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/Problem19_label58_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 20:13:19,233 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 20:13:19,235 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 20:13:19,248 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 20:13:19,248 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 20:13:19,249 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 20:13:19,251 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 20:13:19,258 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 20:13:19,260 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 20:13:19,260 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 20:13:19,261 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 20:13:19,262 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 20:13:19,262 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 20:13:19,266 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 20:13:19,267 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 20:13:19,268 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 20:13:19,271 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 20:13:19,278 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 20:13:19,281 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 20:13:19,286 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 20:13:19,287 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 20:13:19,288 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 20:13:19,295 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 20:13:19,296 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 20:13:19,296 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 20:13:19,298 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 20:13:19,299 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 20:13:19,299 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 20:13:19,300 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 20:13:19,306 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 20:13:19,306 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 20:13:19,307 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 20:13:19,307 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 20:13:19,307 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 20:13:19,309 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 20:13:19,310 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 20:13:19,311 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 20:13:19,341 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 20:13:19,341 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 20:13:19,342 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 20:13:19,343 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 20:13:19,343 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 20:13:19,343 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 20:13:19,344 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 20:13:19,344 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 20:13:19,344 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 20:13:19,344 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 20:13:19,344 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 20:13:19,345 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 20:13:19,346 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 20:13:19,347 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 20:13:19,347 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 20:13:19,347 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 20:13:19,347 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 20:13:19,347 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 20:13:19,348 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 20:13:19,348 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 20:13:19,348 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 20:13:19,348 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 20:13:19,350 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 20:13:19,350 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 20:13:19,350 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 20:13:19,350 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 20:13:19,350 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 20:13:19,351 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 20:13:19,351 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 20:13:19,351 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 20:13:19,352 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 20:13:19,352 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 20:13:19,352 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 20:13:19,407 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 20:13:19,419 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 20:13:19,422 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 20:13:19,424 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 20:13:19,424 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 20:13:19,425 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label58_false-unreach-call.c [2018-07-23 20:13:19,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1783e45ff/c033358503444d41af22fb659497ef4c/FLAG83f80e803 [2018-07-23 20:13:20,322 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 20:13:20,322 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label58_false-unreach-call.c [2018-07-23 20:13:20,368 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1783e45ff/c033358503444d41af22fb659497ef4c/FLAG83f80e803 [2018-07-23 20:13:20,384 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1783e45ff/c033358503444d41af22fb659497ef4c [2018-07-23 20:13:20,395 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 20:13:20,397 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 20:13:20,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 20:13:20,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 20:13:20,405 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 20:13:20,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:13:20" (1/1) ... [2018-07-23 20:13:20,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73387c49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:20, skipping insertion in model container [2018-07-23 20:13:20,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:13:20" (1/1) ... [2018-07-23 20:13:20,870 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 20:13:22,933 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:13:22,954 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 20:13:24,230 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:13:24,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:24 WrapperNode [2018-07-23 20:13:24,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 20:13:24,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 20:13:24,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 20:13:24,896 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 20:13:24,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:24" (1/1) ... [2018-07-23 20:13:25,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:24" (1/1) ... [2018-07-23 20:13:25,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 20:13:25,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 20:13:25,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 20:13:25,181 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 20:13:26,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:24" (1/1) ... [2018-07-23 20:13:26,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:24" (1/1) ... [2018-07-23 20:13:26,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:24" (1/1) ... [2018-07-23 20:13:26,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:24" (1/1) ... [2018-07-23 20:13:26,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:24" (1/1) ... [2018-07-23 20:13:26,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:24" (1/1) ... [2018-07-23 20:13:27,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:24" (1/1) ... [2018-07-23 20:13:27,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 20:13:27,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 20:13:27,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 20:13:27,386 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 20:13:27,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:24" (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 20:13:27,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 20:13:27,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 20:13:27,458 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_output4 [2018-07-23 20:13:27,459 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_output4 [2018-07-23 20:13:27,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 20:13:27,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 20:13:27,459 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_output5 [2018-07-23 20:13:27,459 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_output5 [2018-07-23 20:13:27,459 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 20:13:27,460 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 20:13:27,460 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 20:13:27,460 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 20:13:27,460 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_output3 [2018-07-23 20:13:27,460 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_output3 [2018-07-23 20:13:27,461 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_output6 [2018-07-23 20:13:27,461 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_output6 [2018-07-23 20:13:27,462 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 20:13:27,462 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 20:13:46,198 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 20:13:46,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:13:46 BoogieIcfgContainer [2018-07-23 20:13:46,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 20:13:46,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 20:13:46,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 20:13:46,210 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 20:13:46,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 08:13:20" (1/3) ... [2018-07-23 20:13:46,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595542ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:13:46, skipping insertion in model container [2018-07-23 20:13:46,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:13:24" (2/3) ... [2018-07-23 20:13:46,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595542ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:13:46, skipping insertion in model container [2018-07-23 20:13:46,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:13:46" (3/3) ... [2018-07-23 20:13:46,215 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label58_false-unreach-call.c [2018-07-23 20:13:46,224 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 20:13:46,234 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 20:13:46,303 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 20:13:46,304 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 20:13:46,304 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 20:13:46,304 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 20:13:46,304 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 20:13:46,304 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 20:13:46,305 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 20:13:46,305 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 20:13:46,305 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 20:13:46,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-07-23 20:13:46,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 20:13:46,367 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:13:46,368 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] [2018-07-23 20:13:46,368 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 20:13:46,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1768995870, now seen corresponding path program 1 times [2018-07-23 20:13:46,376 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:13:46,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:13:46,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:13:46,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:13:46,422 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:13:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:13:46,750 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-07-23 20:13:46,763 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 20:13:46,766 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:13:46,766 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 20:13:46,766 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:13:46,779 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 20:13:46,810 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 20:13:46,811 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 20:13:46,818 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-07-23 20:14:13,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:14:13,677 INFO L93 Difference]: Finished difference Result 6513 states and 12383 transitions. [2018-07-23 20:14:13,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 20:14:13,680 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-07-23 20:14:13,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:14:13,740 INFO L225 Difference]: With dead ends: 6513 [2018-07-23 20:14:13,740 INFO L226 Difference]: Without dead ends: 4729 [2018-07-23 20:14:13,755 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 20:14:13,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4729 states. [2018-07-23 20:14:13,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4729 to 4693. [2018-07-23 20:14:13,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2018-07-23 20:14:13,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 7735 transitions. [2018-07-23 20:14:13,988 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 7735 transitions. Word has length 20 [2018-07-23 20:14:13,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:14:13,989 INFO L471 AbstractCegarLoop]: Abstraction has 4693 states and 7735 transitions. [2018-07-23 20:14:13,989 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 20:14:13,990 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 7735 transitions. [2018-07-23 20:14:13,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-07-23 20:14:13,995 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:14:13,995 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 20:14:13,996 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 20:14:13,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1248360333, now seen corresponding path program 1 times [2018-07-23 20:14:13,996 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:14:13,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:14:13,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:14:13,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:14:13,998 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:14:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:14:14,393 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:14:14,394 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:14:14,394 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 20:14:14,394 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:14:14,396 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 20:14:14,397 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 20:14:14,397 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 20:14:14,397 INFO L87 Difference]: Start difference. First operand 4693 states and 7735 transitions. Second operand 6 states. [2018-07-23 20:14:47,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:14:47,121 INFO L93 Difference]: Finished difference Result 17886 states and 30173 transitions. [2018-07-23 20:14:47,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 20:14:47,125 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2018-07-23 20:14:47,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:14:47,190 INFO L225 Difference]: With dead ends: 17886 [2018-07-23 20:14:47,190 INFO L226 Difference]: Without dead ends: 13199 [2018-07-23 20:14:47,211 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 20:14:47,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13199 states. [2018-07-23 20:14:47,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13199 to 13130. [2018-07-23 20:14:47,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13130 states. [2018-07-23 20:14:47,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13130 states to 13130 states and 19369 transitions. [2018-07-23 20:14:47,526 INFO L78 Accepts]: Start accepts. Automaton has 13130 states and 19369 transitions. Word has length 92 [2018-07-23 20:14:47,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:14:47,527 INFO L471 AbstractCegarLoop]: Abstraction has 13130 states and 19369 transitions. [2018-07-23 20:14:47,527 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 20:14:47,527 INFO L276 IsEmpty]: Start isEmpty. Operand 13130 states and 19369 transitions. [2018-07-23 20:14:47,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-23 20:14:47,531 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:14:47,531 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 20:14:47,531 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:14:47,531 INFO L82 PathProgramCache]: Analyzing trace with hash 700784817, now seen corresponding path program 1 times [2018-07-23 20:14:47,532 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:14:47,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:14:47,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:14:47,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:14:47,533 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:14:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:14:47,837 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:14:47,837 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:14:47,838 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 20:14:47,838 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:14:47,839 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 20:14:47,839 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 20:14:47,840 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 20:14:47,840 INFO L87 Difference]: Start difference. First operand 13130 states and 19369 transitions. Second operand 5 states. [2018-07-23 20:15:16,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:15:16,702 INFO L93 Difference]: Finished difference Result 39890 states and 60205 transitions. [2018-07-23 20:15:16,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 20:15:16,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2018-07-23 20:15:16,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:15:16,813 INFO L225 Difference]: With dead ends: 39890 [2018-07-23 20:15:16,813 INFO L226 Difference]: Without dead ends: 26766 [2018-07-23 20:15:16,857 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-23 20:15:16,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26766 states. [2018-07-23 20:15:17,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26766 to 26535. [2018-07-23 20:15:17,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26535 states. [2018-07-23 20:15:17,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26535 states to 26535 states and 38646 transitions. [2018-07-23 20:15:17,480 INFO L78 Accepts]: Start accepts. Automaton has 26535 states and 38646 transitions. Word has length 102 [2018-07-23 20:15:17,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:15:17,481 INFO L471 AbstractCegarLoop]: Abstraction has 26535 states and 38646 transitions. [2018-07-23 20:15:17,481 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 20:15:17,482 INFO L276 IsEmpty]: Start isEmpty. Operand 26535 states and 38646 transitions. [2018-07-23 20:15:17,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-23 20:15:17,494 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:15:17,495 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 20:15:17,495 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:15:17,495 INFO L82 PathProgramCache]: Analyzing trace with hash 690344085, now seen corresponding path program 1 times [2018-07-23 20:15:17,496 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:15:17,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:15:17,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:15:17,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:15:17,500 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:15:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:15:18,009 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:15:18,010 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:15:18,010 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 20:15:18,010 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:15:18,011 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 20:15:18,011 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 20:15:18,011 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-23 20:15:18,013 INFO L87 Difference]: Start difference. First operand 26535 states and 38646 transitions. Second operand 6 states. [2018-07-23 20:16:09,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:16:09,905 INFO L93 Difference]: Finished difference Result 92625 states and 145418 transitions. [2018-07-23 20:16:09,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 20:16:09,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-07-23 20:16:09,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:16:10,189 INFO L225 Difference]: With dead ends: 92625 [2018-07-23 20:16:10,189 INFO L226 Difference]: Without dead ends: 66096 [2018-07-23 20:16:10,289 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-23 20:16:10,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66096 states. [2018-07-23 20:16:11,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66096 to 65817. [2018-07-23 20:16:11,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65817 states. [2018-07-23 20:16:12,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65817 states to 65817 states and 89128 transitions. [2018-07-23 20:16:12,160 INFO L78 Accepts]: Start accepts. Automaton has 65817 states and 89128 transitions. Word has length 135 [2018-07-23 20:16:12,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:16:12,161 INFO L471 AbstractCegarLoop]: Abstraction has 65817 states and 89128 transitions. [2018-07-23 20:16:12,161 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 20:16:12,161 INFO L276 IsEmpty]: Start isEmpty. Operand 65817 states and 89128 transitions. [2018-07-23 20:16:12,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-23 20:16:12,166 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:16:12,166 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 20:16:12,166 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:16:12,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1683288074, now seen corresponding path program 1 times [2018-07-23 20:16:12,167 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:16:12,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:16:12,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:16:12,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:16:12,172 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:16:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:16:12,447 WARN L169 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:16:12,631 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 26 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 20:16:12,631 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:16:12,632 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:16:12,632 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 192 with the following transitions: [2018-07-23 20:16:12,634 INFO L201 CegarAbsIntRunner]: [0], [1], [2158], [2162], [2168], [2172], [2174], [5251], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5310], [5312], [5315], [5323], [5331], [5339], [5347], [5355], [5363], [5371], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5723], [5731], [5739], [5743], [5746], [5750], [5751], [5755], [5766], [5770], [5774], [5778], [5782], [5786], [5790], [5794], [5798], [5802], [5806], [5810], [5821], [5832], [5843], [5847], [5851], [5862], [5866], [5870], [5874], [5878], [5882], [5886], [5890], [5894], [5898], [5901], [6826], [6829], [6830], [6831], [6835], [6836] [2018-07-23 20:16:12,720 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:16:12,720 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 20:16:19,427 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 20:16:19,429 INFO L272 AbstractInterpreter]: Visited 104 different actions 104 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-07-23 20:16:19,466 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 20:16:22,522 INFO L232 lantSequenceWeakener]: Weakened 181 states. On average, predicates are now at 75.09% of their original sizes. [2018-07-23 20:16:22,523 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 20:16:22,969 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 20:16:22,970 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 20:16:22,971 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-07-23 20:16:22,971 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:16:22,972 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 20:16:22,972 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 20:16:22,972 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-23 20:16:22,972 INFO L87 Difference]: Start difference. First operand 65817 states and 89128 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown