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_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:52:58,177 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:52:58,179 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:52:58,192 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:52:58,192 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:52:58,193 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:52:58,195 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:52:58,196 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:52:58,198 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:52:58,199 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:52:58,200 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:52:58,200 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:52:58,202 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:52:58,203 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:52:58,204 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:52:58,205 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:52:58,206 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:52:58,207 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:52:58,209 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:52:58,214 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:52:58,216 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:52:58,217 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:52:58,219 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 16:52:58,227 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 [2018-10-24 16:52:58,241 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:52:58,242 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:52:58,243 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:52:58,243 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:52:58,243 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:52:58,244 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:52:58,244 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:52:58,244 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:52:58,244 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:52:58,245 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:52:58,245 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:52:58,245 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:52:58,245 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:52:58,245 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:52:58,246 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:52:58,246 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:52:58,246 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:52:58,246 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:52:58,246 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:52:58,247 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:52:58,247 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:52:58,247 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:52:58,247 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:52:58,247 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:52:58,248 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:52:58,248 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:52:58,248 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:52:58,248 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:52:58,293 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:52:58,307 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:52:58,311 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:52:58,312 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:52:58,313 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:52:58,313 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label56_true-unreach-call.c [2018-10-24 16:52:58,373 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3666af262/54ed7e8831de46d69e43be410b4f8394/FLAG79b8fa51c [2018-10-24 16:52:59,107 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:52:59,108 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label56_true-unreach-call.c [2018-10-24 16:52:59,130 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3666af262/54ed7e8831de46d69e43be410b4f8394/FLAG79b8fa51c [2018-10-24 16:52:59,151 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3666af262/54ed7e8831de46d69e43be410b4f8394 [2018-10-24 16:52:59,164 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:52:59,166 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:52:59,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:52:59,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:52:59,172 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:52:59,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:52:59" (1/1) ... [2018-10-24 16:52:59,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ba4e0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:52:59, skipping insertion in model container [2018-10-24 16:52:59,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:52:59" (1/1) ... [2018-10-24 16:52:59,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:52:59,304 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:53:00,288 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:53:00,293 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:53:00,697 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:53:00,723 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:53:00,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:00 WrapperNode [2018-10-24 16:53:00,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:53:00,725 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:53:00,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:53:00,725 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:53:00,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:00" (1/1) ... [2018-10-24 16:53:00,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:00" (1/1) ... [2018-10-24 16:53:01,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:53:01,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:53:01,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:53:01,252 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:53:01,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:00" (1/1) ... [2018-10-24 16:53:01,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:00" (1/1) ... [2018-10-24 16:53:01,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:00" (1/1) ... [2018-10-24 16:53:01,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:00" (1/1) ... [2018-10-24 16:53:01,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:00" (1/1) ... [2018-10-24 16:53:01,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:00" (1/1) ... [2018-10-24 16:53:01,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:00" (1/1) ... [2018-10-24 16:53:01,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:53:01,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:53:01,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:53:01,544 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:53:01,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:53:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:53:01,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:53:01,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:53:10,365 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:53:10,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:53:10 BoogieIcfgContainer [2018-10-24 16:53:10,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:53:10,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:53:10,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:53:10,371 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:53:10,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:52:59" (1/3) ... [2018-10-24 16:53:10,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d3ab5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:53:10, skipping insertion in model container [2018-10-24 16:53:10,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:53:00" (2/3) ... [2018-10-24 16:53:10,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d3ab5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:53:10, skipping insertion in model container [2018-10-24 16:53:10,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:53:10" (3/3) ... [2018-10-24 16:53:10,375 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label56_true-unreach-call.c [2018-10-24 16:53:10,385 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:53:10,396 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:53:10,414 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:53:10,459 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:53:10,460 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:53:10,460 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:53:10,461 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:53:10,461 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:53:10,461 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:53:10,461 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:53:10,461 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:53:10,461 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:53:10,493 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-24 16:53:10,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-24 16:53:10,505 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:53:10,506 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, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:53:10,509 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:53:10,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:53:10,516 INFO L82 PathProgramCache]: Analyzing trace with hash -757100326, now seen corresponding path program 1 times [2018-10-24 16:53:10,518 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:53:10,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:53:10,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:53:10,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:53:10,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:53:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:53:11,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:53:11,092 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:53:11,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:53:11,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:53:11,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:53:11,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:53:11,116 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-24 16:53:20,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:53:20,959 INFO L93 Difference]: Finished difference Result 2085 states and 3898 transitions. [2018-10-24 16:53:20,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:53:20,962 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2018-10-24 16:53:20,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:53:20,996 INFO L225 Difference]: With dead ends: 2085 [2018-10-24 16:53:20,996 INFO L226 Difference]: Without dead ends: 1487 [2018-10-24 16:53:21,004 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:53:21,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2018-10-24 16:53:21,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1023. [2018-10-24 16:53:21,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-10-24 16:53:21,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1623 transitions. [2018-10-24 16:53:21,148 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1623 transitions. Word has length 67 [2018-10-24 16:53:21,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:53:21,149 INFO L481 AbstractCegarLoop]: Abstraction has 1023 states and 1623 transitions. [2018-10-24 16:53:21,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:53:21,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1623 transitions. [2018-10-24 16:53:21,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-24 16:53:21,166 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:53:21,167 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:53:21,167 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:53:21,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:53:21,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1868985281, now seen corresponding path program 1 times [2018-10-24 16:53:21,171 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:53:21,171 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:53:21,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:53:21,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:53:21,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:53:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:53:21,474 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:53:21,475 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:53:21,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:53:21,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:53:21,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:53:21,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:53:21,478 INFO L87 Difference]: Start difference. First operand 1023 states and 1623 transitions. Second operand 4 states. [2018-10-24 16:53:30,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:53:30,059 INFO L93 Difference]: Finished difference Result 2908 states and 4662 transitions. [2018-10-24 16:53:30,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:53:30,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2018-10-24 16:53:30,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:53:30,072 INFO L225 Difference]: With dead ends: 2908 [2018-10-24 16:53:30,072 INFO L226 Difference]: Without dead ends: 1887 [2018-10-24 16:53:30,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:53:30,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2018-10-24 16:53:30,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1887. [2018-10-24 16:53:30,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2018-10-24 16:53:30,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2573 transitions. [2018-10-24 16:53:30,123 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2573 transitions. Word has length 135 [2018-10-24 16:53:30,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:53:30,123 INFO L481 AbstractCegarLoop]: Abstraction has 1887 states and 2573 transitions. [2018-10-24 16:53:30,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:53:30,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2573 transitions. [2018-10-24 16:53:30,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-24 16:53:30,126 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:53:30,126 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:53:30,127 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:53:30,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:53:30,127 INFO L82 PathProgramCache]: Analyzing trace with hash 371846542, now seen corresponding path program 1 times [2018-10-24 16:53:30,127 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:53:30,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:53:30,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:53:30,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:53:30,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:53:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:53:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:53:30,449 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:53:30,449 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 [2018-10-24 16:53:30,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:53:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:53:30,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:53:47,024 WARN L179 SmtUtils]: Spent 16.20 s on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2018-10-24 16:53:47,662 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:53:47,682 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:53:47,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 16:53:47,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:53:47,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:53:47,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:53:47,684 INFO L87 Difference]: Start difference. First operand 1887 states and 2573 transitions. Second operand 7 states. [2018-10-24 16:53:57,949 WARN L179 SmtUtils]: Spent 8.08 s on a formula simplification that was a NOOP. DAG size: 78 [2018-10-24 16:54:07,504 WARN L179 SmtUtils]: Spent 8.05 s on a formula simplification that was a NOOP. DAG size: 77 Received shutdown request... [2018-10-24 16:57:32,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 16:57:32,142 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:57:32,148 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:57:32,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:57:32 BoogieIcfgContainer [2018-10-24 16:57:32,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:57:32,149 INFO L168 Benchmark]: Toolchain (without parser) took 272984.25 ms. Allocated memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: 1.3 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 93.3 MB. Max. memory is 7.1 GB. [2018-10-24 16:57:32,150 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:57:32,151 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1557.21 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. [2018-10-24 16:57:32,152 INFO L168 Benchmark]: Boogie Procedure Inliner took 526.98 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 810.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -933.6 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:57:32,153 INFO L168 Benchmark]: Boogie Preprocessor took 291.60 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: 41.2 MB). Peak memory consumption was 41.2 MB. Max. memory is 7.1 GB. [2018-10-24 16:57:32,153 INFO L168 Benchmark]: RCFGBuilder took 8822.39 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: 470.5 MB). Peak memory consumption was 470.5 MB. Max. memory is 7.1 GB. [2018-10-24 16:57:32,154 INFO L168 Benchmark]: TraceAbstraction took 261781.21 ms. Allocated memory was 2.4 GB in the beginning and 2.8 GB in the end (delta: 453.0 MB). Free memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: -885.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:57:32,159 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 1557.21 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 526.98 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 810.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -933.6 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 291.60 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: 41.2 MB). Peak memory consumption was 41.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8822.39 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: 470.5 MB). Peak memory consumption was 470.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 261781.21 ms. Allocated memory was 2.4 GB in the beginning and 2.8 GB in the end (delta: 453.0 MB). Free memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: -885.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 206]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 206). Cancelled while BasicCegarLoop was constructing difference of abstraction (1887states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (9732 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 261.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 242.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1226 SDtfs, 5683 SDslu, 860 SDs, 0 SdLazy, 9712 SolverSat, 3090 SolverUnsat, 91 SolverUnknown, 0 SolverNotchecked, 222.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 33.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1887occurred 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, 464 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 17.9s InterpolantComputationTime, 478 NumberOfCodeBlocks, 478 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 474 ConstructedInterpolants, 65 QuantifiedInterpolants, 1599220 SizeOfPredicates, 1 NumberOfNonLiveVariables, 201 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 128/192 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown