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_label08_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:44:31,249 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:44:31,251 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:44:31,263 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:44:31,264 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:44:31,267 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:44:31,268 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:44:31,271 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:44:31,274 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:44:31,277 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:44:31,278 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:44:31,278 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:44:31,282 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:44:31,283 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:44:31,284 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:44:31,285 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:44:31,291 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:44:31,292 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:44:31,297 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:44:31,301 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:44:31,302 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:44:31,303 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:44:31,308 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 16:44:31,318 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 16:44:31,332 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:44:31,332 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:44:31,333 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:44:31,333 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:44:31,334 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:44:31,334 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:44:31,334 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:44:31,334 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:44:31,335 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:44:31,335 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:44:31,335 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:44:31,335 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:44:31,335 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:44:31,335 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:44:31,336 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:44:31,336 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:44:31,336 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:44:31,336 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:44:31,336 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:44:31,337 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:44:31,337 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:44:31,337 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:44:31,337 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:44:31,337 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:44:31,338 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:44:31,338 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:44:31,338 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:44:31,338 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:44:31,382 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:44:31,395 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:44:31,398 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:44:31,400 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:44:31,401 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:44:31,401 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label08_true-unreach-call.c [2018-10-24 16:44:31,460 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d5cfb8299/34775debd11e4c089a9e6cafec111782/FLAGf2034095d [2018-10-24 16:44:32,212 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:44:32,213 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label08_true-unreach-call.c [2018-10-24 16:44:32,251 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d5cfb8299/34775debd11e4c089a9e6cafec111782/FLAGf2034095d [2018-10-24 16:44:32,271 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d5cfb8299/34775debd11e4c089a9e6cafec111782 [2018-10-24 16:44:32,284 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:44:32,286 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:44:32,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:44:32,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:44:32,294 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:44:32,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:44:32" (1/1) ... [2018-10-24 16:44:32,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b692d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:32, skipping insertion in model container [2018-10-24 16:44:32,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:44:32" (1/1) ... [2018-10-24 16:44:32,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:44:32,422 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:44:33,453 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:44:33,458 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:44:33,868 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:44:33,894 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:44:33,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:33 WrapperNode [2018-10-24 16:44:33,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:44:33,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:44:33,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:44:33,897 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:44:33,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:33" (1/1) ... [2018-10-24 16:44:33,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:33" (1/1) ... [2018-10-24 16:44:34,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:44:34,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:44:34,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:44:34,476 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:44:34,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:33" (1/1) ... [2018-10-24 16:44:34,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:33" (1/1) ... [2018-10-24 16:44:34,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:33" (1/1) ... [2018-10-24 16:44:34,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:33" (1/1) ... [2018-10-24 16:44:34,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:33" (1/1) ... [2018-10-24 16:44:34,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:33" (1/1) ... [2018-10-24 16:44:34,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:33" (1/1) ... [2018-10-24 16:44:34,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:44:34,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:44:34,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:44:34,789 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:44:34,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:33" (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 16:44:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:44:34,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:44:34,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:44:43,992 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:44:43,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:44:43 BoogieIcfgContainer [2018-10-24 16:44:43,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:44:43,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:44:43,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:44:43,997 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:44:43,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:44:32" (1/3) ... [2018-10-24 16:44:43,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf5f2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:44:43, skipping insertion in model container [2018-10-24 16:44:43,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:44:33" (2/3) ... [2018-10-24 16:44:43,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf5f2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:44:43, skipping insertion in model container [2018-10-24 16:44:44,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:44:43" (3/3) ... [2018-10-24 16:44:44,002 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label08_true-unreach-call.c [2018-10-24 16:44:44,012 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:44:44,023 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:44:44,041 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:44:44,088 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:44:44,089 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:44:44,089 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:44:44,089 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:44:44,090 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:44:44,090 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:44:44,090 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:44:44,090 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:44:44,090 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:44:44,123 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-24 16:44:44,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-24 16:44:44,134 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:44:44,135 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] [2018-10-24 16:44:44,137 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:44:44,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:44:44,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1281577798, now seen corresponding path program 1 times [2018-10-24 16:44:44,147 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:44:44,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:44:44,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:44:44,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:44:44,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:44:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:44:44,674 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 16:44:44,677 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:44:44,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:44:44,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:44:44,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:44:44,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:44:44,702 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-24 16:44:57,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:44:57,772 INFO L93 Difference]: Finished difference Result 2085 states and 3898 transitions. [2018-10-24 16:44:57,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:44:57,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-10-24 16:44:57,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:44:57,810 INFO L225 Difference]: With dead ends: 2085 [2018-10-24 16:44:57,810 INFO L226 Difference]: Without dead ends: 1487 [2018-10-24 16:44:57,818 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 16:44:57,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2018-10-24 16:44:57,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1023. [2018-10-24 16:44:57,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-10-24 16:44:57,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1623 transitions. [2018-10-24 16:44:57,955 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1623 transitions. Word has length 59 [2018-10-24 16:44:57,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:44:57,956 INFO L481 AbstractCegarLoop]: Abstraction has 1023 states and 1623 transitions. [2018-10-24 16:44:57,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:44:57,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1623 transitions. [2018-10-24 16:44:57,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-24 16:44:57,962 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:44:57,962 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:44:57,962 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:44:57,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:44:57,963 INFO L82 PathProgramCache]: Analyzing trace with hash -580036831, now seen corresponding path program 1 times [2018-10-24 16:44:57,963 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:44:57,963 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:44:57,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:44:57,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:44:57,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:44:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:44:58,226 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:44:58,227 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:44:58,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:44:58,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:44:58,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:44:58,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:44:58,230 INFO L87 Difference]: Start difference. First operand 1023 states and 1623 transitions. Second operand 4 states. [2018-10-24 16:45:05,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:45:05,662 INFO L93 Difference]: Finished difference Result 2908 states and 4662 transitions. [2018-10-24 16:45:05,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:45:05,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2018-10-24 16:45:05,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:45:05,674 INFO L225 Difference]: With dead ends: 2908 [2018-10-24 16:45:05,674 INFO L226 Difference]: Without dead ends: 1887 [2018-10-24 16:45:05,682 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 16:45:05,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2018-10-24 16:45:05,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1887. [2018-10-24 16:45:05,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2018-10-24 16:45:05,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2573 transitions. [2018-10-24 16:45:05,734 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2573 transitions. Word has length 127 [2018-10-24 16:45:05,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:45:05,734 INFO L481 AbstractCegarLoop]: Abstraction has 1887 states and 2573 transitions. [2018-10-24 16:45:05,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:45:05,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2573 transitions. [2018-10-24 16:45:05,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-24 16:45:05,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:45:05,738 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:45:05,739 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:45:05,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:45:05,739 INFO L82 PathProgramCache]: Analyzing trace with hash -919847698, now seen corresponding path program 1 times [2018-10-24 16:45:05,739 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:45:05,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:45:05,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:45:05,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:45:05,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:45:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:45:06,035 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:45:06,035 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:45:06,035 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 16:45:06,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:45:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:45:06,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:45:22,717 WARN L179 SmtUtils]: Spent 16.26 s on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2018-10-24 16:45:23,338 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:45:23,374 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:45:23,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 16:45:23,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:45:23,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:45:23,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:45:23,378 INFO L87 Difference]: Start difference. First operand 1887 states and 2573 transitions. Second operand 7 states. [2018-10-24 16:45:33,521 WARN L179 SmtUtils]: Spent 8.07 s on a formula simplification that was a NOOP. DAG size: 78 [2018-10-24 16:45:58,557 WARN L179 SmtUtils]: Spent 8.05 s on a formula simplification that was a NOOP. DAG size: 78 Received shutdown request... [2018-10-24 16:49:01,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 16:49:01,156 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:49:01,161 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:49:01,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:49:01 BoogieIcfgContainer [2018-10-24 16:49:01,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:49:01,163 INFO L168 Benchmark]: Toolchain (without parser) took 268878.28 ms. Allocated memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: 1.2 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 20.0 MB. Max. memory is 7.1 GB. [2018-10-24 16:49:01,164 INFO L168 Benchmark]: CDTParser took 0.27 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 16:49:01,164 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1606.26 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 16:49:01,166 INFO L168 Benchmark]: Boogie Procedure Inliner took 578.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -925.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:49:01,168 INFO L168 Benchmark]: Boogie Preprocessor took 313.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2018-10-24 16:49:01,169 INFO L168 Benchmark]: RCFGBuilder took 9203.94 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 477.7 MB). Peak memory consumption was 477.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:49:01,170 INFO L168 Benchmark]: TraceAbstraction took 257168.19 ms. Allocated memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: 445.1 MB). Free memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: -943.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:49:01,175 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 1606.26 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 578.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -925.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 313.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9203.94 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 477.7 MB). Peak memory consumption was 477.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 257168.19 ms. Allocated memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: 445.1 MB). Free memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: -943.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 182]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 182). 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 (7726 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 257.0s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 238.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1245 SDtfs, 4683 SDslu, 890 SDs, 0 SdLazy, 10749 SolverSat, 2676 SolverUnsat, 89 SolverUnknown, 0 SolverNotchecked, 217.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 144 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 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, 0.1s SatisfiabilityAnalysisTime, 17.9s InterpolantComputationTime, 446 NumberOfCodeBlocks, 446 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 442 ConstructedInterpolants, 57 QuantifiedInterpolants, 1383976 SizeOfPredicates, 1 NumberOfNonLiveVariables, 193 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 112/168 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown