java -Xmx8000000000 -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 csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label58_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:56:46,844 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:56:46,846 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:56:46,861 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:56:46,861 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:56:46,863 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:56:46,864 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:56:46,867 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:56:46,868 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:56:46,870 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:56:46,871 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:56:46,871 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:56:46,872 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:56:46,873 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:56:46,874 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:56:46,875 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:56:46,876 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:56:46,878 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:56:46,880 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:56:46,881 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:56:46,883 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:56:46,884 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:56:46,886 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:56:46,886 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:56:46,887 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:56:46,888 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:56:46,889 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:56:46,889 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:56:46,890 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:56:46,891 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:56:46,892 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:56:46,892 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:56:46,892 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:56:46,893 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:56:46,894 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:56:46,895 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:56:46,895 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 14:56:46,914 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:56:46,915 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:56:46,915 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:56:46,916 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:56:46,916 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:56:46,916 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:56:46,916 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:56:46,916 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:56:46,917 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:56:46,917 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:56:46,917 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:56:46,919 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:56:46,919 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:56:46,919 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:56:46,919 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:56:46,920 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:56:46,920 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:56:46,920 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:56:46,921 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:56:46,921 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:56:46,921 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:56:46,921 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:56:46,921 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:56:46,922 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:56:46,922 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:56:46,922 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:56:46,922 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:56:46,924 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:56:46,924 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:56:46,924 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:56:46,924 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:56:46,924 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:56:46,925 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:56:46,996 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:56:47,008 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:56:47,012 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:56:47,014 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:56:47,014 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:56:47,015 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label58_true-unreach-call.c [2018-07-24 14:56:47,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80451f3d2/9e3fa5562efa4494a39860d78db244e9/FLAG49e49fdf2 [2018-07-24 14:56:47,818 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:56:47,819 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label58_true-unreach-call.c [2018-07-24 14:56:47,852 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80451f3d2/9e3fa5562efa4494a39860d78db244e9/FLAG49e49fdf2 [2018-07-24 14:56:47,875 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80451f3d2/9e3fa5562efa4494a39860d78db244e9 [2018-07-24 14:56:47,887 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:56:47,889 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:56:47,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:56:47,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:56:47,903 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:56:47,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:56:47" (1/1) ... [2018-07-24 14:56:47,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3819ccc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:56:47, skipping insertion in model container [2018-07-24 14:56:47,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:56:47" (1/1) ... [2018-07-24 14:56:48,240 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:56:49,054 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:56:49,073 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:56:49,635 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:56:49,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:56:49 WrapperNode [2018-07-24 14:56:49,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:56:49,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:56:49,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:56:49,878 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:56:49,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:56:49" (1/1) ... [2018-07-24 14:56:49,966 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:56:49" (1/1) ... [2018-07-24 14:56:50,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:56:50,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:56:50,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:56:50,158 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:56:50,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:56:49" (1/1) ... [2018-07-24 14:56:50,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:56:49" (1/1) ... [2018-07-24 14:56:50,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:56:49" (1/1) ... [2018-07-24 14:56:50,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:56:49" (1/1) ... [2018-07-24 14:56:50,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:56:49" (1/1) ... [2018-07-24 14:56:50,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:56:49" (1/1) ... [2018-07-24 14:56:50,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:56:49" (1/1) ... [2018-07-24 14:56:50,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:56:50,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:56:50,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:56:50,963 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:56:50,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:56:49" (1/1) ... No working directory specified, using /storage/repos/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 [2018-07-24 14:56:51,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:56:51,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:56:51,036 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:56:51,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:56:51,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:56:51,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:56:51,037 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:56:51,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:56:51,037 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:56:51,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:57:01,256 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:57:01,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:57:01 BoogieIcfgContainer [2018-07-24 14:57:01,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:57:01,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:57:01,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:57:01,263 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:57:01,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:56:47" (1/3) ... [2018-07-24 14:57:01,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2923ea56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:57:01, skipping insertion in model container [2018-07-24 14:57:01,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:56:49" (2/3) ... [2018-07-24 14:57:01,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2923ea56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:57:01, skipping insertion in model container [2018-07-24 14:57:01,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:57:01" (3/3) ... [2018-07-24 14:57:01,266 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label58_true-unreach-call.c [2018-07-24 14:57:01,274 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:57:01,283 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:57:01,343 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:57:01,344 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:57:01,344 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:57:01,344 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:57:01,345 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:57:01,345 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:57:01,345 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:57:01,345 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:57:01,345 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:57:01,388 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-07-24 14:57:01,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-24 14:57:01,398 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:57:01,399 INFO L353 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] [2018-07-24 14:57:01,400 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:57:01,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1875924100, now seen corresponding path program 1 times [2018-07-24 14:57:01,409 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:57:01,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:57:01,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:57:01,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:57:01,467 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:57:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:57:01,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:57:01,981 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:57:01,982 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:57:01,982 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:57:01,988 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:57:02,004 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:57:02,005 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:57:02,008 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-07-24 14:57:14,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:57:14,308 INFO L93 Difference]: Finished difference Result 2162 states and 4007 transitions. [2018-07-24 14:57:14,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:57:14,309 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-07-24 14:57:14,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:57:14,341 INFO L225 Difference]: With dead ends: 2162 [2018-07-24 14:57:14,341 INFO L226 Difference]: Without dead ends: 1552 [2018-07-24 14:57:14,353 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:57:14,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2018-07-24 14:57:14,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1525. [2018-07-24 14:57:14,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2018-07-24 14:57:14,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2696 transitions. [2018-07-24 14:57:14,509 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2696 transitions. Word has length 52 [2018-07-24 14:57:14,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:57:14,510 INFO L471 AbstractCegarLoop]: Abstraction has 1525 states and 2696 transitions. [2018-07-24 14:57:14,510 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:57:14,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2696 transitions. [2018-07-24 14:57:14,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-24 14:57:14,520 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:57:14,520 INFO L353 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, 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] [2018-07-24 14:57:14,521 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:57:14,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1524256091, now seen corresponding path program 1 times [2018-07-24 14:57:14,522 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:57:14,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:57:14,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:57:14,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:57:14,523 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:57:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:57:15,032 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:57:15,032 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:57:15,033 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:57:15,033 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:57:15,035 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:57:15,036 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:57:15,036 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:57:15,037 INFO L87 Difference]: Start difference. First operand 1525 states and 2696 transitions. Second operand 6 states. [2018-07-24 14:57:27,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:57:27,069 INFO L93 Difference]: Finished difference Result 4431 states and 8042 transitions. [2018-07-24 14:57:27,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:57:27,072 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-07-24 14:57:27,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:57:27,104 INFO L225 Difference]: With dead ends: 4431 [2018-07-24 14:57:27,104 INFO L226 Difference]: Without dead ends: 2912 [2018-07-24 14:57:27,111 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:57:27,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2018-07-24 14:57:27,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 2878. [2018-07-24 14:57:27,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2878 states. [2018-07-24 14:57:27,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2878 states to 2878 states and 4713 transitions. [2018-07-24 14:57:27,219 INFO L78 Accepts]: Start accepts. Automaton has 2878 states and 4713 transitions. Word has length 131 [2018-07-24 14:57:27,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:57:27,219 INFO L471 AbstractCegarLoop]: Abstraction has 2878 states and 4713 transitions. [2018-07-24 14:57:27,219 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:57:27,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2878 states and 4713 transitions. [2018-07-24 14:57:27,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-24 14:57:27,226 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:57:27,226 INFO L353 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, 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] [2018-07-24 14:57:27,226 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:57:27,227 INFO L82 PathProgramCache]: Analyzing trace with hash -38072070, now seen corresponding path program 1 times [2018-07-24 14:57:27,227 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:57:27,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:57:27,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:57:27,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:57:27,228 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:57:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:57:27,482 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:57:27,483 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:57:27,483 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:57:27,483 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:57:27,484 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:57:27,484 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:57:27,484 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:57:27,485 INFO L87 Difference]: Start difference. First operand 2878 states and 4713 transitions. Second operand 6 states. [2018-07-24 14:57:33,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:57:33,656 INFO L93 Difference]: Finished difference Result 7152 states and 11703 transitions. [2018-07-24 14:57:33,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:57:33,657 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-07-24 14:57:33,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:57:33,688 INFO L225 Difference]: With dead ends: 7152 [2018-07-24 14:57:33,688 INFO L226 Difference]: Without dead ends: 4280 [2018-07-24 14:57:33,702 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:57:33,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4280 states. [2018-07-24 14:57:33,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4280 to 4238. [2018-07-24 14:57:33,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4238 states. [2018-07-24 14:57:33,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 5870 transitions. [2018-07-24 14:57:33,826 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 5870 transitions. Word has length 132 [2018-07-24 14:57:33,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:57:33,827 INFO L471 AbstractCegarLoop]: Abstraction has 4238 states and 5870 transitions. [2018-07-24 14:57:33,827 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:57:33,827 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 5870 transitions. [2018-07-24 14:57:33,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-24 14:57:33,832 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:57:33,833 INFO L353 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:57:33,833 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:57:33,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1703108983, now seen corresponding path program 1 times [2018-07-24 14:57:33,833 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:57:33,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:57:33,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:57:33,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:57:33,835 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:57:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:57:34,423 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 109 proven. 53 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 14:57:34,423 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:57:34,423 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/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 [2018-07-24 14:57:34,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:57:34,432 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:57:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:57:34,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:57:34,786 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-07-24 14:57:34,786 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:57:35,195 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-07-24 14:57:35,229 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:57:35,230 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-07-24 14:57:35,230 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:57:35,231 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:57:35,231 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:57:35,231 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:57:35,234 INFO L87 Difference]: Start difference. First operand 4238 states and 5870 transitions. Second operand 3 states. [2018-07-24 14:57:40,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:57:40,974 INFO L93 Difference]: Finished difference Result 12466 states and 17703 transitions. [2018-07-24 14:57:40,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:57:40,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2018-07-24 14:57:40,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:57:41,016 INFO L225 Difference]: With dead ends: 12466 [2018-07-24 14:57:41,016 INFO L226 Difference]: Without dead ends: 8234 [2018-07-24 14:57:41,046 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 438 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:57:41,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8234 states. [2018-07-24 14:57:41,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8234 to 8232. [2018-07-24 14:57:41,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8232 states. [2018-07-24 14:57:41,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8232 states to 8232 states and 10655 transitions. [2018-07-24 14:57:41,264 INFO L78 Accepts]: Start accepts. Automaton has 8232 states and 10655 transitions. Word has length 219 [2018-07-24 14:57:41,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:57:41,265 INFO L471 AbstractCegarLoop]: Abstraction has 8232 states and 10655 transitions. [2018-07-24 14:57:41,265 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:57:41,265 INFO L276 IsEmpty]: Start isEmpty. Operand 8232 states and 10655 transitions. [2018-07-24 14:57:41,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-24 14:57:41,278 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:57:41,279 INFO L353 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, 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, 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] [2018-07-24 14:57:41,279 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:57:41,279 INFO L82 PathProgramCache]: Analyzing trace with hash 445411383, now seen corresponding path program 1 times [2018-07-24 14:57:41,279 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:57:41,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:57:41,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:57:41,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:57:41,282 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:57:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:57:42,236 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 95 proven. 81 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-24 14:57:42,236 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:57:42,236 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/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 [2018-07-24 14:57:42,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:57:42,258 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:57:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:57:42,375 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:57:42,896 WARN L169 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 21 [2018-07-24 14:57:43,372 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 95 proven. 55 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-07-24 14:57:43,372 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:57:44,157 WARN L169 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2018-07-24 14:57:44,953 WARN L169 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2018-07-24 14:57:45,513 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2018-07-24 14:57:46,005 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 95 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:57:46,026 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:57:46,026 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:57:46,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:57:46,042 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:57:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:57:46,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:57:46,548 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-07-24 14:57:46,548 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:57:46,960 WARN L169 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-07-24 14:57:47,069 WARN L169 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-07-24 14:57:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 95 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:57:52,246 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:57:52,246 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9, 7, 8] total 27 [2018-07-24 14:57:52,247 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:57:52,248 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 14:57:52,248 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 14:57:52,250 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=575, Unknown=2, NotChecked=0, Total=702 [2018-07-24 14:57:52,251 INFO L87 Difference]: Start difference. First operand 8232 states and 10655 transitions. Second operand 14 states. [2018-07-24 14:58:58,936 WARN L169 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2018-07-24 14:59:15,456 WARN L169 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2018-07-24 14:59:34,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:59:34,622 INFO L93 Difference]: Finished difference Result 78614 states and 133540 transitions. [2018-07-24 14:59:34,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-07-24 14:59:34,622 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 282 [2018-07-24 14:59:34,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:59:35,362 INFO L225 Difference]: With dead ends: 78614 [2018-07-24 14:59:35,362 INFO L226 Difference]: Without dead ends: 69876 [2018-07-24 14:59:35,798 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1286 GetRequests, 1109 SyntacticMatches, 3 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 11632 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=4719, Invalid=26079, Unknown=2, NotChecked=0, Total=30800 [2018-07-24 14:59:35,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69876 states. [2018-07-24 14:59:38,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69876 to 66518. [2018-07-24 14:59:38,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66518 states. [2018-07-24 14:59:39,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66518 states to 66518 states and 89197 transitions. [2018-07-24 14:59:39,101 INFO L78 Accepts]: Start accepts. Automaton has 66518 states and 89197 transitions. Word has length 282 [2018-07-24 14:59:39,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:59:39,102 INFO L471 AbstractCegarLoop]: Abstraction has 66518 states and 89197 transitions. [2018-07-24 14:59:39,102 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 14:59:39,102 INFO L276 IsEmpty]: Start isEmpty. Operand 66518 states and 89197 transitions. [2018-07-24 14:59:39,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-07-24 14:59:39,162 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:59:39,163 INFO L353 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:59:39,163 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:59:39,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1890666171, now seen corresponding path program 1 times [2018-07-24 14:59:39,164 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:59:39,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:59:39,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:59:39,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:59:39,165 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:59:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:59:39,499 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 152 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:59:39,499 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:59:39,499 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/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 [2018-07-24 14:59:39,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:59:39,509 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:59:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:59:39,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:59:39,774 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-07-24 14:59:39,774 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:59:39,918 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-07-24 14:59:39,939 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:59:39,939 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 6 [2018-07-24 14:59:39,939 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:59:39,940 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:59:39,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:59:39,940 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:59:39,941 INFO L87 Difference]: Start difference. First operand 66518 states and 89197 transitions. Second operand 3 states. [2018-07-24 14:59:45,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:59:45,731 INFO L93 Difference]: Finished difference Result 132996 states and 178944 transitions. [2018-07-24 14:59:45,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:59:45,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 287 [2018-07-24 14:59:45,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:59:46,013 INFO L225 Difference]: With dead ends: 132996 [2018-07-24 14:59:46,014 INFO L226 Difference]: Without dead ends: 66518 [2018-07-24 14:59:46,404 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 574 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:59:46,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66518 states. [2018-07-24 14:59:47,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66518 to 64153. [2018-07-24 14:59:47,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64153 states. [2018-07-24 14:59:47,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64153 states to 64153 states and 82751 transitions. [2018-07-24 14:59:47,778 INFO L78 Accepts]: Start accepts. Automaton has 64153 states and 82751 transitions. Word has length 287 [2018-07-24 14:59:47,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:59:47,778 INFO L471 AbstractCegarLoop]: Abstraction has 64153 states and 82751 transitions. [2018-07-24 14:59:47,778 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:59:47,779 INFO L276 IsEmpty]: Start isEmpty. Operand 64153 states and 82751 transitions. [2018-07-24 14:59:47,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-07-24 14:59:47,811 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:59:47,811 INFO L353 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:59:47,811 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:59:47,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1262603286, now seen corresponding path program 1 times [2018-07-24 14:59:47,812 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:59:47,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:59:47,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:59:47,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:59:47,813 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:59:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:59:48,087 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-07-24 14:59:48,087 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:59:48,088 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:59:48,088 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:59:48,088 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:59:48,088 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:59:48,089 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:59:48,089 INFO L87 Difference]: Start difference. First operand 64153 states and 82751 transitions. Second operand 4 states. [2018-07-24 14:59:59,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:59:59,501 INFO L93 Difference]: Finished difference Result 145049 states and 194366 transitions. [2018-07-24 14:59:59,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:59:59,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 291 [2018-07-24 14:59:59,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:59:59,870 INFO L225 Difference]: With dead ends: 145049 [2018-07-24 14:59:59,870 INFO L226 Difference]: Without dead ends: 80911 [2018-07-24 15:00:00,106 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 15:00:00,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80911 states. [2018-07-24 15:00:01,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80911 to 76366. [2018-07-24 15:00:01,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76366 states. [2018-07-24 15:00:02,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76366 states to 76366 states and 98377 transitions. [2018-07-24 15:00:02,900 INFO L78 Accepts]: Start accepts. Automaton has 76366 states and 98377 transitions. Word has length 291 [2018-07-24 15:00:02,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:00:02,901 INFO L471 AbstractCegarLoop]: Abstraction has 76366 states and 98377 transitions. [2018-07-24 15:00:02,901 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 15:00:02,901 INFO L276 IsEmpty]: Start isEmpty. Operand 76366 states and 98377 transitions. [2018-07-24 15:00:02,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-07-24 15:00:02,969 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:00:02,970 INFO L353 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, 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, 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] [2018-07-24 15:00:02,970 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:00:02,970 INFO L82 PathProgramCache]: Analyzing trace with hash 2134116548, now seen corresponding path program 1 times [2018-07-24 15:00:02,971 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:00:02,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:00:02,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:00:02,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:00:02,972 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:00:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:00:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 143 proven. 255 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 15:00:03,523 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:00:03,523 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:00:03,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:00:03,531 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:00:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:00:03,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:00:03,899 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2018-07-24 15:00:03,899 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:00:04,323 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 135 proven. 180 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-07-24 15:00:04,344 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:00:04,344 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 13 [2018-07-24 15:00:04,344 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:00:04,345 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:00:04,345 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:00:04,345 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-07-24 15:00:04,345 INFO L87 Difference]: Start difference. First operand 76366 states and 98377 transitions. Second operand 5 states. [2018-07-24 15:00:15,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:00:15,834 INFO L93 Difference]: Finished difference Result 169344 states and 208982 transitions. [2018-07-24 15:00:15,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 15:00:15,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 392 [2018-07-24 15:00:15,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:00:16,251 INFO L225 Difference]: With dead ends: 169344 [2018-07-24 15:00:16,251 INFO L226 Difference]: Without dead ends: 89810 [2018-07-24 15:00:16,575 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 782 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-07-24 15:00:16,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89810 states. [2018-07-24 15:00:17,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89810 to 86713. [2018-07-24 15:00:17,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86713 states. [2018-07-24 15:00:18,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86713 states to 86713 states and 102607 transitions. [2018-07-24 15:00:18,175 INFO L78 Accepts]: Start accepts. Automaton has 86713 states and 102607 transitions. Word has length 392 [2018-07-24 15:00:18,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:00:18,175 INFO L471 AbstractCegarLoop]: Abstraction has 86713 states and 102607 transitions. [2018-07-24 15:00:18,175 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 15:00:18,176 INFO L276 IsEmpty]: Start isEmpty. Operand 86713 states and 102607 transitions. [2018-07-24 15:00:18,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2018-07-24 15:00:18,232 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:00:18,233 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-07-24 15:00:18,233 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:00:18,233 INFO L82 PathProgramCache]: Analyzing trace with hash 780244789, now seen corresponding path program 1 times [2018-07-24 15:00:18,233 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:00:18,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:00:18,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:00:18,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:00:18,235 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:00:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:00:19,850 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2018-07-24 15:00:19,850 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:00:19,850 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:00:19,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:00:19,860 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:00:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:00:20,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:00:20,399 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2018-07-24 15:00:20,399 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:00:20,652 WARN L169 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-07-24 15:00:20,818 WARN L169 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-07-24 15:00:21,247 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2018-07-24 15:00:21,268 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:00:21,268 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 15:00:21,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:00:21,284 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:00:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:00:21,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:00:21,818 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2018-07-24 15:00:21,818 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:00:22,332 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2018-07-24 15:00:22,336 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:00:22,337 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 8 [2018-07-24 15:00:22,337 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:00:22,338 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:00:22,338 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:00:22,338 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:00:22,339 INFO L87 Difference]: Start difference. First operand 86713 states and 102607 transitions. Second operand 6 states. Received shutdown request... [2018-07-24 15:00:43,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 15:00:43,345 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 15:00:43,351 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 15:00:43,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 03:00:43 BoogieIcfgContainer [2018-07-24 15:00:43,352 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 15:00:43,353 INFO L168 Benchmark]: Toolchain (without parser) took 235464.17 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -757.3 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-07-24 15:00:43,354 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 15:00:43,354 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1985.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 182.3 MB). Peak memory consumption was 182.3 MB. Max. memory is 7.1 GB. [2018-07-24 15:00:43,355 INFO L168 Benchmark]: Boogie Procedure Inliner took 280.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-07-24 15:00:43,356 INFO L168 Benchmark]: Boogie Preprocessor took 804.33 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 938.0 MB). Free memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. [2018-07-24 15:00:43,357 INFO L168 Benchmark]: RCFGBuilder took 10294.53 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 490.9 MB). Peak memory consumption was 490.9 MB. Max. memory is 7.1 GB. [2018-07-24 15:00:43,357 INFO L168 Benchmark]: TraceAbstraction took 222093.65 ms. Allocated memory was 2.5 GB in the beginning and 3.7 GB in the end (delta: 1.2 GB). Free memory was 1.9 GB in the beginning and 2.2 GB in the end (delta: -318.0 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-07-24 15:00:43,363 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1985.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 182.3 MB). Peak memory consumption was 182.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 280.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 804.33 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 938.0 MB). Free memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10294.53 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 490.9 MB). Peak memory consumption was 490.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222093.65 ms. Allocated memory was 2.5 GB in the beginning and 3.7 GB in the end (delta: 1.2 GB). Free memory was 1.9 GB in the beginning and 2.2 GB in the end (delta: -318.0 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 143]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 143). Cancelled while BasicCegarLoop was constructing difference of abstraction (86713states) and interpolant automaton (currently 11 states, 6 states before enhancement), while ReachableStatesComputation was computing reachable states (216226 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 222.0s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 191.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3983 SDtfs, 26602 SDslu, 4176 SDs, 0 SdLazy, 57166 SolverSat, 11593 SolverUnsat, 12 SolverUnknown, 0 SolverNotchecked, 157.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5023 GetRequests, 4782 SyntacticMatches, 14 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 11693 ImplicationChecksByTransitivity, 16.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86713occurred in iteration=8, 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: 9.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 13470 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 16.5s InterpolantComputationTime, 4649 NumberOfCodeBlocks, 4649 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 7022 ConstructedInterpolants, 191 QuantifiedInterpolants, 9201485 SizeOfPredicates, 23 NumberOfNonLiveVariables, 3941 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 23 InterpolantComputations, 9 PerfectInterpolantSequences, 6032/6877 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/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label58_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_15-00-43-379.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label58_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_15-00-43-379.csv Completed graceful shutdown