java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label18_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:08:27,504 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:08:27,509 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:08:27,525 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:08:27,525 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:08:27,526 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:08:27,527 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:08:27,529 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:08:27,531 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:08:27,532 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:08:27,533 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:08:27,533 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:08:27,534 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:08:27,535 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:08:27,536 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:08:27,537 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:08:27,538 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:08:27,540 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:08:27,542 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:08:27,544 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:08:27,545 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:08:27,546 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:08:27,549 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 00:08:27,549 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 00:08:27,549 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 00:08:27,550 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 00:08:27,551 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 00:08:27,552 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 00:08:27,553 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 00:08:27,554 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 00:08:27,555 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 00:08:27,555 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 00:08:27,556 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 00:08:27,556 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 00:08:27,557 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 00:08:27,558 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 00:08:27,558 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 [2018-10-27 00:08:27,578 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:08:27,579 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:08:27,580 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:08:27,580 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:08:27,580 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:08:27,580 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:08:27,581 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:08:27,581 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:08:27,581 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 00:08:27,581 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:08:27,581 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:08:27,582 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:08:27,582 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:08:27,582 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:08:27,583 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:08:27,583 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:08:27,583 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:08:27,583 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:08:27,583 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:08:27,584 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:08:27,584 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:08:27,584 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:08:27,584 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:08:27,585 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:08:27,585 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:08:27,585 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:08:27,585 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:08:27,585 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:08:27,585 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:08:27,586 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:08:27,586 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:08:27,586 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:08:27,586 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 00:08:27,586 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 00:08:27,631 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:08:27,643 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:08:27,647 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:08:27,649 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:08:27,649 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:08:27,650 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label18_false-unreach-call.c [2018-10-27 00:08:27,707 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b50461984/661af506508645089aea7b217318b4cf/FLAG38badd1e0 [2018-10-27 00:08:28,423 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:08:28,424 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label18_false-unreach-call.c [2018-10-27 00:08:28,445 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b50461984/661af506508645089aea7b217318b4cf/FLAG38badd1e0 [2018-10-27 00:08:28,466 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b50461984/661af506508645089aea7b217318b4cf [2018-10-27 00:08:28,478 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:08:28,480 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:08:28,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:08:28,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:08:28,485 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:08:28,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:08:28" (1/1) ... [2018-10-27 00:08:28,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e4a3aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:28, skipping insertion in model container [2018-10-27 00:08:28,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:08:28" (1/1) ... [2018-10-27 00:08:28,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:08:28,596 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:08:29,363 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:08:29,367 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:08:29,636 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:08:29,658 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:08:29,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:29 WrapperNode [2018-10-27 00:08:29,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:08:29,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:08:29,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:08:29,660 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:08:29,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:29" (1/1) ... [2018-10-27 00:08:29,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:29" (1/1) ... [2018-10-27 00:08:30,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:08:30,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:08:30,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:08:30,010 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:08:30,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:29" (1/1) ... [2018-10-27 00:08:30,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:29" (1/1) ... [2018-10-27 00:08:30,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:29" (1/1) ... [2018-10-27 00:08:30,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:29" (1/1) ... [2018-10-27 00:08:30,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:29" (1/1) ... [2018-10-27 00:08:30,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:29" (1/1) ... [2018-10-27 00:08:30,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:29" (1/1) ... [2018-10-27 00:08:30,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:08:30,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:08:30,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:08:30,194 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:08:30,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:29" (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 [2018-10-27 00:08:30,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:08:30,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:08:30,265 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 00:08:30,265 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 00:08:30,265 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 00:08:30,265 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 00:08:30,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:08:30,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:08:30,267 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:08:30,267 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:08:36,460 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:08:36,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:08:36 BoogieIcfgContainer [2018-10-27 00:08:36,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:08:36,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:08:36,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:08:36,471 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:08:36,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:08:28" (1/3) ... [2018-10-27 00:08:36,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8371a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:08:36, skipping insertion in model container [2018-10-27 00:08:36,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:29" (2/3) ... [2018-10-27 00:08:36,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8371a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:08:36, skipping insertion in model container [2018-10-27 00:08:36,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:08:36" (3/3) ... [2018-10-27 00:08:36,476 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label18_false-unreach-call.c [2018-10-27 00:08:36,487 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:08:36,500 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:08:36,520 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:08:36,561 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:08:36,561 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:08:36,561 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:08:36,561 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:08:36,561 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:08:36,562 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:08:36,562 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:08:36,562 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:08:36,594 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 00:08:36,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-27 00:08:36,600 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:08:36,602 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:08:36,604 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:08:36,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:08:36,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1130259964, now seen corresponding path program 1 times [2018-10-27 00:08:36,614 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:08:36,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:36,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:08:36,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:36,671 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:08:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:08:37,039 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:08:37,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:08:37,137 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:08:37,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 00:08:37,138 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:08:37,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 00:08:37,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 00:08:37,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:08:37,163 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-27 00:08:40,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:08:40,630 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-27 00:08:40,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 00:08:40,632 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-10-27 00:08:40,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:08:40,656 INFO L225 Difference]: With dead ends: 1156 [2018-10-27 00:08:40,657 INFO L226 Difference]: Without dead ends: 744 [2018-10-27 00:08:40,667 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 [2018-10-27 00:08:40,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-27 00:08:40,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-27 00:08:40,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-27 00:08:40,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-10-27 00:08:40,797 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 14 [2018-10-27 00:08:40,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:08:40,798 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-10-27 00:08:40,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 00:08:40,801 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-10-27 00:08:40,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-27 00:08:40,809 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:08:40,810 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:08:40,810 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:08:40,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:08:40,811 INFO L82 PathProgramCache]: Analyzing trace with hash -3982677, now seen corresponding path program 1 times [2018-10-27 00:08:40,811 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:08:40,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:40,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:08:40,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:40,813 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:08:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:08:41,110 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:08:41,110 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:08:41,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:08:41,111 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:08:41,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:08:41,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:08:41,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:08:41,114 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 6 states. [2018-10-27 00:08:48,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:08:48,127 INFO L93 Difference]: Finished difference Result 2191 states and 4077 transitions. [2018-10-27 00:08:48,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:08:48,128 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2018-10-27 00:08:48,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:08:48,141 INFO L225 Difference]: With dead ends: 2191 [2018-10-27 00:08:48,141 INFO L226 Difference]: Without dead ends: 1453 [2018-10-27 00:08:48,146 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 [2018-10-27 00:08:48,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2018-10-27 00:08:48,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1436. [2018-10-27 00:08:48,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-10-27 00:08:48,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2556 transitions. [2018-10-27 00:08:48,222 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2556 transitions. Word has length 85 [2018-10-27 00:08:48,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:08:48,223 INFO L481 AbstractCegarLoop]: Abstraction has 1436 states and 2556 transitions. [2018-10-27 00:08:48,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:08:48,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2556 transitions. [2018-10-27 00:08:48,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-27 00:08:48,231 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:08:48,231 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:08:48,231 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:08:48,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:08:48,232 INFO L82 PathProgramCache]: Analyzing trace with hash 461895267, now seen corresponding path program 1 times [2018-10-27 00:08:48,232 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:08:48,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:48,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:08:48,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:48,234 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:08:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:08:48,557 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:08:48,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:08:48,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:08:48,558 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:08:48,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:08:48,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:08:48,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:08:48,559 INFO L87 Difference]: Start difference. First operand 1436 states and 2556 transitions. Second operand 6 states. [2018-10-27 00:08:54,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:08:54,239 INFO L93 Difference]: Finished difference Result 3925 states and 7037 transitions. [2018-10-27 00:08:54,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:08:54,242 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2018-10-27 00:08:54,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:08:54,261 INFO L225 Difference]: With dead ends: 3925 [2018-10-27 00:08:54,261 INFO L226 Difference]: Without dead ends: 2495 [2018-10-27 00:08:54,270 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 [2018-10-27 00:08:54,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2018-10-27 00:08:54,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2466. [2018-10-27 00:08:54,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2466 states. [2018-10-27 00:08:54,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4043 transitions. [2018-10-27 00:08:54,363 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4043 transitions. Word has length 89 [2018-10-27 00:08:54,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:08:54,364 INFO L481 AbstractCegarLoop]: Abstraction has 2466 states and 4043 transitions. [2018-10-27 00:08:54,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:08:54,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4043 transitions. [2018-10-27 00:08:54,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-27 00:08:54,371 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:08:54,371 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:08:54,372 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:08:54,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:08:54,372 INFO L82 PathProgramCache]: Analyzing trace with hash -179153430, now seen corresponding path program 1 times [2018-10-27 00:08:54,372 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:08:54,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:54,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:08:54,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:54,375 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:08:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:08:54,630 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:08:54,631 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:08:54,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:08:54,631 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:08:54,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:08:54,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:08:54,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:08:54,632 INFO L87 Difference]: Start difference. First operand 2466 states and 4043 transitions. Second operand 6 states. [2018-10-27 00:09:01,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:09:01,585 INFO L93 Difference]: Finished difference Result 6972 states and 11519 transitions. [2018-10-27 00:09:01,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:09:01,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2018-10-27 00:09:01,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:09:01,615 INFO L225 Difference]: With dead ends: 6972 [2018-10-27 00:09:01,616 INFO L226 Difference]: Without dead ends: 4512 [2018-10-27 00:09:01,635 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 [2018-10-27 00:09:01,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4512 states. [2018-10-27 00:09:01,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4512 to 4480. [2018-10-27 00:09:01,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4480 states. [2018-10-27 00:09:01,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4480 states to 4480 states and 6530 transitions. [2018-10-27 00:09:01,772 INFO L78 Accepts]: Start accepts. Automaton has 4480 states and 6530 transitions. Word has length 120 [2018-10-27 00:09:01,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:09:01,778 INFO L481 AbstractCegarLoop]: Abstraction has 4480 states and 6530 transitions. [2018-10-27 00:09:01,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:09:01,779 INFO L276 IsEmpty]: Start isEmpty. Operand 4480 states and 6530 transitions. [2018-10-27 00:09:01,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-27 00:09:01,788 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:09:01,788 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:09:01,789 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:09:01,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:09:01,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1769086126, now seen corresponding path program 1 times [2018-10-27 00:09:01,790 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:09:01,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:09:01,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:09:01,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:09:01,792 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:09:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:09:02,435 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:09:02,436 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:09:02,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:09:02,436 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:09:02,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:09:02,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:09:02,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:09:02,438 INFO L87 Difference]: Start difference. First operand 4480 states and 6530 transitions. Second operand 6 states. [2018-10-27 00:09:12,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:09:12,964 INFO L93 Difference]: Finished difference Result 16690 states and 25771 transitions. [2018-10-27 00:09:12,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:09:12,964 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2018-10-27 00:09:12,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:09:13,044 INFO L225 Difference]: With dead ends: 16690 [2018-10-27 00:09:13,044 INFO L226 Difference]: Without dead ends: 12216 [2018-10-27 00:09:13,101 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-27 00:09:13,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12216 states. [2018-10-27 00:09:13,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12216 to 12211. [2018-10-27 00:09:13,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12211 states. [2018-10-27 00:09:13,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12211 states to 12211 states and 17519 transitions. [2018-10-27 00:09:13,459 INFO L78 Accepts]: Start accepts. Automaton has 12211 states and 17519 transitions. Word has length 164 [2018-10-27 00:09:13,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:09:13,459 INFO L481 AbstractCegarLoop]: Abstraction has 12211 states and 17519 transitions. [2018-10-27 00:09:13,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:09:13,459 INFO L276 IsEmpty]: Start isEmpty. Operand 12211 states and 17519 transitions. [2018-10-27 00:09:13,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-27 00:09:13,471 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:09:13,471 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:09:13,472 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:09:13,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:09:13,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1438063964, now seen corresponding path program 1 times [2018-10-27 00:09:13,472 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:09:13,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:09:13,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:09:13,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:09:13,476 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:09:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:09:13,739 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:09:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 14 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 00:09:13,879 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:09:13,879 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:09:13,879 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-10-27 00:09:13,882 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [191], [193], [196], [204], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [680], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [992], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 00:09:13,972 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:09:13,972 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:09:15,368 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:09:18,055 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:09:18,056 INFO L272 AbstractInterpreter]: Visited 155 different actions 155 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 00:09:18,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:09:18,087 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:09:20,062 INFO L227 lantSequenceWeakener]: Weakened 228 states. On average, predicates are now at 77.28% of their original sizes. [2018-10-27 00:09:20,063 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:09:20,604 INFO L415 sIntCurrentIteration]: We unified 235 AI predicates to 235 [2018-10-27 00:09:20,604 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:09:20,605 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:09:20,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-10-27 00:09:20,606 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:09:20,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 00:09:20,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 00:09:20,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 00:09:20,607 INFO L87 Difference]: Start difference. First operand 12211 states and 17519 transitions. Second operand 8 states. [2018-10-27 00:09:47,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:09:47,012 INFO L93 Difference]: Finished difference Result 24756 states and 35493 transitions. [2018-10-27 00:09:47,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 00:09:47,013 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 236 [2018-10-27 00:09:47,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:09:47,084 INFO L225 Difference]: With dead ends: 24756 [2018-10-27 00:09:47,084 INFO L226 Difference]: Without dead ends: 12551 [2018-10-27 00:09:47,155 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 237 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 00:09:47,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12551 states. [2018-10-27 00:09:47,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12551 to 12549. [2018-10-27 00:09:47,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12549 states. [2018-10-27 00:09:47,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12549 states to 12549 states and 17866 transitions. [2018-10-27 00:09:47,548 INFO L78 Accepts]: Start accepts. Automaton has 12549 states and 17866 transitions. Word has length 236 [2018-10-27 00:09:47,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:09:47,549 INFO L481 AbstractCegarLoop]: Abstraction has 12549 states and 17866 transitions. [2018-10-27 00:09:47,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 00:09:47,549 INFO L276 IsEmpty]: Start isEmpty. Operand 12549 states and 17866 transitions. [2018-10-27 00:09:47,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-10-27 00:09:47,573 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:09:47,573 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-27 00:09:47,574 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:09:47,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:09:47,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1449851262, now seen corresponding path program 1 times [2018-10-27 00:09:47,574 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:09:47,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:09:47,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:09:47,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:09:47,576 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:09:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:09:47,907 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:09:48,250 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 27 proven. 156 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-27 00:09:48,250 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:09:48,251 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:09:48,251 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 329 with the following transitions: [2018-10-27 00:09:48,251 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [191], [193], [196], [204], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [680], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [992], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 00:09:48,259 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:09:48,259 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:09:49,674 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:10:11,626 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:10:11,627 INFO L272 AbstractInterpreter]: Visited 159 different actions 617 times. Merged at 5 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 00:10:11,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:10:11,636 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:10:15,382 INFO L227 lantSequenceWeakener]: Weakened 70 states. On average, predicates are now at 77.71% of their original sizes. [2018-10-27 00:10:15,383 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:12:27,787 INFO L415 sIntCurrentIteration]: We unified 327 AI predicates to 327 [2018-10-27 00:12:27,788 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:12:27,788 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:12:27,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [5] total 21 [2018-10-27 00:12:27,788 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:12:27,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 00:12:27,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 00:12:27,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-10-27 00:12:27,790 INFO L87 Difference]: Start difference. First operand 12549 states and 17866 transitions. Second operand 18 states. Received shutdown request... [2018-10-27 00:12:33,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 00:12:33,002 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 00:12:33,007 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 00:12:33,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:12:33 BoogieIcfgContainer [2018-10-27 00:12:33,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:12:33,009 INFO L168 Benchmark]: Toolchain (without parser) took 244529.70 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 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 287.4 MB. Max. memory is 7.1 GB. [2018-10-27 00:12:33,010 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-27 00:12:33,011 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1177.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-27 00:12:33,011 INFO L168 Benchmark]: Boogie Procedure Inliner took 350.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -862.0 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-27 00:12:33,012 INFO L168 Benchmark]: Boogie Preprocessor took 182.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-27 00:12:33,013 INFO L168 Benchmark]: RCFGBuilder took 6268.35 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 254.9 MB). Peak memory consumption was 254.9 MB. Max. memory is 7.1 GB. [2018-10-27 00:12:33,014 INFO L168 Benchmark]: TraceAbstraction took 236545.38 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.5 GB). Free memory was 1.9 GB in the beginning and 3.3 GB in the end (delta: -1.4 GB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-27 00:12:33,019 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 1177.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 350.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -862.0 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 182.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6268.35 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 254.9 MB). Peak memory consumption was 254.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 236545.38 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.5 GB). Free memory was 1.9 GB in the beginning and 3.3 GB in the end (delta: -1.4 GB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 28]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 28). Cancelled while BasicCegarLoop was constructing difference of abstraction (12549states) and FLOYD_HOARE automaton (currently 9 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 236.4s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 65.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 935 SDtfs, 8108 SDslu, 647 SDs, 0 SdLazy, 11660 SolverSat, 3297 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 41.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 612 GetRequests, 355 SyntacticMatches, 201 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 134.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12549occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 27.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9956515292175976 AbsIntWeakeningRatio, 0.10320284697508897 AbsIntAvgWeakeningVarsNumRemoved, 391.01779359430606 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 85 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1036 NumberOfCodeBlocks, 1036 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1029 ConstructedInterpolants, 0 QuantifiedInterpolants, 654676 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 148/371 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown