java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label26_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 19:56:09,174 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 19:56:09,178 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 19:56:09,195 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 19:56:09,195 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 19:56:09,199 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 19:56:09,200 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 19:56:09,202 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 19:56:09,204 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 19:56:09,205 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 19:56:09,206 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 19:56:09,206 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 19:56:09,208 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 19:56:09,209 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 19:56:09,216 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 19:56:09,218 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 19:56:09,218 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 19:56:09,226 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 19:56:09,233 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 19:56:09,235 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 19:56:09,236 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 19:56:09,237 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 19:56:09,239 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 19:56:09,240 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 19:56:09,240 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 19:56:09,241 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 19:56:09,244 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 19:56:09,245 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 19:56:09,249 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 19:56:09,250 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 19:56:09,250 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 19:56:09,251 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 19:56:09,251 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 19:56:09,251 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 19:56:09,252 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 19:56:09,253 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 19:56:09,253 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf [2018-07-23 19:56:09,268 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 19:56:09,268 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 19:56:09,269 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 19:56:09,270 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 19:56:09,270 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 19:56:09,270 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 19:56:09,270 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 19:56:09,270 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 19:56:09,271 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 19:56:09,271 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 19:56:09,271 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 19:56:09,272 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 19:56:09,272 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 19:56:09,272 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 19:56:09,273 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 19:56:09,273 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 19:56:09,273 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 19:56:09,273 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 19:56:09,273 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 19:56:09,274 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 19:56:09,274 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 19:56:09,274 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 19:56:09,274 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 19:56:09,274 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 19:56:09,275 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 19:56:09,275 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 19:56:09,275 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 19:56:09,275 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 19:56:09,275 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 19:56:09,276 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 19:56:09,276 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 19:56:09,276 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 19:56:09,276 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 19:56:09,332 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 19:56:09,349 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 19:56:09,356 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 19:56:09,358 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 19:56:09,358 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 19:56:09,359 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label26_false-unreach-call.c [2018-07-23 19:56:09,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f15aba540/bb1918dc18db4521b8e5a28f3884ddbc/FLAG5edeae25f [2018-07-23 19:56:10,241 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 19:56:10,242 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label26_false-unreach-call.c [2018-07-23 19:56:10,278 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f15aba540/bb1918dc18db4521b8e5a28f3884ddbc/FLAG5edeae25f [2018-07-23 19:56:10,303 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f15aba540/bb1918dc18db4521b8e5a28f3884ddbc [2018-07-23 19:56:10,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 19:56:10,319 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 19:56:10,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 19:56:10,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 19:56:10,334 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 19:56:10,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 07:56:10" (1/1) ... [2018-07-23 19:56:10,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@536648b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:56:10, skipping insertion in model container [2018-07-23 19:56:10,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 07:56:10" (1/1) ... [2018-07-23 19:56:10,696 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 19:56:11,477 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 19:56:11,494 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 19:56:11,978 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 19:56:12,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:56:12 WrapperNode [2018-07-23 19:56:12,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 19:56:12,189 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 19:56:12,189 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 19:56:12,190 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 19:56:12,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:56:12" (1/1) ... [2018-07-23 19:56:12,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:56:12" (1/1) ... [2018-07-23 19:56:12,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 19:56:12,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 19:56:12,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 19:56:12,471 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 19:56:13,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:56:12" (1/1) ... [2018-07-23 19:56:13,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:56:12" (1/1) ... [2018-07-23 19:56:13,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:56:12" (1/1) ... [2018-07-23 19:56:13,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:56:12" (1/1) ... [2018-07-23 19:56:13,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:56:12" (1/1) ... [2018-07-23 19:56:13,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:56:12" (1/1) ... [2018-07-23 19:56:13,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:56:12" (1/1) ... [2018-07-23 19:56:13,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 19:56:13,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 19:56:13,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 19:56:13,358 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 19:56:13,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:56:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 19:56:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 19:56:13,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 19:56:13,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 19:56:13,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 19:56:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 19:56:13,422 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 19:56:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-23 19:56:13,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-23 19:56:13,422 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-23 19:56:13,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-23 19:56:26,445 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 19:56:26,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 07:56:26 BoogieIcfgContainer [2018-07-23 19:56:26,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 19:56:26,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 19:56:26,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 19:56:26,451 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 19:56:26,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 07:56:10" (1/3) ... [2018-07-23 19:56:26,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da01510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 07:56:26, skipping insertion in model container [2018-07-23 19:56:26,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:56:12" (2/3) ... [2018-07-23 19:56:26,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da01510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 07:56:26, skipping insertion in model container [2018-07-23 19:56:26,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 07:56:26" (3/3) ... [2018-07-23 19:56:26,456 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label26_false-unreach-call.c [2018-07-23 19:56:26,466 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 19:56:26,476 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 19:56:26,544 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 19:56:26,545 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 19:56:26,545 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 19:56:26,545 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 19:56:26,545 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 19:56:26,545 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 19:56:26,545 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 19:56:26,546 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 19:56:26,546 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 19:56:26,593 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-07-23 19:56:26,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-23 19:56:26,602 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:56:26,603 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:56:26,604 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:56:26,609 INFO L82 PathProgramCache]: Analyzing trace with hash -38244482, now seen corresponding path program 1 times [2018-07-23 19:56:26,611 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:56:26,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:56:26,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:56:26,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:56:26,669 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:56:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:56:27,120 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-07-23 19:56:27,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:56:27,131 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:56:27,131 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 19:56:27,132 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:56:27,139 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 19:56:27,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 19:56:27,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 19:56:27,160 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-07-23 19:56:38,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:56:38,340 INFO L93 Difference]: Finished difference Result 2133 states and 3959 transitions. [2018-07-23 19:56:38,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 19:56:38,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-07-23 19:56:38,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:56:38,374 INFO L225 Difference]: With dead ends: 2133 [2018-07-23 19:56:38,374 INFO L226 Difference]: Without dead ends: 1523 [2018-07-23 19:56:38,387 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 19:56:38,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2018-07-23 19:56:38,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1516. [2018-07-23 19:56:38,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1516 states. [2018-07-23 19:56:38,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2287 transitions. [2018-07-23 19:56:38,529 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2287 transitions. Word has length 35 [2018-07-23 19:56:38,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:56:38,530 INFO L471 AbstractCegarLoop]: Abstraction has 1516 states and 2287 transitions. [2018-07-23 19:56:38,530 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 19:56:38,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2287 transitions. [2018-07-23 19:56:38,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-23 19:56:38,537 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:56:38,538 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:56:38,538 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:56:38,540 INFO L82 PathProgramCache]: Analyzing trace with hash -430685135, now seen corresponding path program 1 times [2018-07-23 19:56:38,540 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:56:38,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:56:38,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:56:38,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:56:38,542 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:56:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:56:39,001 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:56:39,001 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:56:39,001 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:56:39,002 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 111 with the following transitions: [2018-07-23 19:56:39,005 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [735], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [914], [916], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1207], [1215], [1223], [1228], [1232], [1236], [1240], [1244], [1247], [2303], [2304], [2305], [2306], [2308], [2309] [2018-07-23 19:56:39,071 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:56:39,071 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:57:10,013 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 19:57:48,644 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 19:57:48,646 INFO L272 AbstractInterpreter]: Visited 82 different actions 233 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-07-23 19:57:48,691 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 19:57:51,352 INFO L232 lantSequenceWeakener]: Weakened 108 states. On average, predicates are now at 75.73% of their original sizes. [2018-07-23 19:57:51,352 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 19:57:53,535 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 19:57:53,536 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 19:57:53,536 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2018-07-23 19:57:53,536 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:57:53,540 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 19:57:53,540 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 19:57:53,540 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-07-23 19:57:53,541 INFO L87 Difference]: Start difference. First operand 1516 states and 2287 transitions. Second operand 11 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown