java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label32_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-08 06:13:44,943 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-08 06:13:44,945 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-08 06:13:44,957 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-08 06:13:44,958 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-08 06:13:44,959 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-08 06:13:44,960 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-08 06:13:44,962 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-08 06:13:44,964 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-08 06:13:44,965 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-08 06:13:44,966 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-08 06:13:44,966 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-08 06:13:44,967 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-08 06:13:44,968 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-08 06:13:44,969 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-08 06:13:44,970 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-08 06:13:44,971 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-08 06:13:44,973 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-08 06:13:44,975 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-08 06:13:44,977 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-08 06:13:44,978 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-08 06:13:44,979 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-08 06:13:44,982 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-08 06:13:44,982 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-08 06:13:44,983 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-08 06:13:44,984 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-08 06:13:44,988 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-08 06:13:44,989 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-08 06:13:44,992 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-08 06:13:44,993 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-08 06:13:44,993 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-08 06:13:44,994 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-08-08 06:13:44,996 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-08 06:13:44,996 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-08 06:13:44,997 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-08 06:13:44,998 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-08 06:13:45,001 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf [2018-08-08 06:13:45,032 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-08 06:13:45,033 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-08 06:13:45,034 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-08 06:13:45,034 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-08 06:13:45,035 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-08 06:13:45,036 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-08 06:13:45,036 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-08 06:13:45,036 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-08 06:13:45,036 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-08 06:13:45,036 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-08 06:13:45,037 INFO L133 SettingsManager]: * Interval Domain=false [2018-08-08 06:13:45,038 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-08 06:13:45,039 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-08 06:13:45,039 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-08 06:13:45,039 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-08 06:13:45,039 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-08 06:13:45,039 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-08 06:13:45,040 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-08 06:13:45,040 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-08 06:13:45,040 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-08 06:13:45,040 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-08 06:13:45,040 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-08 06:13:45,041 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-08 06:13:45,041 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-08 06:13:45,041 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-08 06:13:45,043 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-08 06:13:45,044 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-08 06:13:45,044 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-08-08 06:13:45,044 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-08 06:13:45,044 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-08 06:13:45,044 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-08 06:13:45,045 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-08 06:13:45,045 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-08 06:13:45,115 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-08 06:13:45,132 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-08 06:13:45,138 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-08 06:13:45,139 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-08 06:13:45,140 INFO L276 PluginConnector]: CDTParser initialized [2018-08-08 06:13:45,141 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label32_true-unreach-call_false-termination.c [2018-08-08 06:13:45,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22a61f99a/ef025fae0d7848099eb5273aac4e0568/FLAG6a1935df1 [2018-08-08 06:13:45,807 INFO L276 CDTParser]: Found 1 translation units. [2018-08-08 06:13:45,808 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label32_true-unreach-call_false-termination.c [2018-08-08 06:13:45,832 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22a61f99a/ef025fae0d7848099eb5273aac4e0568/FLAG6a1935df1 [2018-08-08 06:13:45,855 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22a61f99a/ef025fae0d7848099eb5273aac4e0568 [2018-08-08 06:13:45,869 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-08 06:13:45,872 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-08 06:13:45,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-08 06:13:45,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-08 06:13:45,881 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-08 06:13:45,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 06:13:45" (1/1) ... [2018-08-08 06:13:45,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6470a7b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 06:13:45, skipping insertion in model container [2018-08-08 06:13:45,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 06:13:45" (1/1) ... [2018-08-08 06:13:46,150 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-08 06:13:46,492 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-08 06:13:46,519 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-08 06:13:46,691 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-08 06:13:46,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 06:13:46 WrapperNode [2018-08-08 06:13:46,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-08 06:13:46,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-08 06:13:46,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-08 06:13:46,742 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-08 06:13:46,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 06:13:46" (1/1) ... [2018-08-08 06:13:46,782 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 06:13:46" (1/1) ... [2018-08-08 06:13:46,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-08 06:13:46,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-08 06:13:46,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-08 06:13:46,876 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-08 06:13:46,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 06:13:46" (1/1) ... [2018-08-08 06:13:46,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 06:13:46" (1/1) ... [2018-08-08 06:13:46,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 06:13:46" (1/1) ... [2018-08-08 06:13:46,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 06:13:46" (1/1) ... [2018-08-08 06:13:47,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 06:13:46" (1/1) ... [2018-08-08 06:13:47,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 06:13:46" (1/1) ... [2018-08-08 06:13:47,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 06:13:46" (1/1) ... [2018-08-08 06:13:47,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-08 06:13:47,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-08 06:13:47,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-08 06:13:47,169 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-08 06:13:47,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 06:13:46" (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 [2018-08-08 06:13:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-08-08 06:13:47,248 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-08-08 06:13:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-08 06:13:47,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-08 06:13:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-08 06:13:47,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-08 06:13:47,252 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-08 06:13:47,252 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-08 06:13:51,241 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-08 06:13:51,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 06:13:51 BoogieIcfgContainer [2018-08-08 06:13:51,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-08 06:13:51,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-08 06:13:51,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-08 06:13:51,247 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-08 06:13:51,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.08 06:13:45" (1/3) ... [2018-08-08 06:13:51,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e74b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.08 06:13:51, skipping insertion in model container [2018-08-08 06:13:51,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 06:13:46" (2/3) ... [2018-08-08 06:13:51,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e74b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.08 06:13:51, skipping insertion in model container [2018-08-08 06:13:51,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 06:13:51" (3/3) ... [2018-08-08 06:13:51,251 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label32_true-unreach-call_false-termination.c [2018-08-08 06:13:51,262 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-08 06:13:51,272 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-08 06:13:51,330 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-08 06:13:51,331 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-08 06:13:51,332 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-08 06:13:51,332 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-08 06:13:51,332 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-08 06:13:51,332 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-08 06:13:51,332 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-08 06:13:51,333 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-08 06:13:51,333 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-08 06:13:51,362 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-08-08 06:13:51,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-08-08 06:13:51,373 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 06:13:51,374 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-08 06:13:51,376 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 06:13:51,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1419189604, now seen corresponding path program 1 times [2018-08-08 06:13:51,385 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 06:13:51,386 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 63 with the following transitions: [2018-08-08 06:13:51,390 INFO L202 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [395], [397], [947], [948], [952], [956], [962], [966], [973], [974], [975], [977] [2018-08-08 06:13:51,471 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-08-08 06:13:51,472 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 06:13:53,421 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 06:13:53,424 INFO L272 AbstractInterpreter]: Visited 61 different actions 61 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-08-08 06:13:53,442 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 06:13:54,399 INFO L232 lantSequenceWeakener]: Weakened 60 states. On average, predicates are now at 80.73% of their original sizes. [2018-08-08 06:13:54,399 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 06:13:54,756 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 06:13:54,758 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 06:13:54,759 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-08 06:13:54,759 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 06:13:54,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-08 06:13:54,777 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-08 06:13:54,778 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-08-08 06:13:54,781 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 6 states. [2018-08-08 06:14:00,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 06:14:00,300 INFO L93 Difference]: Finished difference Result 693 states and 1229 transitions. [2018-08-08 06:14:00,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-08 06:14:00,303 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2018-08-08 06:14:00,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 06:14:00,330 INFO L225 Difference]: With dead ends: 693 [2018-08-08 06:14:00,331 INFO L226 Difference]: Without dead ends: 436 [2018-08-08 06:14:00,337 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 61 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-08-08 06:14:00,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2018-08-08 06:14:00,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 434. [2018-08-08 06:14:00,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-08-08 06:14:00,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 615 transitions. [2018-08-08 06:14:00,423 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 615 transitions. Word has length 62 [2018-08-08 06:14:00,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 06:14:00,425 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 615 transitions. [2018-08-08 06:14:00,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-08 06:14:00,427 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 615 transitions. [2018-08-08 06:14:00,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-08-08 06:14:00,440 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 06:14:00,440 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-08 06:14:00,441 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 06:14:00,441 INFO L82 PathProgramCache]: Analyzing trace with hash -323439695, now seen corresponding path program 1 times [2018-08-08 06:14:00,441 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 06:14:00,442 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 148 with the following transitions: [2018-08-08 06:14:00,443 INFO L202 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [395], [397], [400], [408], [416], [424], [432], [440], [448], [456], [464], [472], [480], [488], [493], [497], [501], [505], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [549], [552], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-08-08 06:14:00,453 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-08-08 06:14:00,453 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 06:14:10,252 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 06:14:10,252 INFO L272 AbstractInterpreter]: Visited 92 different actions 177 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-08-08 06:14:10,259 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 06:14:14,195 INFO L232 lantSequenceWeakener]: Weakened 145 states. On average, predicates are now at 78.79% of their original sizes. [2018-08-08 06:14:14,196 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 06:14:16,188 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 06:14:16,188 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 06:14:16,189 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-08-08 06:14:16,189 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 06:14:16,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-08-08 06:14:16,191 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-08-08 06:14:16,192 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-08-08 06:14:16,192 INFO L87 Difference]: Start difference. First operand 434 states and 615 transitions. Second operand 11 states. [2018-08-08 06:14:29,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 06:14:29,332 INFO L93 Difference]: Finished difference Result 1051 states and 1763 transitions. [2018-08-08 06:14:29,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-08-08 06:14:29,334 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 147 [2018-08-08 06:14:29,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 06:14:29,344 INFO L225 Difference]: With dead ends: 1051 [2018-08-08 06:14:29,344 INFO L226 Difference]: Without dead ends: 806 [2018-08-08 06:14:29,347 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 153 GetRequests, 87 SyntacticMatches, 50 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-08-08 06:14:29,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2018-08-08 06:14:29,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 803. [2018-08-08 06:14:29,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2018-08-08 06:14:29,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1002 transitions. [2018-08-08 06:14:29,409 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1002 transitions. Word has length 147 [2018-08-08 06:14:29,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 06:14:29,410 INFO L480 AbstractCegarLoop]: Abstraction has 803 states and 1002 transitions. [2018-08-08 06:14:29,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-08-08 06:14:29,411 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1002 transitions. [2018-08-08 06:14:29,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-08-08 06:14:29,416 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 06:14:29,417 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-08 06:14:29,417 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 06:14:29,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1191352227, now seen corresponding path program 1 times [2018-08-08 06:14:29,418 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 06:14:29,418 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 174 with the following transitions: [2018-08-08 06:14:29,418 INFO L202 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [395], [397], [400], [408], [416], [424], [432], [440], [448], [456], [464], [472], [480], [488], [493], [497], [501], [505], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [549], [553], [557], [561], [565], [569], [573], [577], [581], [585], [589], [593], [597], [601], [605], [609], [613], [617], [621], [625], [629], [633], [637], [641], [645], [649], [653], [656], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-08-08 06:14:29,424 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-08-08 06:14:29,424 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 06:14:50,722 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 06:14:50,723 INFO L272 AbstractInterpreter]: Visited 118 different actions 230 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-08-08 06:14:50,729 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 06:14:59,265 INFO L232 lantSequenceWeakener]: Weakened 171 states. On average, predicates are now at 78.56% of their original sizes. [2018-08-08 06:14:59,266 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 06:15:01,075 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 06:15:01,075 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 06:15:01,076 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-08-08 06:15:01,076 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 06:15:01,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-08-08 06:15:01,077 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-08-08 06:15:01,077 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-08-08 06:15:01,078 INFO L87 Difference]: Start difference. First operand 803 states and 1002 transitions. Second operand 11 states. [2018-08-08 06:15:13,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 06:15:13,244 INFO L93 Difference]: Finished difference Result 1236 states and 1786 transitions. [2018-08-08 06:15:13,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-08-08 06:15:13,248 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 173 [2018-08-08 06:15:13,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 06:15:13,257 INFO L225 Difference]: With dead ends: 1236 [2018-08-08 06:15:13,258 INFO L226 Difference]: Without dead ends: 991 [2018-08-08 06:15:13,260 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 180 GetRequests, 113 SyntacticMatches, 50 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2018-08-08 06:15:13,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2018-08-08 06:15:13,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 988. [2018-08-08 06:15:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2018-08-08 06:15:13,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1200 transitions. [2018-08-08 06:15:13,306 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1200 transitions. Word has length 173 [2018-08-08 06:15:13,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 06:15:13,307 INFO L480 AbstractCegarLoop]: Abstraction has 988 states and 1200 transitions. [2018-08-08 06:15:13,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-08-08 06:15:13,307 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1200 transitions. [2018-08-08 06:15:13,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-08-08 06:15:13,318 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 06:15:13,318 INFO L376 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, 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] [2018-08-08 06:15:13,319 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 06:15:13,319 INFO L82 PathProgramCache]: Analyzing trace with hash -521295248, now seen corresponding path program 1 times [2018-08-08 06:15:13,319 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 06:15:13,320 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 259 with the following transitions: [2018-08-08 06:15:13,320 INFO L202 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [395], [397], [400], [408], [416], [424], [432], [440], [448], [456], [464], [472], [480], [488], [493], [497], [501], [505], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [549], [552], [553], [557], [561], [565], [569], [573], [577], [581], [585], [589], [593], [597], [601], [605], [609], [613], [617], [621], [625], [629], [633], [637], [641], [645], [649], [653], [656], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-08-08 06:15:13,328 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-08-08 06:15:13,328 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 06:15:31,012 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 06:15:31,012 INFO L272 AbstractInterpreter]: Visited 119 different actions 352 times. Merged at 7 different actions 17 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-08-08 06:15:31,021 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 06:15:34,128 INFO L232 lantSequenceWeakener]: Weakened 256 states. On average, predicates are now at 78.15% of their original sizes. [2018-08-08 06:15:34,128 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 06:15:34,940 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 06:15:34,941 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 06:15:34,941 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-08-08 06:15:34,942 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 06:15:34,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-08-08 06:15:34,943 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-08-08 06:15:34,943 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2018-08-08 06:15:34,944 INFO L87 Difference]: Start difference. First operand 988 states and 1200 transitions. Second operand 16 states. [2018-08-08 06:15:52,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 06:15:52,472 INFO L93 Difference]: Finished difference Result 2043 states and 3188 transitions. [2018-08-08 06:15:52,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-08-08 06:15:52,473 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 258 [2018-08-08 06:15:52,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 06:15:52,492 INFO L225 Difference]: With dead ends: 2043 [2018-08-08 06:15:52,493 INFO L226 Difference]: Without dead ends: 1798 [2018-08-08 06:15:52,497 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 276 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=260, Invalid=930, Unknown=0, NotChecked=0, Total=1190 [2018-08-08 06:15:52,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2018-08-08 06:15:52,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1605. [2018-08-08 06:15:52,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2018-08-08 06:15:52,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 1893 transitions. [2018-08-08 06:15:52,571 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 1893 transitions. Word has length 258 [2018-08-08 06:15:52,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 06:15:52,573 INFO L480 AbstractCegarLoop]: Abstraction has 1605 states and 1893 transitions. [2018-08-08 06:15:52,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-08-08 06:15:52,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 1893 transitions. [2018-08-08 06:15:52,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-08-08 06:15:52,580 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 06:15:52,580 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-08 06:15:52,581 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 06:15:52,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1665637423, now seen corresponding path program 1 times [2018-08-08 06:15:52,581 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 06:15:52,582 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 284 with the following transitions: [2018-08-08 06:15:52,582 INFO L202 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [395], [397], [400], [408], [416], [424], [432], [440], [448], [456], [464], [472], [480], [488], [493], [497], [501], [505], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [549], [553], [557], [561], [565], [569], [573], [577], [581], [585], [589], [593], [597], [601], [605], [609], [613], [617], [621], [625], [629], [633], [637], [641], [645], [649], [652], [653], [656], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-08-08 06:15:52,600 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-08-08 06:15:52,601 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 06:16:17,090 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-08-08 06:16:37,557 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 06:16:37,558 INFO L272 AbstractInterpreter]: Visited 119 different actions 465 times. Merged at 7 different actions 22 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-08-08 06:16:37,593 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 06:16:42,346 INFO L232 lantSequenceWeakener]: Weakened 281 states. On average, predicates are now at 78.09% of their original sizes. [2018-08-08 06:16:42,346 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 06:16:43,902 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 06:16:43,903 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 06:16:43,903 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-08-08 06:16:43,903 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 06:16:43,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-08-08 06:16:43,905 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-08-08 06:16:43,905 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-08-08 06:16:43,906 INFO L87 Difference]: Start difference. First operand 1605 states and 1893 transitions. Second operand 11 states. [2018-08-08 06:16:51,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 06:16:51,895 INFO L93 Difference]: Finished difference Result 2044 states and 2683 transitions. [2018-08-08 06:16:51,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-08-08 06:16:51,896 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 283 [2018-08-08 06:16:51,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 06:16:51,904 INFO L225 Difference]: With dead ends: 2044 [2018-08-08 06:16:51,905 INFO L226 Difference]: Without dead ends: 1799 [2018-08-08 06:16:51,907 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 291 GetRequests, 223 SyntacticMatches, 50 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2018-08-08 06:16:51,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2018-08-08 06:16:51,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1792. [2018-08-08 06:16:51,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1792 states. [2018-08-08 06:16:51,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2111 transitions. [2018-08-08 06:16:51,969 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2111 transitions. Word has length 283 [2018-08-08 06:16:51,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 06:16:51,970 INFO L480 AbstractCegarLoop]: Abstraction has 1792 states and 2111 transitions. [2018-08-08 06:16:51,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-08-08 06:16:51,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2111 transitions. [2018-08-08 06:16:51,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-08-08 06:16:51,979 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 06:16:51,979 INFO L376 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-08 06:16:51,980 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 06:16:51,980 INFO L82 PathProgramCache]: Analyzing trace with hash -27416955, now seen corresponding path program 1 times [2018-08-08 06:16:51,980 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 06:16:51,981 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 362 with the following transitions: [2018-08-08 06:16:51,981 INFO L202 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [395], [397], [400], [408], [416], [424], [432], [440], [448], [456], [464], [472], [480], [488], [493], [497], [501], [505], [509], [513], [517], [521], [524], [525], [529], [533], [537], [541], [545], [549], [553], [557], [561], [565], [569], [573], [577], [581], [585], [589], [593], [597], [601], [605], [609], [613], [617], [621], [625], [629], [633], [637], [641], [645], [649], [652], [653], [656], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-08-08 06:16:51,985 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-08-08 06:16:51,985 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 06:17:14,337 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-08-08 06:17:35,683 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 06:17:35,683 INFO L272 AbstractInterpreter]: Visited 120 different actions 710 times. Merged at 8 different actions 45 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 2 different actions. Largest state had 24 variables. [2018-08-08 06:17:35,689 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 06:17:38,124 INFO L232 lantSequenceWeakener]: Weakened 359 states. On average, predicates are now at 77.93% of their original sizes. [2018-08-08 06:17:38,124 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 06:17:38,543 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 06:17:38,543 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 06:17:38,543 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-08-08 06:17:38,544 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 06:17:38,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-08-08 06:17:38,544 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-08-08 06:17:38,544 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-08-08 06:17:38,545 INFO L87 Difference]: Start difference. First operand 1792 states and 2111 transitions. Second operand 10 states. Received shutdown request... [2018-08-08 06:17:41,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-08-08 06:17:41,581 WARN L549 AbstractCegarLoop]: Verification canceled [2018-08-08 06:17:41,588 WARN L202 ceAbstractionStarter]: Timeout [2018-08-08 06:17:41,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.08 06:17:41 BoogieIcfgContainer [2018-08-08 06:17:41,589 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-08-08 06:17:41,590 INFO L168 Benchmark]: Toolchain (without parser) took 235719.84 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 402.6 MB. Max. memory is 7.1 GB. [2018-08-08 06:17:41,592 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-08-08 06:17:41,593 INFO L168 Benchmark]: CACSL2BoogieTranslator took 868.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2018-08-08 06:17:41,593 INFO L168 Benchmark]: Boogie Procedure Inliner took 133.53 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-08-08 06:17:41,594 INFO L168 Benchmark]: Boogie Preprocessor took 292.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -881.8 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. [2018-08-08 06:17:41,595 INFO L168 Benchmark]: RCFGBuilder took 4073.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 137.9 MB). Peak memory consumption was 137.9 MB. Max. memory is 7.1 GB. [2018-08-08 06:17:41,596 INFO L168 Benchmark]: TraceAbstraction took 230346.24 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 307.1 MB. Max. memory is 7.1 GB. [2018-08-08 06:17:41,601 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 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 868.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 133.53 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 292.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -881.8 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4073.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 137.9 MB). Peak memory consumption was 137.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230346.24 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 307.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 169]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 169). Cancelled while BasicCegarLoop was constructing difference of abstraction (1792states) and FLOYD_HOARE automaton (currently 13 states, 10 states before enhancement), while ReachableStatesComputation was computing reachable states (271 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 230.2s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 59.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1217 SDtfs, 5775 SDslu, 1791 SDs, 0 SdLazy, 12625 SolverSat, 1550 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 52.8s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 1328 GetRequests, 1075 SyntacticMatches, 150 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1407 ImplicationChecksByTransitivity, 9.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1792occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 139.6s AbstIntTime, 6 AbstIntIterations, 6 AbstIntStrong, 0.9950569689547029 AbsIntWeakeningRatio, 0.107981220657277 AbsIntAvgWeakeningVarsNumRemoved, 484.1815336463224 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 208 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: No data available, 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/Problem14_label32_true-unreach-call_false-termination.c_svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-08-08_06-17-41-615.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem14_label32_true-unreach-call_false-termination.c_svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-08-08_06-17-41-615.csv Completed graceful shutdown