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-d380424 [2018-10-24 16:48:12,943 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:48:12,945 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:48:12,957 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:48:12,958 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:48:12,959 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:48:12,960 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:48:12,962 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:48:12,964 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:48:12,965 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:48:12,966 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:48:12,966 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:48:12,967 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:48:12,968 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:48:12,969 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:48:12,970 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:48:12,971 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:48:12,973 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:48:12,975 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:48:12,976 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:48:12,977 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:48:12,979 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:48:12,984 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 16:48:13,000 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 16:48:13,002 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 16:48:13,003 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 16:48:13,004 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 16:48:13,004 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 16:48:13,032 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:48:13,032 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:48:13,034 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:48:13,034 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:48:13,034 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:48:13,036 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:48:13,036 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:48:13,036 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:48:13,036 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:48:13,036 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:48:13,037 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:48:13,037 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:48:13,037 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:48:13,037 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:48:13,037 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:48:13,038 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:48:13,038 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:48:13,038 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:48:13,039 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:48:13,039 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:48:13,039 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:48:13,039 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:48:13,039 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:48:13,040 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:48:13,040 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:48:13,040 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:48:13,040 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:48:13,040 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:48:13,090 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:48:13,106 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:48:13,109 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:48:13,111 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:48:13,111 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:48:13,112 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label21_true-unreach-call.c [2018-10-24 16:48:13,171 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8237dcfa3/7b6ce03bd1684be9ba49105c49f3acf6/FLAG7c9bae20e [2018-10-24 16:48:13,882 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:48:13,883 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label21_true-unreach-call.c [2018-10-24 16:48:13,907 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8237dcfa3/7b6ce03bd1684be9ba49105c49f3acf6/FLAG7c9bae20e [2018-10-24 16:48:13,926 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8237dcfa3/7b6ce03bd1684be9ba49105c49f3acf6 [2018-10-24 16:48:13,939 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:48:13,940 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:48:13,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:48:13,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:48:13,947 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:48:13,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:48:13" (1/1) ... [2018-10-24 16:48:13,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a6628d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:13, skipping insertion in model container [2018-10-24 16:48:13,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:48:13" (1/1) ... [2018-10-24 16:48:13,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:48:14,093 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:48:15,047 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:48:15,052 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:48:15,464 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:48:15,487 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:48:15,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:15 WrapperNode [2018-10-24 16:48:15,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:48:15,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:48:15,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:48:15,490 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:48:15,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:15" (1/1) ... [2018-10-24 16:48:15,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:15" (1/1) ... [2018-10-24 16:48:16,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:48:16,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:48:16,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:48:16,105 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:48:16,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:15" (1/1) ... [2018-10-24 16:48:16,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:15" (1/1) ... [2018-10-24 16:48:16,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:15" (1/1) ... [2018-10-24 16:48:16,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:15" (1/1) ... [2018-10-24 16:48:16,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:15" (1/1) ... [2018-10-24 16:48:16,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:15" (1/1) ... [2018-10-24 16:48:16,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:15" (1/1) ... [2018-10-24 16:48:16,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:48:16,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:48:16,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:48:16,379 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:48:16,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:15" (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 16:48:16,434 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:48:16,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:48:16,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:48:25,963 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:48:25,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:48:25 BoogieIcfgContainer [2018-10-24 16:48:25,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:48:25,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:48:25,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:48:25,969 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:48:25,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:48:13" (1/3) ... [2018-10-24 16:48:25,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a96d687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:48:25, skipping insertion in model container [2018-10-24 16:48:25,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:48:15" (2/3) ... [2018-10-24 16:48:25,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a96d687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:48:25, skipping insertion in model container [2018-10-24 16:48:25,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:48:25" (3/3) ... [2018-10-24 16:48:25,974 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label21_true-unreach-call.c [2018-10-24 16:48:25,983 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:48:25,993 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:48:26,010 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:48:26,050 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:48:26,051 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:48:26,051 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:48:26,051 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:48:26,052 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:48:26,052 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:48:26,052 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:48:26,052 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:48:26,052 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:48:26,083 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-24 16:48:26,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-24 16:48:26,100 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:48:26,101 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] [2018-10-24 16:48:26,103 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:48:26,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:48:26,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1074201598, now seen corresponding path program 1 times [2018-10-24 16:48:26,111 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:48:26,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:48:26,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:48:26,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:48:26,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:48:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:48:26,610 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 16:48:26,638 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 16:48:26,641 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:48:26,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:48:26,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:48:26,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:48:26,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:48:26,670 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-24 16:48:36,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:48:36,880 INFO L93 Difference]: Finished difference Result 2093 states and 3901 transitions. [2018-10-24 16:48:36,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:48:36,883 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-10-24 16:48:36,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:48:36,913 INFO L225 Difference]: With dead ends: 2093 [2018-10-24 16:48:36,913 INFO L226 Difference]: Without dead ends: 1495 [2018-10-24 16:48:36,921 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 16:48:36,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2018-10-24 16:48:37,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1488. [2018-10-24 16:48:37,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2018-10-24 16:48:37,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2247 transitions. [2018-10-24 16:48:37,057 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2247 transitions. Word has length 60 [2018-10-24 16:48:37,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:48:37,058 INFO L481 AbstractCegarLoop]: Abstraction has 1488 states and 2247 transitions. [2018-10-24 16:48:37,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:48:37,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2247 transitions. [2018-10-24 16:48:37,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-24 16:48:37,067 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:48:37,067 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] [2018-10-24 16:48:37,068 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:48:37,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:48:37,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1105885487, now seen corresponding path program 1 times [2018-10-24 16:48:37,069 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:48:37,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:48:37,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:48:37,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:48:37,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:48:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:48:37,730 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:48:37,730 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:48:37,731 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 16:48:37,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:48:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:48:37,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:48:54,360 WARN L179 SmtUtils]: Spent 16.22 s on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2018-10-24 16:48:55,124 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:48:55,161 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:48:55,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 16:48:55,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:48:55,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:48:55,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:48:55,164 INFO L87 Difference]: Start difference. First operand 1488 states and 2247 transitions. Second operand 7 states. [2018-10-24 16:49:04,858 WARN L179 SmtUtils]: Spent 8.16 s on a formula simplification that was a NOOP. DAG size: 78 [2018-10-24 16:49:22,723 WARN L179 SmtUtils]: Spent 8.06 s on a formula simplification that was a NOOP. DAG size: 78 [2018-10-24 16:49:41,671 WARN L179 SmtUtils]: Spent 8.05 s on a formula simplification that was a NOOP. DAG size: 78 Received shutdown request... [2018-10-24 16:52:45,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 16:52:45,808 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:52:45,813 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:52:45,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:52:45 BoogieIcfgContainer [2018-10-24 16:52:45,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:52:45,814 INFO L168 Benchmark]: Toolchain (without parser) took 271874.50 ms. Allocated memory was 1.5 GB in the beginning and 2.6 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: -443.1 MB). Peak memory consumption was 656.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:52:45,815 INFO L168 Benchmark]: CDTParser took 0.24 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 16:52:45,816 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1547.02 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 16:52:45,816 INFO L168 Benchmark]: Boogie Procedure Inliner took 615.02 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 791.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -913.1 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:52:45,819 INFO L168 Benchmark]: Boogie Preprocessor took 273.27 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: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:52:45,822 INFO L168 Benchmark]: RCFGBuilder took 9586.56 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: 477.8 MB). Peak memory consumption was 477.8 MB. Max. memory is 7.1 GB. [2018-10-24 16:52:45,823 INFO L168 Benchmark]: TraceAbstraction took 259847.21 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 307.8 MB). Free memory was 1.7 GB in the beginning and 1.9 GB in the end (delta: -174.6 MB). Peak memory consumption was 133.2 MB. Max. memory is 7.1 GB. [2018-10-24 16:52:45,832 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1547.02 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 615.02 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 791.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -913.1 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 273.27 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: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9586.56 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: 477.8 MB). Peak memory consumption was 477.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 259847.21 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 307.8 MB). Free memory was 1.7 GB in the beginning and 1.9 GB in the end (delta: -174.6 MB). Peak memory consumption was 133.2 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 (6459 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 259.7s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 240.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 714 SDtfs, 4856 SDslu, 688 SDs, 0 SdLazy, 9058 SolverSat, 2514 SolverUnsat, 88 SolverUnknown, 0 SolverNotchecked, 212.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 41.4s 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, 0.2s SatisfiabilityAnalysisTime, 18.1s 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