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_label04_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:27:42,937 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:27:42,939 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:27:42,961 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:27:42,962 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:27:42,963 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:27:42,966 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:27:42,969 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:27:42,972 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:27:42,973 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:27:42,974 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:27:42,975 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:27:42,976 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:27:42,981 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:27:42,982 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:27:42,983 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:27:42,984 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:27:42,988 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:27:42,991 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:27:42,992 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:27:42,993 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:27:42,994 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:27:42,997 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:27:42,997 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:27:42,997 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:27:42,998 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:27:42,999 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:27:43,000 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:27:43,001 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:27:43,002 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:27:43,002 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:27:43,003 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 14:27:43,003 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 14:27:43,003 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 14:27:43,004 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 14:27:43,005 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 14:27:43,005 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 14:27:43,026 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:27:43,027 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:27:43,027 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:27:43,031 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:27:43,032 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:27:43,032 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:27:43,032 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:27:43,032 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:27:43,032 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:27:43,033 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:27:43,033 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:27:43,033 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:27:43,033 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:27:43,033 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:27:43,034 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:27:43,035 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:27:43,035 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:27:43,035 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:27:43,036 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:27:43,036 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:27:43,036 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:27:43,036 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:27:43,036 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:27:43,037 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:27:43,038 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:27:43,038 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:27:43,039 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:27:43,039 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:27:43,089 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:27:43,105 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:27:43,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:27:43,110 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:27:43,111 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:27:43,111 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label04_false-unreach-call.c [2018-10-24 14:27:43,172 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b6bcc0550/370426a572fd4fd6b3af544c136c078b/FLAG7eec43ae9 [2018-10-24 14:27:43,923 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:27:43,924 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label04_false-unreach-call.c [2018-10-24 14:27:43,958 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b6bcc0550/370426a572fd4fd6b3af544c136c078b/FLAG7eec43ae9 [2018-10-24 14:27:43,983 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b6bcc0550/370426a572fd4fd6b3af544c136c078b [2018-10-24 14:27:43,999 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:27:44,001 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:27:44,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:27:44,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:27:44,007 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:27:44,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:27:43" (1/1) ... [2018-10-24 14:27:44,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:27:44, skipping insertion in model container [2018-10-24 14:27:44,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:27:43" (1/1) ... [2018-10-24 14:27:44,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:27:44,161 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:27:45,206 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:27:45,211 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:27:45,613 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:27:45,641 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:27:45,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:27:45 WrapperNode [2018-10-24 14:27:45,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:27:45,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:27:45,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:27:45,643 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:27:45,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:27:45" (1/1) ... [2018-10-24 14:27:45,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:27:45" (1/1) ... [2018-10-24 14:27:46,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:27:46,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:27:46,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:27:46,233 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:27:46,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:27:45" (1/1) ... [2018-10-24 14:27:46,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:27:45" (1/1) ... [2018-10-24 14:27:46,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:27:45" (1/1) ... [2018-10-24 14:27:46,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:27:45" (1/1) ... [2018-10-24 14:27:46,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:27:45" (1/1) ... [2018-10-24 14:27:46,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:27:45" (1/1) ... [2018-10-24 14:27:46,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:27:45" (1/1) ... [2018-10-24 14:27:46,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:27:46,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:27:46,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:27:46,580 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:27:46,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:27:45" (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 14:27:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:27:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:27:46,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:27:56,743 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:27:56,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:27:56 BoogieIcfgContainer [2018-10-24 14:27:56,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:27:56,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:27:56,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:27:56,749 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:27:56,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:27:43" (1/3) ... [2018-10-24 14:27:56,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cee9e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:27:56, skipping insertion in model container [2018-10-24 14:27:56,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:27:45" (2/3) ... [2018-10-24 14:27:56,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cee9e9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:27:56, skipping insertion in model container [2018-10-24 14:27:56,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:27:56" (3/3) ... [2018-10-24 14:27:56,754 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label04_false-unreach-call.c [2018-10-24 14:27:56,765 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:27:56,775 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:27:56,792 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:27:56,835 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:27:56,836 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:27:56,837 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:27:56,837 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:27:56,837 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:27:56,837 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:27:56,837 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:27:56,837 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:27:56,838 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:27:56,888 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-24 14:27:56,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-24 14:27:56,900 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:27:56,902 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] [2018-10-24 14:27:56,905 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:27:56,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:27:56,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1407492386, now seen corresponding path program 1 times [2018-10-24 14:27:56,912 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:27:56,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:27:56,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:27:56,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:27:56,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:27:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:27:57,232 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 14:27:57,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:27:57,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:27:57,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:27:57,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:27:57,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:27:57,256 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-24 14:28:07,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:28:07,687 INFO L93 Difference]: Finished difference Result 2099 states and 3904 transitions. [2018-10-24 14:28:07,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:28:07,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-10-24 14:28:07,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:28:07,729 INFO L225 Difference]: With dead ends: 2099 [2018-10-24 14:28:07,729 INFO L226 Difference]: Without dead ends: 1501 [2018-10-24 14:28:07,742 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 14:28:07,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2018-10-24 14:28:07,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1499. [2018-10-24 14:28:07,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1499 states. [2018-10-24 14:28:07,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 2373 transitions. [2018-10-24 14:28:07,869 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 2373 transitions. Word has length 21 [2018-10-24 14:28:07,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:28:07,869 INFO L481 AbstractCegarLoop]: Abstraction has 1499 states and 2373 transitions. [2018-10-24 14:28:07,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:28:07,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 2373 transitions. [2018-10-24 14:28:07,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-24 14:28:07,875 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:28:07,876 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2018-10-24 14:28:07,876 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:28:07,876 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:28:07,877 INFO L82 PathProgramCache]: Analyzing trace with hash -973213194, now seen corresponding path program 1 times [2018-10-24 14:28:07,877 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:28:07,877 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:28:07,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:28:07,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:28:07,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:28:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:28:08,236 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:28:08,237 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:28:08,237 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 14:28:08,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:28:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:28:08,325 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:28:24,952 WARN L179 SmtUtils]: Spent 16.37 s on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2018-10-24 14:28:25,163 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:28:25,195 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:28:25,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 14:28:25,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:28:25,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:28:25,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:28:25,198 INFO L87 Difference]: Start difference. First operand 1499 states and 2373 transitions. Second operand 7 states. [2018-10-24 14:28:33,950 WARN L179 SmtUtils]: Spent 8.08 s on a formula simplification that was a NOOP. DAG size: 78 [2018-10-24 14:28:56,836 WARN L179 SmtUtils]: Spent 8.06 s on a formula simplification that was a NOOP. DAG size: 78 Received shutdown request... [2018-10-24 14:32:18,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 14:32:18,494 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:32:18,500 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:32:18,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:32:18 BoogieIcfgContainer [2018-10-24 14:32:18,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:32:18,501 INFO L168 Benchmark]: Toolchain (without parser) took 274501.85 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: -538.2 MB). Peak memory consumption was 557.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:32:18,502 INFO L168 Benchmark]: CDTParser took 0.22 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 14:32:18,503 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1640.41 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: 140.1 MB). Peak memory consumption was 140.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:32:18,503 INFO L168 Benchmark]: Boogie Procedure Inliner took 589.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 782.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -904.4 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-10-24 14:32:18,505 INFO L168 Benchmark]: Boogie Preprocessor took 346.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:32:18,505 INFO L168 Benchmark]: RCFGBuilder took 10164.34 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: 499.4 MB). Peak memory consumption was 499.4 MB. Max. memory is 7.1 GB. [2018-10-24 14:32:18,506 INFO L168 Benchmark]: TraceAbstraction took 261755.09 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 313.0 MB). Free memory was 1.6 GB in the beginning and 1.9 GB in the end (delta: -302.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2018-10-24 14:32:18,512 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1640.41 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: 140.1 MB). Peak memory consumption was 140.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 589.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 782.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -904.4 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 346.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10164.34 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: 499.4 MB). Peak memory consumption was 499.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 261755.09 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 313.0 MB). Free memory was 1.6 GB in the beginning and 1.9 GB in the end (delta: -302.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 68). Cancelled while BasicCegarLoop was constructing difference of abstraction (1499states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (9022 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, 243.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 971 SDtfs, 4712 SDslu, 850 SDs, 0 SdLazy, 10627 SolverSat, 2121 SolverUnsat, 93 SolverUnknown, 0 SolverNotchecked, 223.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 32.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1499occurred 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.2s InterpolantComputationTime, 205 NumberOfCodeBlocks, 205 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 202 ConstructedInterpolants, 19 QuantifiedInterpolants, 375672 SizeOfPredicates, 1 NumberOfNonLiveVariables, 155 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 18/36 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown