java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label00_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 13:56:35,795 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 13:56:35,797 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 13:56:35,813 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 13:56:35,813 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 13:56:35,814 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 13:56:35,815 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 13:56:35,822 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 13:56:35,824 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 13:56:35,824 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 13:56:35,827 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 13:56:35,827 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 13:56:35,828 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 13:56:35,829 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 13:56:35,832 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 13:56:35,832 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 13:56:35,833 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 13:56:35,843 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 13:56:35,845 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 13:56:35,846 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 13:56:35,847 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 13:56:35,848 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 13:56:35,853 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-22 13:56:35,853 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-22 13:56:35,853 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-22 13:56:35,854 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-22 13:56:35,857 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-22 13:56:35,858 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-22 13:56:35,860 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-22 13:56:35,861 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-22 13:56:35,861 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-22 13:56:35,862 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-22 13:56:35,862 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-22 13:56:35,862 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-22 13:56:35,866 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-22 13:56:35,867 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-22 13:56:35,867 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-22 13:56:35,886 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 13:56:35,887 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 13:56:35,888 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 13:56:35,888 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 13:56:35,888 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 13:56:35,889 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 13:56:35,889 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 13:56:35,889 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 13:56:35,889 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 13:56:35,889 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 13:56:35,889 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 13:56:35,890 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 13:56:35,890 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 13:56:35,890 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 13:56:35,890 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 13:56:35,890 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 13:56:35,891 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 13:56:35,895 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 13:56:35,895 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 13:56:35,895 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 13:56:35,895 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 13:56:35,896 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 13:56:35,896 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 13:56:35,896 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 13:56:35,896 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 13:56:35,896 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 13:56:35,896 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 13:56:35,897 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 13:56:35,897 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 13:56:35,956 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 13:56:35,972 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 13:56:35,976 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 13:56:35,978 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 13:56:35,978 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 13:56:35,980 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label00_true-unreach-call.c [2018-07-22 13:56:36,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/c3ed0af75/4d5ab805fb4c4ab0b2ace93de2b2d8ba/FLAG015710d96 [2018-07-22 13:56:36,815 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 13:56:36,816 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label00_true-unreach-call.c [2018-07-22 13:56:36,865 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/c3ed0af75/4d5ab805fb4c4ab0b2ace93de2b2d8ba/FLAG015710d96 [2018-07-22 13:56:36,886 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/c3ed0af75/4d5ab805fb4c4ab0b2ace93de2b2d8ba [2018-07-22 13:56:36,897 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 13:56:36,904 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 13:56:36,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 13:56:36,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 13:56:36,914 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 13:56:36,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:56:36" (1/1) ... [2018-07-22 13:56:36,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37181870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:56:36, skipping insertion in model container [2018-07-22 13:56:36,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:56:36" (1/1) ... [2018-07-22 13:56:37,201 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 13:56:38,127 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 13:56:38,146 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 13:56:38,888 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 13:56:39,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:56:39 WrapperNode [2018-07-22 13:56:39,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 13:56:39,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 13:56:39,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 13:56:39,172 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 13:56:39,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:56:39" (1/1) ... [2018-07-22 13:56:39,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:56:39" (1/1) ... [2018-07-22 13:56:39,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 13:56:39,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 13:56:39,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 13:56:39,625 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 13:56:40,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:56:39" (1/1) ... [2018-07-22 13:56:40,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:56:39" (1/1) ... [2018-07-22 13:56:40,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:56:39" (1/1) ... [2018-07-22 13:56:40,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:56:39" (1/1) ... [2018-07-22 13:56:40,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:56:39" (1/1) ... [2018-07-22 13:56:40,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:56:39" (1/1) ... [2018-07-22 13:56:40,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:56:39" (1/1) ... [2018-07-22 13:56:40,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 13:56:40,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 13:56:40,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 13:56:40,621 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 13:56:40,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:56:39" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-22 13:56:40,699 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 13:56:40,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 13:56:40,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 13:56:51,701 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 13:56:51,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:56:51 BoogieIcfgContainer [2018-07-22 13:56:51,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 13:56:51,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 13:56:51,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 13:56:51,707 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 13:56:51,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 01:56:36" (1/3) ... [2018-07-22 13:56:51,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b85c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 01:56:51, skipping insertion in model container [2018-07-22 13:56:51,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:56:39" (2/3) ... [2018-07-22 13:56:51,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b85c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 01:56:51, skipping insertion in model container [2018-07-22 13:56:51,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:56:51" (3/3) ... [2018-07-22 13:56:51,713 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label00_true-unreach-call.c [2018-07-22 13:56:51,729 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 13:56:51,741 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 13:56:51,800 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 13:56:51,800 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 13:56:51,801 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 13:56:51,801 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 13:56:51,801 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 13:56:51,801 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 13:56:51,801 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 13:56:51,801 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 13:56:51,801 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 13:56:51,844 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-07-22 13:56:51,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-07-22 13:56:51,853 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 13:56:51,855 INFO L358 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] [2018-07-22 13:56:51,855 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 13:56:51,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1306950314, now seen corresponding path program 1 times [2018-07-22 13:56:51,862 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 13:56:51,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 13:56:51,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 13:56:51,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 13:56:51,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 13:56:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 13:56:52,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 13:56:52,376 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 13:56:52,377 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 13:56:52,379 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 13:56:52,394 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 13:56:52,395 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 13:56:52,398 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-07-22 13:57:03,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 13:57:03,484 INFO L93 Difference]: Finished difference Result 2102 states and 3914 transitions. [2018-07-22 13:57:03,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 13:57:03,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-07-22 13:57:03,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 13:57:03,515 INFO L225 Difference]: With dead ends: 2102 [2018-07-22 13:57:03,516 INFO L226 Difference]: Without dead ends: 1504 [2018-07-22 13:57:03,523 INFO L578 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 [2018-07-22 13:57:03,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2018-07-22 13:57:03,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1491. [2018-07-22 13:57:03,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1491 states. [2018-07-22 13:57:03,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 2416 transitions. [2018-07-22 13:57:03,661 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 2416 transitions. Word has length 55 [2018-07-22 13:57:03,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 13:57:03,663 INFO L471 AbstractCegarLoop]: Abstraction has 1491 states and 2416 transitions. [2018-07-22 13:57:03,663 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 13:57:03,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 2416 transitions. [2018-07-22 13:57:03,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-22 13:57:03,670 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 13:57:03,670 INFO L358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 13:57:03,671 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 13:57:03,673 INFO L82 PathProgramCache]: Analyzing trace with hash 375642321, now seen corresponding path program 1 times [2018-07-22 13:57:03,673 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 13:57:03,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 13:57:03,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 13:57:03,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 13:57:03,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 13:57:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 13:57:03,958 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 13:57:03,958 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 13:57:03,958 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 13:57:03,963 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 13:57:03,963 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 13:57:03,964 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 13:57:03,964 INFO L87 Difference]: Start difference. First operand 1491 states and 2416 transitions. Second operand 4 states. [2018-07-22 13:57:10,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 13:57:10,981 INFO L93 Difference]: Finished difference Result 4268 states and 6993 transitions. [2018-07-22 13:57:10,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 13:57:10,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2018-07-22 13:57:10,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 13:57:10,996 INFO L225 Difference]: With dead ends: 4268 [2018-07-22 13:57:10,996 INFO L226 Difference]: Without dead ends: 2779 [2018-07-22 13:57:11,002 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 13:57:11,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2018-07-22 13:57:11,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 2779. [2018-07-22 13:57:11,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2779 states. [2018-07-22 13:57:11,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2779 states to 2779 states and 3841 transitions. [2018-07-22 13:57:11,082 INFO L78 Accepts]: Start accepts. Automaton has 2779 states and 3841 transitions. Word has length 123 [2018-07-22 13:57:11,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 13:57:11,082 INFO L471 AbstractCegarLoop]: Abstraction has 2779 states and 3841 transitions. [2018-07-22 13:57:11,083 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 13:57:11,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2779 states and 3841 transitions. [2018-07-22 13:57:11,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-22 13:57:11,094 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 13:57:11,095 INFO L358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 13:57:11,095 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 13:57:11,095 INFO L82 PathProgramCache]: Analyzing trace with hash -755960674, now seen corresponding path program 1 times [2018-07-22 13:57:11,095 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 13:57:11,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 13:57:11,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 13:57:11,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 13:57:11,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 13:57:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 13:57:11,541 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 13:57:11,541 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 13:57:11,542 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-22 13:57:11,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 13:57:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 13:57:11,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 13:57:36,623 WARN L169 SmtUtils]: Spent 24.67 s on a formula simplification. DAG size of input: 468 DAG size of output: 131 [2018-07-22 13:57:37,618 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 13:57:37,638 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-22 13:57:37,639 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-07-22 13:57:37,639 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-22 13:57:37,640 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-22 13:57:37,640 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-22 13:57:37,640 INFO L87 Difference]: Start difference. First operand 2779 states and 3841 transitions. Second operand 6 states. [2018-07-22 13:59:44,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 13:59:44,668 INFO L93 Difference]: Finished difference Result 13782 states and 19018 transitions. [2018-07-22 13:59:44,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-22 13:59:44,669 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-07-22 13:59:44,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 13:59:44,707 INFO L225 Difference]: With dead ends: 13782 [2018-07-22 13:59:44,707 INFO L226 Difference]: Without dead ends: 8397 [2018-07-22 13:59:44,715 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-22 13:59:44,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8397 states. [2018-07-22 13:59:44,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8397 to 7914. [2018-07-22 13:59:44,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7914 states. [2018-07-22 13:59:44,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7914 states to 7914 states and 9843 transitions. [2018-07-22 13:59:44,915 INFO L78 Accepts]: Start accepts. Automaton has 7914 states and 9843 transitions. Word has length 126 [2018-07-22 13:59:44,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 13:59:44,916 INFO L471 AbstractCegarLoop]: Abstraction has 7914 states and 9843 transitions. [2018-07-22 13:59:44,916 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-22 13:59:44,916 INFO L276 IsEmpty]: Start isEmpty. Operand 7914 states and 9843 transitions. [2018-07-22 13:59:44,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-22 13:59:44,926 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 13:59:44,926 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-22 13:59:44,926 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 13:59:44,926 INFO L82 PathProgramCache]: Analyzing trace with hash 2070694565, now seen corresponding path program 1 times [2018-07-22 13:59:44,927 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 13:59:44,927 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 13:59:44,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 13:59:44,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 13:59:44,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 13:59:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 13:59:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 13:59:45,240 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 13:59:45,240 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 13:59:45,240 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 13:59:45,240 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 13:59:45,241 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 13:59:45,241 INFO L87 Difference]: Start difference. First operand 7914 states and 9843 transitions. Second operand 4 states. [2018-07-22 13:59:49,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 13:59:49,047 INFO L93 Difference]: Finished difference Result 21371 states and 27051 transitions. [2018-07-22 13:59:49,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 13:59:49,047 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 206 [2018-07-22 13:59:49,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 13:59:49,086 INFO L225 Difference]: With dead ends: 21371 [2018-07-22 13:59:49,086 INFO L226 Difference]: Without dead ends: 13459 [2018-07-22 13:59:49,095 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 13:59:49,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13459 states. [2018-07-22 13:59:49,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13459 to 13033. [2018-07-22 13:59:49,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13033 states. [2018-07-22 13:59:49,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13033 states to 13033 states and 15771 transitions. [2018-07-22 13:59:49,395 INFO L78 Accepts]: Start accepts. Automaton has 13033 states and 15771 transitions. Word has length 206 [2018-07-22 13:59:49,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 13:59:49,395 INFO L471 AbstractCegarLoop]: Abstraction has 13033 states and 15771 transitions. [2018-07-22 13:59:49,395 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 13:59:49,396 INFO L276 IsEmpty]: Start isEmpty. Operand 13033 states and 15771 transitions. [2018-07-22 13:59:49,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-07-22 13:59:49,402 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 13:59:49,403 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2018-07-22 13:59:49,403 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 13:59:49,403 INFO L82 PathProgramCache]: Analyzing trace with hash 960562810, now seen corresponding path program 1 times [2018-07-22 13:59:49,403 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 13:59:49,403 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 13:59:49,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 13:59:49,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 13:59:49,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 13:59:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 13:59:49,995 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 105 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 13:59:49,995 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 13:59:49,995 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 13:59:50,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 13:59:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 13:59:50,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 13:59:50,316 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 105 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 13:59:50,336 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 13:59:50,336 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2018-07-22 13:59:50,337 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-22 13:59:50,337 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-22 13:59:50,337 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-22 13:59:50,337 INFO L87 Difference]: Start difference. First operand 13033 states and 15771 transitions. Second operand 5 states. [2018-07-22 13:59:59,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 13:59:59,359 INFO L93 Difference]: Finished difference Result 42285 states and 51292 transitions. [2018-07-22 13:59:59,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-22 13:59:59,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 273 [2018-07-22 13:59:59,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 13:59:59,430 INFO L225 Difference]: With dead ends: 42285 [2018-07-22 13:59:59,431 INFO L226 Difference]: Without dead ends: 26193 [2018-07-22 13:59:59,449 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 271 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-22 13:59:59,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26193 states. [2018-07-22 13:59:59,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26193 to 25335. [2018-07-22 13:59:59,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25335 states. [2018-07-22 14:00:00,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25335 states to 25335 states and 28898 transitions. [2018-07-22 14:00:00,006 INFO L78 Accepts]: Start accepts. Automaton has 25335 states and 28898 transitions. Word has length 273 [2018-07-22 14:00:00,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 14:00:00,008 INFO L471 AbstractCegarLoop]: Abstraction has 25335 states and 28898 transitions. [2018-07-22 14:00:00,009 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-22 14:00:00,009 INFO L276 IsEmpty]: Start isEmpty. Operand 25335 states and 28898 transitions. [2018-07-22 14:00:00,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-22 14:00:00,015 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 14:00:00,016 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-22 14:00:00,016 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 14:00:00,016 INFO L82 PathProgramCache]: Analyzing trace with hash -571301849, now seen corresponding path program 1 times [2018-07-22 14:00:00,016 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 14:00:00,017 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 14:00:00,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 14:00:00,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 14:00:00,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 14:00:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 14:00:00,637 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 250 proven. 83 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-07-22 14:00:00,637 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 14:00:00,637 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 14:00:00,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 14:00:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 14:00:00,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 14:00:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 250 proven. 83 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-07-22 14:00:00,914 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 14:00:00,915 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 3] total 9 [2018-07-22 14:00:00,915 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-22 14:00:00,915 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-22 14:00:00,915 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-07-22 14:00:00,916 INFO L87 Difference]: Start difference. First operand 25335 states and 28898 transitions. Second operand 10 states. [2018-07-22 14:00:15,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 14:00:15,179 INFO L93 Difference]: Finished difference Result 54202 states and 61492 transitions. [2018-07-22 14:00:15,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-22 14:00:15,181 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 318 [2018-07-22 14:00:15,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 14:00:15,220 INFO L225 Difference]: With dead ends: 54202 [2018-07-22 14:00:15,220 INFO L226 Difference]: Without dead ends: 29295 [2018-07-22 14:00:15,246 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 316 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-07-22 14:00:15,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29295 states. [2018-07-22 14:00:15,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29295 to 27465. [2018-07-22 14:00:15,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27465 states. [2018-07-22 14:00:15,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27465 states to 27465 states and 31128 transitions. [2018-07-22 14:00:15,829 INFO L78 Accepts]: Start accepts. Automaton has 27465 states and 31128 transitions. Word has length 318 [2018-07-22 14:00:15,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 14:00:15,829 INFO L471 AbstractCegarLoop]: Abstraction has 27465 states and 31128 transitions. [2018-07-22 14:00:15,829 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-22 14:00:15,830 INFO L276 IsEmpty]: Start isEmpty. Operand 27465 states and 31128 transitions. [2018-07-22 14:00:15,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-22 14:00:15,840 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 14:00:15,840 INFO L358 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 14:00:15,840 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 14:00:15,841 INFO L82 PathProgramCache]: Analyzing trace with hash -173028014, now seen corresponding path program 1 times [2018-07-22 14:00:15,841 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 14:00:15,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 14:00:15,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 14:00:15,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 14:00:15,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 14:00:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 14:00:16,333 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 14:00:16,333 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 14:00:16,333 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 14:00:16,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 14:00:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 14:00:16,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 14:00:17,124 WARN L169 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2018-07-22 14:00:18,205 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 158 proven. 248 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 14:00:18,236 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 14:00:18,236 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2018-07-22 14:00:18,237 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-22 14:00:18,237 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-22 14:00:18,237 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-07-22 14:00:18,238 INFO L87 Difference]: Start difference. First operand 27465 states and 31128 transitions. Second operand 9 states. Received shutdown request... [2018-07-22 14:00:44,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-22 14:00:44,413 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-22 14:00:44,419 WARN L202 ceAbstractionStarter]: Timeout [2018-07-22 14:00:44,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 02:00:44 BoogieIcfgContainer [2018-07-22 14:00:44,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-22 14:00:44,421 INFO L168 Benchmark]: Toolchain (without parser) took 247523.00 ms. Allocated memory was 308.3 MB in the beginning and 1.3 GB in the end (delta: 962.1 MB). Free memory was 246.8 MB in the beginning and 537.2 MB in the end (delta: -290.4 MB). Peak memory consumption was 671.7 MB. Max. memory is 5.3 GB. [2018-07-22 14:00:44,422 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 308.3 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-22 14:00:44,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2265.50 ms. Allocated memory was 308.3 MB in the beginning and 337.6 MB in the end (delta: 29.4 MB). Free memory was 244.8 MB in the beginning and 171.5 MB in the end (delta: 73.3 MB). Peak memory consumption was 102.6 MB. Max. memory is 5.3 GB. [2018-07-22 14:00:44,423 INFO L168 Benchmark]: Boogie Procedure Inliner took 452.03 ms. Allocated memory was 337.6 MB in the beginning and 395.8 MB in the end (delta: 58.2 MB). Free memory was 171.5 MB in the beginning and 265.9 MB in the end (delta: -94.3 MB). Peak memory consumption was 25.4 MB. Max. memory is 5.3 GB. [2018-07-22 14:00:44,423 INFO L168 Benchmark]: Boogie Preprocessor took 995.03 ms. Allocated memory was 395.8 MB in the beginning and 586.7 MB in the end (delta: 190.8 MB). Free memory was 265.9 MB in the beginning and 473.0 MB in the end (delta: -207.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 5.3 GB. [2018-07-22 14:00:44,424 INFO L168 Benchmark]: RCFGBuilder took 11081.61 ms. Allocated memory was 586.7 MB in the beginning and 698.9 MB in the end (delta: 112.2 MB). Free memory was 473.0 MB in the beginning and 449.8 MB in the end (delta: 23.2 MB). Peak memory consumption was 199.6 MB. Max. memory is 5.3 GB. [2018-07-22 14:00:44,426 INFO L168 Benchmark]: TraceAbstraction took 232716.47 ms. Allocated memory was 698.9 MB in the beginning and 1.3 GB in the end (delta: 571.5 MB). Free memory was 449.8 MB in the beginning and 537.2 MB in the end (delta: -87.4 MB). Peak memory consumption was 484.1 MB. Max. memory is 5.3 GB. [2018-07-22 14:00:44,432 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 308.3 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 2265.50 ms. Allocated memory was 308.3 MB in the beginning and 337.6 MB in the end (delta: 29.4 MB). Free memory was 244.8 MB in the beginning and 171.5 MB in the end (delta: 73.3 MB). Peak memory consumption was 102.6 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 452.03 ms. Allocated memory was 337.6 MB in the beginning and 395.8 MB in the end (delta: 58.2 MB). Free memory was 171.5 MB in the beginning and 265.9 MB in the end (delta: -94.3 MB). Peak memory consumption was 25.4 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 995.03 ms. Allocated memory was 395.8 MB in the beginning and 586.7 MB in the end (delta: 190.8 MB). Free memory was 265.9 MB in the beginning and 473.0 MB in the end (delta: -207.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 5.3 GB. * RCFGBuilder took 11081.61 ms. Allocated memory was 586.7 MB in the beginning and 698.9 MB in the end (delta: 112.2 MB). Free memory was 473.0 MB in the beginning and 449.8 MB in the end (delta: 23.2 MB). Peak memory consumption was 199.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 232716.47 ms. Allocated memory was 698.9 MB in the beginning and 1.3 GB in the end (delta: 571.5 MB). Free memory was 449.8 MB in the beginning and 537.2 MB in the end (delta: -87.4 MB). Peak memory consumption was 484.1 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 170]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 170). Cancelled while BasicCegarLoop was constructing difference of abstraction (27465states) and interpolant automaton (currently 9 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (22665 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 232.6s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 198.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2517 SDtfs, 12054 SDslu, 2110 SDs, 0 SdLazy, 31640 SolverSat, 4185 SolverUnsat, 48 SolverUnknown, 0 SolverNotchecked, 190.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1069 GetRequests, 1035 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 26.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27465occurred in iteration=6, 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: 1.8s AutomataMinimizationTime, 6 MinimizatonAttempts, 3610 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 30.3s InterpolantComputationTime, 2462 NumberOfCodeBlocks, 2462 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 2451 ConstructedInterpolants, 236 QuantifiedInterpolants, 8113746 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1418 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 1249/2287 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem17_label00_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-22_14-00-44-456.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem17_label00_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-22_14-00-44-456.csv Completed graceful shutdown