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_label21_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:44:37,180 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:44:37,182 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:44:37,195 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:44:37,195 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:44:37,197 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:44:37,198 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:44:37,200 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:44:37,201 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:44:37,202 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:44:37,203 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:44:37,203 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:44:37,204 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:44:37,205 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:44:37,206 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:44:37,207 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:44:37,208 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:44:37,210 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:44:37,212 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:44:37,214 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:44:37,215 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:44:37,216 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:44:37,219 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 20:44:37,232 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 [2018-10-23 20:44:37,263 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:44:37,264 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:44:37,264 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:44:37,265 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:44:37,265 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:44:37,265 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:44:37,266 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:44:37,266 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:44:37,266 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:44:37,266 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:44:37,266 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:44:37,267 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:44:37,267 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:44:37,267 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:44:37,267 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:44:37,268 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:44:37,268 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:44:37,268 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:44:37,268 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:44:37,268 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:44:37,269 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:44:37,270 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:44:37,270 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:44:37,270 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:44:37,271 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:44:37,271 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:44:37,271 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:44:37,271 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:44:37,323 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:44:37,336 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:44:37,340 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:44:37,341 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:44:37,342 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:44:37,343 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label21_true-unreach-call.c [2018-10-23 20:44:37,399 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ecb6edf73/e3910f59540e43d7995144ccb25dad3f/FLAGe0d86cf34 [2018-10-23 20:44:38,159 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:44:38,160 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label21_true-unreach-call.c [2018-10-23 20:44:38,195 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ecb6edf73/e3910f59540e43d7995144ccb25dad3f/FLAGe0d86cf34 [2018-10-23 20:44:38,214 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ecb6edf73/e3910f59540e43d7995144ccb25dad3f [2018-10-23 20:44:38,225 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:44:38,227 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:44:38,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:44:38,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:44:38,235 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:44:38,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:44:38" (1/1) ... [2018-10-23 20:44:38,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a99fc8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:38, skipping insertion in model container [2018-10-23 20:44:38,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:44:38" (1/1) ... [2018-10-23 20:44:38,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:44:38,387 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:44:39,473 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:44:39,478 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:44:39,840 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:44:39,865 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:44:39,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:39 WrapperNode [2018-10-23 20:44:39,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:44:39,867 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:44:39,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:44:39,868 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:44:39,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:39" (1/1) ... [2018-10-23 20:44:39,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:39" (1/1) ... [2018-10-23 20:44:40,488 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:44:40,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:44:40,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:44:40,489 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:44:40,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:39" (1/1) ... [2018-10-23 20:44:40,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:39" (1/1) ... [2018-10-23 20:44:40,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:39" (1/1) ... [2018-10-23 20:44:40,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:39" (1/1) ... [2018-10-23 20:44:40,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:39" (1/1) ... [2018-10-23 20:44:40,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:39" (1/1) ... [2018-10-23 20:44:40,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:39" (1/1) ... [2018-10-23 20:44:40,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:44:40,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:44:40,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:44:40,759 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:44:40,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:39" (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 [2018-10-23 20:44:40,821 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:44:40,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:44:40,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:44:49,277 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:44:49,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:44:49 BoogieIcfgContainer [2018-10-23 20:44:49,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:44:49,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:44:49,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:44:49,284 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:44:49,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:44:38" (1/3) ... [2018-10-23 20:44:49,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bbb51ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:44:49, skipping insertion in model container [2018-10-23 20:44:49,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:44:39" (2/3) ... [2018-10-23 20:44:49,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bbb51ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:44:49, skipping insertion in model container [2018-10-23 20:44:49,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:44:49" (3/3) ... [2018-10-23 20:44:49,288 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label21_true-unreach-call.c [2018-10-23 20:44:49,300 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:44:49,317 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:44:49,333 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:44:49,377 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:44:49,378 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:44:49,378 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:44:49,378 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:44:49,378 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:44:49,379 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:44:49,379 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:44:49,379 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:44:49,379 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:44:49,412 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-23 20:44:49,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-23 20:44:49,423 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:44:49,424 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:44:49,426 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:44:49,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:44:49,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1074201598, now seen corresponding path program 1 times [2018-10-23 20:44:49,433 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:44:49,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:44:49,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:44:49,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:44:49,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:44:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:44:49,963 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-23 20:44:49,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:44:49,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:44:49,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:44:49,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:44:50,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:44:50,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:44:50,007 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-23 20:45:00,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:45:00,250 INFO L93 Difference]: Finished difference Result 2093 states and 3901 transitions. [2018-10-23 20:45:00,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:45:00,252 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-10-23 20:45:00,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:45:00,288 INFO L225 Difference]: With dead ends: 2093 [2018-10-23 20:45:00,288 INFO L226 Difference]: Without dead ends: 1495 [2018-10-23 20:45:00,296 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 [2018-10-23 20:45:00,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2018-10-23 20:45:00,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1488. [2018-10-23 20:45:00,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2018-10-23 20:45:00,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2247 transitions. [2018-10-23 20:45:00,456 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2247 transitions. Word has length 60 [2018-10-23 20:45:00,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:45:00,458 INFO L481 AbstractCegarLoop]: Abstraction has 1488 states and 2247 transitions. [2018-10-23 20:45:00,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:45:00,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2247 transitions. [2018-10-23 20:45:00,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-23 20:45:00,468 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:45:00,468 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:45:00,468 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:45:00,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:45:00,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1105885487, now seen corresponding path program 1 times [2018-10-23 20:45:00,469 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:45:00,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:45:00,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:45:00,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:45:00,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:45:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:45:00,871 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:45:00,871 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:45:00,872 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 [2018-10-23 20:45:00,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:45:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:45:00,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:45:17,544 WARN L179 SmtUtils]: Spent 16.30 s on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2018-10-23 20:45:18,115 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:45:18,148 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:45:18,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-23 20:45:18,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:45:18,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:45:18,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:45:18,153 INFO L87 Difference]: Start difference. First operand 1488 states and 2247 transitions. Second operand 7 states. [2018-10-23 20:45:26,984 WARN L179 SmtUtils]: Spent 8.08 s on a formula simplification that was a NOOP. DAG size: 78 [2018-10-23 20:45:44,623 WARN L179 SmtUtils]: Spent 8.05 s on a formula simplification that was a NOOP. DAG size: 78 [2018-10-23 20:46:03,754 WARN L179 SmtUtils]: Spent 8.06 s on a formula simplification that was a NOOP. DAG size: 78 Received shutdown request... [2018-10-23 20:49:11,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-23 20:49:11,583 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:49:11,589 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:49:11,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:49:11 BoogieIcfgContainer [2018-10-23 20:49:11,590 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:49:11,591 INFO L168 Benchmark]: Toolchain (without parser) took 273364.84 ms. Allocated memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -447.6 MB). Peak memory consumption was 656.6 MB. Max. memory is 7.1 GB. [2018-10-23 20:49:11,592 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. [2018-10-23 20:49:11,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1638.53 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. [2018-10-23 20:49:11,593 INFO L168 Benchmark]: Boogie Procedure Inliner took 620.93 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 804.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -922.0 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-10-23 20:49:11,594 INFO L168 Benchmark]: Boogie Preprocessor took 269.95 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 43.8 MB). Peak memory consumption was 43.8 MB. Max. memory is 7.1 GB. [2018-10-23 20:49:11,595 INFO L168 Benchmark]: RCFGBuilder took 8520.18 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 481.8 MB). Peak memory consumption was 481.8 MB. Max. memory is 7.1 GB. [2018-10-23 20:49:11,599 INFO L168 Benchmark]: TraceAbstraction took 262309.83 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 299.9 MB). Free memory was 1.7 GB in the beginning and 1.9 GB in the end (delta: -188.6 MB). Peak memory consumption was 111.3 MB. Max. memory is 7.1 GB. [2018-10-23 20:49:11,606 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 1638.53 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 620.93 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 804.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -922.0 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 269.95 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 43.8 MB). Peak memory consumption was 43.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8520.18 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 481.8 MB). Peak memory consumption was 481.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 262309.83 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 299.9 MB). Free memory was 1.7 GB in the beginning and 1.9 GB in the end (delta: -188.6 MB). Peak memory consumption was 111.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 185]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 185). Cancelled while BasicCegarLoop was constructing difference of abstraction (1488states) and FLOYD_HOARE automaton (currently 13 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (6545 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 262.2s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 243.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 715 SDtfs, 4908 SDslu, 691 SDs, 0 SdLazy, 9124 SolverSat, 2531 SolverUnsat, 89 SolverUnknown, 0 SolverNotchecked, 215.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 41.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1488occurred in iteration=1, 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, 1 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.8s InterpolantComputationTime, 322 NumberOfCodeBlocks, 322 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 319 ConstructedInterpolants, 58 QuantifiedInterpolants, 1339445 SizeOfPredicates, 1 NumberOfNonLiveVariables, 195 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 57/114 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown