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/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label48_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:56:56,501 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:56:56,503 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:56:56,517 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:56:56,518 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:56:56,519 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:56:56,520 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:56:56,522 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:56:56,523 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:56:56,524 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:56:56,525 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:56:56,525 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:56:56,526 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:56:56,527 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:56:56,528 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:56:56,529 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:56:56,530 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:56:56,532 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:56:56,534 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:56:56,535 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:56:56,537 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:56:56,538 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:56:56,540 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:56:56,541 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:56:56,541 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:56:56,542 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:56:56,543 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:56:56,544 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:56:56,544 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:56:56,546 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:56:56,546 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:56:56,546 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 21:56:56,547 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 21:56:56,547 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 21:56:56,548 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 21:56:56,549 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 21:56:56,549 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 21:56:56,566 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:56:56,567 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:56:56,568 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:56:56,568 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:56:56,568 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:56:56,569 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:56:56,570 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 21:56:56,570 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:56:56,570 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:56:56,570 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:56:56,570 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:56:56,571 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:56:56,571 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:56:56,571 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:56:56,571 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:56:56,571 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:56:56,572 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:56:56,572 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:56:56,572 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:56:56,573 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:56:56,573 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:56:56,573 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:56:56,573 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:56:56,573 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 21:56:56,574 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:56:56,574 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:56:56,574 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:56:56,574 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 21:56:56,636 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:56:56,648 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:56:56,652 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:56:56,653 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:56:56,654 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:56:56,655 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label48_true-unreach-call.c [2018-10-26 21:56:56,715 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fcc8e5b16/2dca8ae0b93f4a3aba4594b2e6adf2bc/FLAG59cd53271 [2018-10-26 21:56:57,454 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:56:57,455 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label48_true-unreach-call.c [2018-10-26 21:56:57,482 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fcc8e5b16/2dca8ae0b93f4a3aba4594b2e6adf2bc/FLAG59cd53271 [2018-10-26 21:56:57,505 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fcc8e5b16/2dca8ae0b93f4a3aba4594b2e6adf2bc [2018-10-26 21:56:57,518 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:56:57,520 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 21:56:57,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:56:57,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:56:57,529 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:56:57,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:56:57" (1/1) ... [2018-10-26 21:56:57,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@639b200f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:57, skipping insertion in model container [2018-10-26 21:56:57,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:56:57" (1/1) ... [2018-10-26 21:56:57,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:56:57,672 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:56:58,743 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:56:58,748 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:56:59,321 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:56:59,344 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:56:59,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:59 WrapperNode [2018-10-26 21:56:59,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:56:59,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:56:59,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:56:59,347 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:56:59,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:59" (1/1) ... [2018-10-26 21:56:59,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:59" (1/1) ... [2018-10-26 21:56:59,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:56:59,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:56:59,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:56:59,894 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:56:59,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:59" (1/1) ... [2018-10-26 21:56:59,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:59" (1/1) ... [2018-10-26 21:56:59,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:59" (1/1) ... [2018-10-26 21:56:59,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:59" (1/1) ... [2018-10-26 21:57:00,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:59" (1/1) ... [2018-10-26 21:57:00,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:59" (1/1) ... [2018-10-26 21:57:00,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:59" (1/1) ... [2018-10-26 21:57:00,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:57:00,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:57:00,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:57:00,260 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:57:00,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:59" (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 [2018-10-26 21:57:00,330 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 21:57:00,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:57:00,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:57:10,423 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:57:10,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:57:10 BoogieIcfgContainer [2018-10-26 21:57:10,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:57:10,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:57:10,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:57:10,429 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:57:10,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:56:57" (1/3) ... [2018-10-26 21:57:10,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76954d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:57:10, skipping insertion in model container [2018-10-26 21:57:10,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:56:59" (2/3) ... [2018-10-26 21:57:10,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76954d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:57:10, skipping insertion in model container [2018-10-26 21:57:10,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:57:10" (3/3) ... [2018-10-26 21:57:10,433 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label48_true-unreach-call.c [2018-10-26 21:57:10,444 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:57:10,453 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:57:10,471 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:57:10,513 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:57:10,514 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:57:10,514 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:57:10,514 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:57:10,515 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:57:10,515 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:57:10,515 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:57:10,515 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:57:10,515 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:57:10,546 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-26 21:57:10,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-26 21:57:10,555 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:57:10,557 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:57:10,559 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:57:10,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:57:10,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1934902334, now seen corresponding path program 1 times [2018-10-26 21:57:10,568 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:57:10,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:57:10,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:57:10,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:57:10,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:57:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:57:11,026 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-26 21:57:11,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:57:11,049 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:57:11,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:57:11,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:57:11,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:57:11,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:57:11,075 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-26 21:57:21,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:57:21,519 INFO L93 Difference]: Finished difference Result 2102 states and 3914 transitions. [2018-10-26 21:57:21,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:57:21,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2018-10-26 21:57:21,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:57:21,556 INFO L225 Difference]: With dead ends: 2102 [2018-10-26 21:57:21,556 INFO L226 Difference]: Without dead ends: 1504 [2018-10-26 21:57:21,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:57:21,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2018-10-26 21:57:21,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1491. [2018-10-26 21:57:21,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1491 states. [2018-10-26 21:57:21,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 2416 transitions. [2018-10-26 21:57:21,695 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 2416 transitions. Word has length 44 [2018-10-26 21:57:21,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:57:21,696 INFO L481 AbstractCegarLoop]: Abstraction has 1491 states and 2416 transitions. [2018-10-26 21:57:21,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:57:21,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 2416 transitions. [2018-10-26 21:57:21,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-26 21:57:21,701 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:57:21,702 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:57:21,702 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:57:21,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:57:21,702 INFO L82 PathProgramCache]: Analyzing trace with hash -168526854, now seen corresponding path program 1 times [2018-10-26 21:57:21,703 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:57:21,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:57:21,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:57:21,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:57:21,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:57:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:57:21,957 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:57:21,957 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:57:21,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:57:21,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:57:21,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:57:21,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:57:21,960 INFO L87 Difference]: Start difference. First operand 1491 states and 2416 transitions. Second operand 4 states. [2018-10-26 21:57:31,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:57:31,295 INFO L93 Difference]: Finished difference Result 4268 states and 6993 transitions. [2018-10-26 21:57:31,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:57:31,296 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2018-10-26 21:57:31,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:57:31,312 INFO L225 Difference]: With dead ends: 4268 [2018-10-26 21:57:31,312 INFO L226 Difference]: Without dead ends: 2779 [2018-10-26 21:57:31,318 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:57:31,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2018-10-26 21:57:31,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 2779. [2018-10-26 21:57:31,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2779 states. [2018-10-26 21:57:31,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2779 states to 2779 states and 3841 transitions. [2018-10-26 21:57:31,380 INFO L78 Accepts]: Start accepts. Automaton has 2779 states and 3841 transitions. Word has length 112 [2018-10-26 21:57:31,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:57:31,381 INFO L481 AbstractCegarLoop]: Abstraction has 2779 states and 3841 transitions. [2018-10-26 21:57:31,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:57:31,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2779 states and 3841 transitions. [2018-10-26 21:57:31,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-26 21:57:31,392 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:57:31,392 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:57:31,392 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:57:31,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:57:31,393 INFO L82 PathProgramCache]: Analyzing trace with hash -72535569, now seen corresponding path program 1 times [2018-10-26 21:57:31,395 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:57:31,395 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:57:31,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:57:31,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:57:31,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:57:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:57:31,728 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:57:31,729 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:57:31,729 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:57:31,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:57:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:57:31,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:57:48,424 WARN L179 SmtUtils]: Spent 16.29 s on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2018-10-26 21:57:48,884 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:57:48,922 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:57:48,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-26 21:57:48,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 21:57:48,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 21:57:48,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:57:48,926 INFO L87 Difference]: Start difference. First operand 2779 states and 3841 transitions. Second operand 7 states. [2018-10-26 21:57:58,628 WARN L179 SmtUtils]: Spent 8.15 s on a formula simplification that was a NOOP. DAG size: 78 [2018-10-26 21:58:08,273 WARN L179 SmtUtils]: Spent 8.05 s on a formula simplification that was a NOOP. DAG size: 77 Received shutdown request... [2018-10-26 22:01:25,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-26 22:01:25,808 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 22:01:25,814 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 22:01:25,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:01:25 BoogieIcfgContainer [2018-10-26 22:01:25,814 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:01:25,815 INFO L168 Benchmark]: Toolchain (without parser) took 268296.65 ms. Allocated memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: 1.2 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 105.5 MB. Max. memory is 7.1 GB. [2018-10-26 22:01:25,816 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-10-26 22:01:25,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1821.86 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-26 22:01:25,819 INFO L168 Benchmark]: Boogie Procedure Inliner took 547.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -897.4 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. [2018-10-26 22:01:25,821 INFO L168 Benchmark]: Boogie Preprocessor took 365.94 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2018-10-26 22:01:25,822 INFO L168 Benchmark]: RCFGBuilder took 10164.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 493.3 MB). Peak memory consumption was 493.3 MB. Max. memory is 7.1 GB. [2018-10-26 22:01:25,823 INFO L168 Benchmark]: TraceAbstraction took 255388.65 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 459.8 MB). Free memory was 1.6 GB in the beginning and 2.5 GB in the end (delta: -881.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 22:01:25,833 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 1821.86 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 547.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -897.4 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 365.94 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10164.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 493.3 MB). Peak memory consumption was 493.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 255388.65 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 459.8 MB). Free memory was 1.6 GB in the beginning and 2.5 GB in the end (delta: -881.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 137]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 137). Cancelled while BasicCegarLoop was constructing difference of abstraction (2779states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (14436 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 255.3s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 236.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1187 SDtfs, 6364 SDslu, 831 SDs, 0 SdLazy, 10364 SolverSat, 3485 SolverUnsat, 86 SolverUnknown, 0 SolverNotchecked, 215.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 33.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2779occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 13 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 17.7s InterpolantComputationTime, 386 NumberOfCodeBlocks, 386 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 382 ConstructedInterpolants, 42 QuantifiedInterpolants, 894454 SizeOfPredicates, 1 NumberOfNonLiveVariables, 177 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 82/123 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown