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_label16_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:28:57,858 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:28:57,863 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:28:57,886 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:28:57,886 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:28:57,888 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:28:57,889 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:28:57,893 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:28:57,895 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:28:57,897 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:28:57,900 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:28:57,900 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:28:57,902 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:28:57,903 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:28:57,904 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:28:57,904 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:28:57,915 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:28:57,920 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:28:57,925 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:28:57,927 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:28:57,931 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:28:57,932 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:28:57,937 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:28:57,937 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:28:57,938 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:28:57,939 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:28:57,940 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:28:57,943 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:28:57,944 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:28:57,945 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:28:57,946 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:28:57,946 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 14:28:57,947 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 14:28:57,947 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 14:28:57,949 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 14:28:57,950 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 14:28:57,950 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 14:28:57,978 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:28:57,978 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:28:57,980 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:28:57,980 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:28:57,981 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:28:57,981 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:28:57,982 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:28:57,982 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:28:57,982 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:28:57,982 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:28:57,982 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:28:57,983 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:28:57,983 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:28:57,983 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:28:57,983 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:28:57,983 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:28:57,985 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:28:57,985 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:28:57,985 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:28:57,985 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:28:57,985 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:28:57,986 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:28:57,986 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:28:57,986 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:28:57,986 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:28:57,986 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:28:57,987 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:28:57,987 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:28:58,056 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:28:58,074 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:28:58,080 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:28:58,081 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:28:58,082 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:28:58,083 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label16_false-unreach-call.c [2018-10-24 14:28:58,143 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8f6cd56bc/80593a604fd14065be38127516ac1a92/FLAG1dd0ad912 [2018-10-24 14:28:58,850 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:28:58,853 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label16_false-unreach-call.c [2018-10-24 14:28:58,882 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8f6cd56bc/80593a604fd14065be38127516ac1a92/FLAG1dd0ad912 [2018-10-24 14:28:58,904 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8f6cd56bc/80593a604fd14065be38127516ac1a92 [2018-10-24 14:28:58,917 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:28:58,919 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:28:58,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:28:58,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:28:58,925 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:28:58,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:28:58" (1/1) ... [2018-10-24 14:28:58,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34957d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:28:58, skipping insertion in model container [2018-10-24 14:28:58,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:28:58" (1/1) ... [2018-10-24 14:28:58,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:28:59,076 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:29:00,128 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:29:00,132 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:29:00,518 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:29:00,543 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:29:00,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:00 WrapperNode [2018-10-24 14:29:00,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:29:00,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:29:00,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:29:00,546 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:29:00,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:00" (1/1) ... [2018-10-24 14:29:00,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:00" (1/1) ... [2018-10-24 14:29:01,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:29:01,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:29:01,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:29:01,100 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:29:01,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:00" (1/1) ... [2018-10-24 14:29:01,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:00" (1/1) ... [2018-10-24 14:29:01,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:00" (1/1) ... [2018-10-24 14:29:01,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:00" (1/1) ... [2018-10-24 14:29:01,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:00" (1/1) ... [2018-10-24 14:29:01,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:00" (1/1) ... [2018-10-24 14:29:01,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:00" (1/1) ... [2018-10-24 14:29:01,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:29:01,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:29:01,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:29:01,421 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:29:01,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:00" (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 14:29:01,498 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:29:01,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:29:01,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:29:10,453 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:29:10,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:29:10 BoogieIcfgContainer [2018-10-24 14:29:10,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:29:10,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:29:10,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:29:10,459 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:29:10,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:28:58" (1/3) ... [2018-10-24 14:29:10,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c9dab4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:29:10, skipping insertion in model container [2018-10-24 14:29:10,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:29:00" (2/3) ... [2018-10-24 14:29:10,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c9dab4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:29:10, skipping insertion in model container [2018-10-24 14:29:10,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:29:10" (3/3) ... [2018-10-24 14:29:10,464 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label16_false-unreach-call.c [2018-10-24 14:29:10,475 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:29:10,485 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:29:10,504 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:29:10,547 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:29:10,548 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:29:10,548 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:29:10,548 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:29:10,549 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:29:10,549 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:29:10,549 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:29:10,549 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:29:10,549 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:29:10,582 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-24 14:29:10,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-24 14:29:10,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:29:10,592 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] [2018-10-24 14:29:10,595 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:29:10,601 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:29:10,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1580163962, now seen corresponding path program 1 times [2018-10-24 14:29:10,603 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:29:10,604 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:29:10,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:29:10,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:29:10,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:29:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:29:11,023 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 14:29:11,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:29:11,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:29:11,031 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:29:11,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:29:11,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:29:11,047 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-24 14:29:20,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:29:20,250 INFO L93 Difference]: Finished difference Result 2093 states and 3901 transitions. [2018-10-24 14:29:20,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:29:20,258 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-10-24 14:29:20,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:29:20,292 INFO L225 Difference]: With dead ends: 2093 [2018-10-24 14:29:20,292 INFO L226 Difference]: Without dead ends: 1495 [2018-10-24 14:29:20,300 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 14:29:20,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2018-10-24 14:29:20,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1488. [2018-10-24 14:29:20,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2018-10-24 14:29:20,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2247 transitions. [2018-10-24 14:29:20,434 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2247 transitions. Word has length 26 [2018-10-24 14:29:20,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:29:20,434 INFO L481 AbstractCegarLoop]: Abstraction has 1488 states and 2247 transitions. [2018-10-24 14:29:20,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:29:20,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2247 transitions. [2018-10-24 14:29:20,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-24 14:29:20,439 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:29:20,440 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, 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 14:29:20,440 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:29:20,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:29:20,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1759160889, now seen corresponding path program 1 times [2018-10-24 14:29:20,441 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:29:20,442 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:29:20,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:29:20,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:29:20,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:29:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:29:20,794 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:29:20,794 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:29:20,794 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 14:29:20,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:29:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:29:20,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:29:37,424 WARN L179 SmtUtils]: Spent 16.29 s on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2018-10-24 14:29:37,707 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:29:37,745 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:29:37,746 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 14:29:37,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:29:37,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:29:37,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:29:37,748 INFO L87 Difference]: Start difference. First operand 1488 states and 2247 transitions. Second operand 7 states. [2018-10-24 14:29:37,939 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-24 14:29:47,679 WARN L179 SmtUtils]: Spent 8.16 s on a formula simplification that was a NOOP. DAG size: 78 [2018-10-24 14:30:06,481 WARN L179 SmtUtils]: Spent 8.05 s on a formula simplification that was a NOOP. DAG size: 78 [2018-10-24 14:30:25,158 WARN L179 SmtUtils]: Spent 8.05 s on a formula simplification that was a NOOP. DAG size: 78 Received shutdown request... [2018-10-24 14:33:32,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 14:33:32,146 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:33:32,153 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:33:32,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:33:32 BoogieIcfgContainer [2018-10-24 14:33:32,154 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:33:32,155 INFO L168 Benchmark]: Toolchain (without parser) took 273237.27 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 2.1 GB in the end (delta: -693.9 MB). Peak memory consumption was 387.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:33:32,156 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:33:32,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1624.71 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 14:33:32,157 INFO L168 Benchmark]: Boogie Procedure Inliner took 553.57 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -884.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:33:32,158 INFO L168 Benchmark]: Boogie Preprocessor took 321.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2018-10-24 14:33:32,159 INFO L168 Benchmark]: RCFGBuilder took 9033.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 483.7 MB). Peak memory consumption was 483.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:33:32,160 INFO L168 Benchmark]: TraceAbstraction took 261698.26 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 320.3 MB). Free memory was 1.6 GB in the beginning and 2.1 GB in the end (delta: -459.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:33:32,165 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1624.71 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 553.57 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -884.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 321.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9033.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 483.7 MB). Peak memory consumption was 483.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 261698.26 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 320.3 MB). Free memory was 1.6 GB in the beginning and 2.1 GB in the end (delta: -459.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 83). 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 (6004 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 261.6s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 243.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 704 SDtfs, 4811 SDslu, 679 SDs, 0 SdLazy, 8597 SolverSat, 2385 SolverUnsat, 89 SolverUnknown, 0 SolverNotchecked, 215.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 41.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1488occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.3s InterpolantComputationTime, 220 NumberOfCodeBlocks, 220 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 217 ConstructedInterpolants, 24 QuantifiedInterpolants, 448033 SizeOfPredicates, 1 NumberOfNonLiveVariables, 160 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 23/46 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown