890 transitions. Word has length 120 [2018-10-24 18:33:49,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:33:49,268 INFO L481 AbstractCegarLoop]: Abstraction has 1172 states and 1890 transitions. [2018-10-24 18:33:49,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:33:49,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1890 transitions. [2018-10-24 18:33:49,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-24 18:33:49,278 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:33:49,278 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:33:49,278 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:33:49,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:49,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1482099072, now seen corresponding path program 1 times [2018-10-24 18:33:49,279 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:33:49,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:49,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:33:49,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:49,281 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:33:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:33:49,526 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-10-24 18:33:49,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:33:49,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:33:49,527 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:33:49,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:33:49,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:33:49,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:33:49,529 INFO L87 Difference]: Start difference. First operand 1172 states and 1890 transitions. Second operand 4 states. [2018-10-24 18:33:51,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:33:51,841 INFO L93 Difference]: Finished difference Result 4363 states and 7273 transitions. [2018-10-24 18:33:51,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:33:51,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 224 [2018-10-24 18:33:51,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:33:51,872 INFO L225 Difference]: With dead ends: 4363 [2018-10-24 18:33:51,872 INFO L226 Difference]: Without dead ends: 3197 [2018-10-24 18:33:51,888 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:33:51,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3197 states. [2018-10-24 18:33:51,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3197 to 3197. [2018-10-24 18:33:51,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2018-10-24 18:33:52,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4831 transitions. [2018-10-24 18:33:52,013 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4831 transitions. Word has length 224 [2018-10-24 18:33:52,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:33:52,014 INFO L481 AbstractCegarLoop]: Abstraction has 3197 states and 4831 transitions. [2018-10-24 18:33:52,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:33:52,014 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4831 transitions. [2018-10-24 18:33:52,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-24 18:33:52,027 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:33:52,027 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:33:52,027 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:33:52,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:52,028 INFO L82 PathProgramCache]: Analyzing trace with hash 938793631, now seen corresponding path program 1 times [2018-10-24 18:33:52,028 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:33:52,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:52,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:33:52,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:52,029 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:33:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:33:52,595 WARN L179 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-10-24 18:33:53,077 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 34 proven. 101 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:33:53,078 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:33:53,078 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:33:53,079 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 244 with the following transitions: [2018-10-24 18:33:53,081 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [93], [95], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:33:53,154 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:33:53,155 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:33:55,809 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:33:58,413 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:33:58,415 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:33:58,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:58,459 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:34:01,289 INFO L232 lantSequenceWeakener]: Weakened 235 states. On average, predicates are now at 77.47% of their original sizes. [2018-10-24 18:34:01,289 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:34:01,743 INFO L413 sIntCurrentIteration]: We have 242 unified AI predicates [2018-10-24 18:34:01,743 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:34:01,745 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:34:01,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-24 18:34:01,745 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:34:01,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 18:34:01,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 18:34:01,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:34:01,746 INFO L87 Difference]: Start difference. First operand 3197 states and 4831 transitions. Second operand 7 states. [2018-10-24 18:34:25,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:34:25,110 INFO L93 Difference]: Finished difference Result 6573 states and 9934 transitions. [2018-10-24 18:34:25,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:34:25,110 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 243 [2018-10-24 18:34:25,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:34:25,133 INFO L225 Difference]: With dead ends: 6573 [2018-10-24 18:34:25,133 INFO L226 Difference]: Without dead ends: 3382 [2018-10-24 18:34:25,153 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 243 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:34:25,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3382 states. [2018-10-24 18:34:25,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3382 to 3380. [2018-10-24 18:34:25,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3380 states. [2018-10-24 18:34:25,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3380 states to 3380 states and 5022 transitions. [2018-10-24 18:34:25,267 INFO L78 Accepts]: Start accepts. Automaton has 3380 states and 5022 transitions. Word has length 243 [2018-10-24 18:34:25,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:34:25,268 INFO L481 AbstractCegarLoop]: Abstraction has 3380 states and 5022 transitions. [2018-10-24 18:34:25,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 18:34:25,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3380 states and 5022 transitions. [2018-10-24 18:34:25,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-10-24 18:34:25,281 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:34:25,281 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 18:34:25,281 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:34:25,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:34:25,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1617683216, now seen corresponding path program 1 times [2018-10-24 18:34:25,282 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:34:25,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:34:25,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:34:25,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:34:25,284 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:34:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:34:25,823 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 18:34:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 139 proven. 183 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:34:26,461 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:34:26,461 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:34:26,462 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 329 with the following transitions: [2018-10-24 18:34:26,462 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [93], [95], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:34:26,468 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:34:26,468 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:34:28,269 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:34:32,242 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:34:32,243 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:34:32,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:34:32,249 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:34:34,623 INFO L232 lantSequenceWeakener]: Weakened 134 states. On average, predicates are now at 77.93% of their original sizes. [2018-10-24 18:34:34,624 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:35:08,742 INFO L413 sIntCurrentIteration]: We have 327 unified AI predicates [2018-10-24 18:35:08,744 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:35:08,745 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:35:08,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [12] total 34 [2018-10-24 18:35:08,745 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:35:08,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-24 18:35:08,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-24 18:35:08,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2018-10-24 18:35:08,748 INFO L87 Difference]: Start difference. First operand 3380 states and 5022 transitions. Second operand 24 states. [2018-10-24 18:37:08,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:37:08,091 INFO L93 Difference]: Finished difference Result 7134 states and 10695 transitions. [2018-10-24 18:37:08,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-24 18:37:08,092 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 328 [2018-10-24 18:37:08,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:37:08,110 INFO L225 Difference]: With dead ends: 7134 [2018-10-24 18:37:08,110 INFO L226 Difference]: Without dead ends: 3943 [2018-10-24 18:37:08,128 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 341 GetRequests, 265 SyntacticMatches, 40 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 38.0s TimeCoverageRelationStatistics Valid=248, Invalid=1158, Unknown=0, NotChecked=0, Total=1406 [2018-10-24 18:37:08,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3943 states. [2018-10-24 18:37:08,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3943 to 3939. [2018-10-24 18:37:08,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3939 states. [2018-10-24 18:37:08,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 5613 transitions. [2018-10-24 18:37:08,321 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 5613 transitions. Word has length 328 [2018-10-24 18:37:08,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:37:08,322 INFO L481 AbstractCegarLoop]: Abstraction has 3939 states and 5613 transitions. [2018-10-24 18:37:08,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-24 18:37:08,322 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 5613 transitions. [2018-10-24 18:37:08,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-10-24 18:37:08,333 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:37:08,334 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:37:08,334 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:37:08,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:37:08,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1737622820, now seen corresponding path program 1 times [2018-10-24 18:37:08,335 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:37:08,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:37:08,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:37:08,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:37:08,336 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:37:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:37:09,401 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 64 proven. 305 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:37:09,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:37:09,402 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:37:09,402 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 355 with the following transitions: [2018-10-24 18:37:09,403 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [93], [95], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:37:09,408 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:37:09,408 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:37:10,813 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:37:16,569 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:37:16,569 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:37:16,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:37:16,576 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:37:19,691 INFO L232 lantSequenceWeakener]: Weakened 222 states. On average, predicates are now at 77.61% of their original sizes. [2018-10-24 18:37:19,692 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 18:37:34,815 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:37:34,820 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:37:34,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:37:34 BoogieIcfgContainer [2018-10-24 18:37:34,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:37:34,822 INFO L168 Benchmark]: Toolchain (without parser) took 241490.22 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 578.0 MB. Max. memory is 7.1 GB. [2018-10-24 18:37:34,823 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:37:34,823 INFO L168 Benchmark]: CACSL2BoogieTranslator took 858.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:37:34,824 INFO L168 Benchmark]: Boogie Procedure Inliner took 256.97 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -821.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2018-10-24 18:37:34,825 INFO L168 Benchmark]: Boogie Preprocessor took 123.49 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-10-24 18:37:34,826 INFO L168 Benchmark]: RCFGBuilder took 3754.21 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 122.2 MB). Peak memory consumption was 122.2 MB. Max. memory is 7.1 GB. [2018-10-24 18:37:34,827 INFO L168 Benchmark]: TraceAbstraction took 236491.83 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 3.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 484.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:37:34,832 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 858.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 256.97 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -821.7 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.49 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3754.21 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 122.2 MB). Peak memory consumption was 122.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 236491.83 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 3.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 484.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 55). Cancelled while BasicCegarLoop was analyzing trace of length 355 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 9 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 236.4s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 154.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 943 SDtfs, 4629 SDslu, 1030 SDs, 0 SdLazy, 7958 SolverSat, 1739 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 68.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 611 GetRequests, 513 SyntacticMatches, 43 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 39.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3939occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 18.3s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9957932503379545 AbsIntWeakeningRatio, 0.09761388286334056 AbsIntAvgWeakeningVarsNumRemoved, 492.78958785249455 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 6 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 1050 NumberOfCodeBlocks, 1050 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1044 ConstructedInterpolants, 0 QuantifiedInterpolants, 2181295 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 338/622 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown