java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label03_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 02:37:28,018 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 02:37:28,020 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 02:37:28,038 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 02:37:28,039 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 02:37:28,040 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 02:37:28,041 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 02:37:28,043 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 02:37:28,045 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 02:37:28,046 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 02:37:28,047 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 02:37:28,048 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 02:37:28,048 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 02:37:28,051 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 02:37:28,053 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 02:37:28,054 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 02:37:28,057 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 02:37:28,059 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 02:37:28,073 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 02:37:28,074 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 02:37:28,076 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 02:37:28,079 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 02:37:28,081 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-21 02:37:28,082 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-21 02:37:28,082 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-21 02:37:28,085 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-21 02:37:28,086 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-21 02:37:28,087 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-21 02:37:28,088 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-21 02:37:28,093 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-21 02:37:28,094 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-21 02:37:28,095 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-21 02:37:28,095 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-21 02:37:28,095 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-21 02:37:28,096 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-21 02:37:28,099 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-21 02:37:28,099 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-07-21 02:37:28,129 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 02:37:28,129 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 02:37:28,130 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 02:37:28,130 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-21 02:37:28,130 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-21 02:37:28,131 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-21 02:37:28,134 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-21 02:37:28,134 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-21 02:37:28,135 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-21 02:37:28,135 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-21 02:37:28,135 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-21 02:37:28,135 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-21 02:37:28,136 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 02:37:28,136 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 02:37:28,136 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 02:37:28,136 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 02:37:28,137 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 02:37:28,137 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 02:37:28,137 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 02:37:28,137 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 02:37:28,137 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 02:37:28,138 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 02:37:28,139 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 02:37:28,139 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 02:37:28,139 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 02:37:28,139 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 02:37:28,140 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 02:37:28,140 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 02:37:28,140 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 02:37:28,140 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-21 02:37:28,140 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 02:37:28,140 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 02:37:28,141 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 02:37:28,141 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 02:37:28,141 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-21 02:37:28,196 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 02:37:28,215 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 02:37:28,220 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 02:37:28,222 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 02:37:28,223 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 02:37:28,224 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label03_false-unreach-call.c [2018-07-21 02:37:28,633 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/1eb4d6038/2f9795e0bb47442fbbc6a0914be3998f/FLAG44fab9e26 [2018-07-21 02:37:29,187 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 02:37:29,188 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label03_false-unreach-call.c [2018-07-21 02:37:29,223 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/1eb4d6038/2f9795e0bb47442fbbc6a0914be3998f/FLAG44fab9e26 [2018-07-21 02:37:29,241 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/1eb4d6038/2f9795e0bb47442fbbc6a0914be3998f [2018-07-21 02:37:29,253 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 02:37:29,260 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 02:37:29,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 02:37:29,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 02:37:29,272 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 02:37:29,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:37:29" (1/1) ... [2018-07-21 02:37:29,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40d27a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:37:29, skipping insertion in model container [2018-07-21 02:37:29,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:37:29" (1/1) ... [2018-07-21 02:37:29,651 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 02:37:30,873 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 02:37:30,892 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 02:37:31,763 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 02:37:32,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:37:32 WrapperNode [2018-07-21 02:37:32,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 02:37:32,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 02:37:32,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 02:37:32,029 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 02:37:32,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:37:32" (1/1) ... [2018-07-21 02:37:32,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:37:32" (1/1) ... [2018-07-21 02:37:32,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 02:37:32,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 02:37:32,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 02:37:32,284 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 02:37:32,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:37:32" (1/1) ... [2018-07-21 02:37:32,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:37:32" (1/1) ... [2018-07-21 02:37:32,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:37:32" (1/1) ... [2018-07-21 02:37:32,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:37:32" (1/1) ... [2018-07-21 02:37:33,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:37:32" (1/1) ... [2018-07-21 02:37:33,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:37:32" (1/1) ... [2018-07-21 02:37:33,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:37:32" (1/1) ... [2018-07-21 02:37:33,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 02:37:33,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 02:37:33,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 02:37:33,327 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 02:37:33,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:37:32" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 02:37:33,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-21 02:37:33,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-21 02:37:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-21 02:37:33,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-21 02:37:33,405 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-21 02:37:33,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-21 02:37:33,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 02:37:33,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 02:37:33,407 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-21 02:37:33,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-21 02:37:33,408 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-21 02:37:33,408 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-21 02:37:33,408 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-21 02:37:33,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-21 02:37:44,228 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 02:37:44,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:37:44 BoogieIcfgContainer [2018-07-21 02:37:44,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 02:37:44,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 02:37:44,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 02:37:44,234 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 02:37:44,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:37:29" (1/3) ... [2018-07-21 02:37:44,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b20b138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:37:44, skipping insertion in model container [2018-07-21 02:37:44,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:37:32" (2/3) ... [2018-07-21 02:37:44,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b20b138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:37:44, skipping insertion in model container [2018-07-21 02:37:44,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:37:44" (3/3) ... [2018-07-21 02:37:44,240 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label03_false-unreach-call.c [2018-07-21 02:37:44,251 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 02:37:44,265 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 02:37:44,332 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 02:37:44,333 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 02:37:44,333 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 02:37:44,333 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 02:37:44,333 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 02:37:44,333 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 02:37:44,333 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 02:37:44,334 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 02:37:44,334 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 02:37:44,376 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-21 02:37:44,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-07-21 02:37:44,393 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 02:37:44,394 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 02:37:44,395 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 02:37:44,401 INFO L82 PathProgramCache]: Analyzing trace with hash -590350666, now seen corresponding path program 1 times [2018-07-21 02:37:44,403 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 02:37:44,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 02:37:44,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 02:37:44,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 02:37:44,463 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 02:37:44,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 02:37:44,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 02:37:44,883 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 02:37:44,883 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 02:37:44,884 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 02:37:44,893 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 02:37:44,908 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 02:37:44,909 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 02:37:44,912 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-07-21 02:37:54,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 02:37:54,083 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-07-21 02:37:54,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 02:37:54,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2018-07-21 02:37:54,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 02:37:54,120 INFO L225 Difference]: With dead ends: 2446 [2018-07-21 02:37:54,120 INFO L226 Difference]: Without dead ends: 1604 [2018-07-21 02:37:54,136 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 02:37:54,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-07-21 02:37:54,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-07-21 02:37:54,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-07-21 02:37:54,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2861 transitions. [2018-07-21 02:37:54,303 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2861 transitions. Word has length 26 [2018-07-21 02:37:54,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 02:37:54,304 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 2861 transitions. [2018-07-21 02:37:54,304 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 02:37:54,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2861 transitions. [2018-07-21 02:37:54,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-21 02:37:54,313 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 02:37:54,313 INFO L358 BasicCegarLoop]: trace histogram [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, 1] [2018-07-21 02:37:54,314 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 02:37:54,314 INFO L82 PathProgramCache]: Analyzing trace with hash -981628360, now seen corresponding path program 1 times [2018-07-21 02:37:54,314 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 02:37:54,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 02:37:54,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 02:37:54,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 02:37:54,318 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 02:37:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 02:37:54,586 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 02:37:54,587 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 02:37:54,588 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 02:37:54,588 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 02:37:54,590 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 02:37:54,590 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 02:37:54,590 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 02:37:54,591 INFO L87 Difference]: Start difference. First operand 1604 states and 2861 transitions. Second operand 4 states. [2018-07-21 02:38:08,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 02:38:08,363 INFO L93 Difference]: Finished difference Result 6274 states and 11428 transitions. [2018-07-21 02:38:08,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 02:38:08,368 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2018-07-21 02:38:08,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 02:38:08,405 INFO L225 Difference]: With dead ends: 6274 [2018-07-21 02:38:08,405 INFO L226 Difference]: Without dead ends: 4676 [2018-07-21 02:38:08,415 INFO L578 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 [2018-07-21 02:38:08,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4676 states. [2018-07-21 02:38:08,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4676 to 4676. [2018-07-21 02:38:08,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4676 states. [2018-07-21 02:38:08,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4676 states to 4676 states and 7980 transitions. [2018-07-21 02:38:08,616 INFO L78 Accepts]: Start accepts. Automaton has 4676 states and 7980 transitions. Word has length 102 [2018-07-21 02:38:08,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 02:38:08,617 INFO L471 AbstractCegarLoop]: Abstraction has 4676 states and 7980 transitions. [2018-07-21 02:38:08,617 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 02:38:08,618 INFO L276 IsEmpty]: Start isEmpty. Operand 4676 states and 7980 transitions. [2018-07-21 02:38:08,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-21 02:38:08,636 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 02:38:08,636 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 02:38:08,639 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 02:38:08,639 INFO L82 PathProgramCache]: Analyzing trace with hash -567014324, now seen corresponding path program 1 times [2018-07-21 02:38:08,639 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 02:38:08,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 02:38:08,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 02:38:08,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 02:38:08,641 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 02:38:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 02:38:09,050 WARN L169 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 02:38:09,222 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 02:38:09,222 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 02:38:09,223 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 02:38:09,224 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 02:38:09,224 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 02:38:09,225 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 02:38:09,225 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 02:38:09,225 INFO L87 Difference]: Start difference. First operand 4676 states and 7980 transitions. Second operand 6 states. [2018-07-21 02:38:19,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 02:38:19,033 INFO L93 Difference]: Finished difference Result 10982 states and 18645 transitions. [2018-07-21 02:38:19,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 02:38:19,033 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-07-21 02:38:19,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 02:38:19,085 INFO L225 Difference]: With dead ends: 10982 [2018-07-21 02:38:19,085 INFO L226 Difference]: Without dead ends: 6312 [2018-07-21 02:38:19,106 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 02:38:19,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6312 states. [2018-07-21 02:38:19,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6312 to 6292. [2018-07-21 02:38:19,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6292 states. [2018-07-21 02:38:19,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6292 states to 6292 states and 10229 transitions. [2018-07-21 02:38:19,328 INFO L78 Accepts]: Start accepts. Automaton has 6292 states and 10229 transitions. Word has length 140 [2018-07-21 02:38:19,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 02:38:19,329 INFO L471 AbstractCegarLoop]: Abstraction has 6292 states and 10229 transitions. [2018-07-21 02:38:19,329 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 02:38:19,329 INFO L276 IsEmpty]: Start isEmpty. Operand 6292 states and 10229 transitions. [2018-07-21 02:38:19,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-07-21 02:38:19,335 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 02:38:19,338 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 02:38:19,338 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 02:38:19,338 INFO L82 PathProgramCache]: Analyzing trace with hash -495455331, now seen corresponding path program 1 times [2018-07-21 02:38:19,338 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 02:38:19,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 02:38:19,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 02:38:19,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 02:38:19,340 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 02:38:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 02:38:19,682 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 02:38:19,683 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 02:38:19,683 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-21 02:38:19,683 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 02:38:19,684 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-21 02:38:19,685 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-21 02:38:19,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-21 02:38:19,686 INFO L87 Difference]: Start difference. First operand 6292 states and 10229 transitions. Second operand 5 states. [2018-07-21 02:38:32,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 02:38:32,382 INFO L93 Difference]: Finished difference Result 23831 states and 40272 transitions. [2018-07-21 02:38:32,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-21 02:38:32,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2018-07-21 02:38:32,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 02:38:32,492 INFO L225 Difference]: With dead ends: 23831 [2018-07-21 02:38:32,492 INFO L226 Difference]: Without dead ends: 17545 [2018-07-21 02:38:32,525 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-21 02:38:32,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17545 states. [2018-07-21 02:38:33,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17545 to 17383. [2018-07-21 02:38:33,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17383 states. [2018-07-21 02:38:33,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17383 states to 17383 states and 26298 transitions. [2018-07-21 02:38:33,075 INFO L78 Accepts]: Start accepts. Automaton has 17383 states and 26298 transitions. Word has length 167 [2018-07-21 02:38:33,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 02:38:33,077 INFO L471 AbstractCegarLoop]: Abstraction has 17383 states and 26298 transitions. [2018-07-21 02:38:33,077 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-21 02:38:33,077 INFO L276 IsEmpty]: Start isEmpty. Operand 17383 states and 26298 transitions. [2018-07-21 02:38:33,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-07-21 02:38:33,082 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 02:38:33,082 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 02:38:33,082 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 02:38:33,083 INFO L82 PathProgramCache]: Analyzing trace with hash -332378867, now seen corresponding path program 1 times [2018-07-21 02:38:33,083 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 02:38:33,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 02:38:33,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 02:38:33,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 02:38:33,086 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 02:38:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 02:38:33,349 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 02:38:33,349 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 02:38:33,350 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 02:38:33,350 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 02:38:33,350 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 02:38:33,351 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 02:38:33,351 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 02:38:33,351 INFO L87 Difference]: Start difference. First operand 17383 states and 26298 transitions. Second operand 4 states. [2018-07-21 02:38:43,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 02:38:43,601 INFO L93 Difference]: Finished difference Result 60371 states and 95992 transitions. [2018-07-21 02:38:43,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 02:38:43,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2018-07-21 02:38:43,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 02:38:43,784 INFO L225 Difference]: With dead ends: 60371 [2018-07-21 02:38:43,784 INFO L226 Difference]: Without dead ends: 42994 [2018-07-21 02:38:43,848 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 02:38:43,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42994 states. [2018-07-21 02:38:45,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42994 to 42986. [2018-07-21 02:38:45,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42986 states. [2018-07-21 02:38:45,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42986 states to 42986 states and 63285 transitions. [2018-07-21 02:38:45,165 INFO L78 Accepts]: Start accepts. Automaton has 42986 states and 63285 transitions. Word has length 175 [2018-07-21 02:38:45,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 02:38:45,166 INFO L471 AbstractCegarLoop]: Abstraction has 42986 states and 63285 transitions. [2018-07-21 02:38:45,166 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 02:38:45,166 INFO L276 IsEmpty]: Start isEmpty. Operand 42986 states and 63285 transitions. [2018-07-21 02:38:45,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-07-21 02:38:45,180 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 02:38:45,182 INFO L358 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 02:38:45,182 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 02:38:45,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1260197042, now seen corresponding path program 1 times [2018-07-21 02:38:45,183 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 02:38:45,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 02:38:45,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 02:38:45,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 02:38:45,184 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 02:38:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 02:38:45,581 WARN L169 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 02:38:46,493 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 39 proven. 6 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-07-21 02:38:46,494 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 02:38:46,530 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 02:38:46,531 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 217 with the following transitions: [2018-07-21 02:38:46,534 INFO L201 CegarAbsIntRunner]: [0], [1], [1871], [1875], [1881], [1885], [1887], [1892], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [1999], [2001], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2364], [2372], [2380], [2385], [2389], [2393], [2397], [2401], [2405], [2408], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2560], [3264], [3267], [3268], [3269], [3273], [3274] [2018-07-21 02:38:46,624 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 02:38:46,625 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 02:39:11,115 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 02:39:11,116 INFO L272 AbstractInterpreter]: Visited 122 different actions 240 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-07-21 02:39:11,130 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 02:39:15,356 INFO L232 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 75.24% of their original sizes. [2018-07-21 02:39:15,356 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 02:39:17,650 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 02:39:17,651 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 02:39:17,652 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [8] total 22 [2018-07-21 02:39:17,652 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 02:39:17,654 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-21 02:39:17,654 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-21 02:39:17,654 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2018-07-21 02:39:17,655 INFO L87 Difference]: Start difference. First operand 42986 states and 63285 transitions. Second operand 16 states. [2018-07-21 02:39:25,750 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown