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/Problem11_label15_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 19:16:47,346 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 19:16:47,349 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 19:16:47,363 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 19:16:47,364 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 19:16:47,365 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 19:16:47,366 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 19:16:47,369 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 19:16:47,371 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 19:16:47,379 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 19:16:47,380 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 19:16:47,380 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 19:16:47,381 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 19:16:47,384 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 19:16:47,387 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 19:16:47,388 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 19:16:47,389 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 19:16:47,394 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 19:16:47,395 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 19:16:47,397 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 19:16:47,398 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 19:16:47,399 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 19:16:47,401 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 19:16:47,401 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 19:16:47,401 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 19:16:47,402 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 19:16:47,403 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 19:16:47,404 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 19:16:47,405 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 19:16:47,406 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 19:16:47,406 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 19:16:47,407 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 19:16:47,407 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 19:16:47,407 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 19:16:47,408 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 19:16:47,409 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 19:16:47,409 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 19:16:47,428 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 19:16:47,428 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 19:16:47,429 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 19:16:47,433 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 19:16:47,433 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 19:16:47,434 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 19:16:47,434 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 19:16:47,434 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 19:16:47,434 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 19:16:47,434 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 19:16:47,435 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 19:16:47,436 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 19:16:47,436 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 19:16:47,436 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 19:16:47,436 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 19:16:47,437 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 19:16:47,437 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 19:16:47,437 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 19:16:47,437 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 19:16:47,439 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 19:16:47,439 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 19:16:47,440 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 19:16:47,440 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 19:16:47,440 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 19:16:47,440 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 19:16:47,440 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 19:16:47,441 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 19:16:47,441 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 19:16:47,441 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 19:16:47,441 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 19:16:47,441 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 19:16:47,441 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 19:16:47,442 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 19:16:47,497 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 19:16:47,515 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 19:16:47,521 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 19:16:47,523 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 19:16:47,523 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 19:16:47,524 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label15_false-unreach-call.c [2018-07-23 19:16:47,866 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24218bd2b/0801695d2f0d407b957c1f03021c0937/FLAGed1e5124a [2018-07-23 19:16:48,253 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 19:16:48,254 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label15_false-unreach-call.c [2018-07-23 19:16:48,276 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24218bd2b/0801695d2f0d407b957c1f03021c0937/FLAGed1e5124a [2018-07-23 19:16:48,299 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24218bd2b/0801695d2f0d407b957c1f03021c0937 [2018-07-23 19:16:48,314 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 19:16:48,316 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 19:16:48,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 19:16:48,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 19:16:48,326 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 19:16:48,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 07:16:48" (1/1) ... [2018-07-23 19:16:48,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22224105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:16:48, skipping insertion in model container [2018-07-23 19:16:48,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 07:16:48" (1/1) ... [2018-07-23 19:16:48,600 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 19:16:49,100 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 19:16:49,118 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 19:16:49,281 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 19:16:49,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:16:49 WrapperNode [2018-07-23 19:16:49,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 19:16:49,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 19:16:49,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 19:16:49,398 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 19:16:49,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:16:49" (1/1) ... [2018-07-23 19:16:49,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:16:49" (1/1) ... [2018-07-23 19:16:49,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 19:16:49,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 19:16:49,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 19:16:49,575 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 19:16:49,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:16:49" (1/1) ... [2018-07-23 19:16:49,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:16:49" (1/1) ... [2018-07-23 19:16:49,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:16:49" (1/1) ... [2018-07-23 19:16:49,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:16:49" (1/1) ... [2018-07-23 19:16:49,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:16:49" (1/1) ... [2018-07-23 19:16:49,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:16:49" (1/1) ... [2018-07-23 19:16:49,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:16:49" (1/1) ... [2018-07-23 19:16:49,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 19:16:49,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 19:16:49,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 19:16:49,995 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 19:16:49,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:16:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 19:16:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 19:16:50,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 19:16:50,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 19:16:50,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 19:16:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 19:16:50,073 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 19:16:50,073 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 19:16:50,073 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 19:16:55,005 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 19:16:55,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 07:16:55 BoogieIcfgContainer [2018-07-23 19:16:55,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 19:16:55,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 19:16:55,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 19:16:55,013 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 19:16:55,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 07:16:48" (1/3) ... [2018-07-23 19:16:55,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a369ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 07:16:55, skipping insertion in model container [2018-07-23 19:16:55,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:16:49" (2/3) ... [2018-07-23 19:16:55,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a369ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 07:16:55, skipping insertion in model container [2018-07-23 19:16:55,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 07:16:55" (3/3) ... [2018-07-23 19:16:55,018 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label15_false-unreach-call.c [2018-07-23 19:16:55,029 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 19:16:55,038 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 19:16:55,100 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 19:16:55,101 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 19:16:55,102 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 19:16:55,102 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 19:16:55,102 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 19:16:55,102 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 19:16:55,102 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 19:16:55,103 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 19:16:55,103 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 19:16:55,133 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-07-23 19:16:55,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-23 19:16:55,141 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:16:55,142 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] [2018-07-23 19:16:55,143 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 19:16:55,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1270411167, now seen corresponding path program 1 times [2018-07-23 19:16:55,151 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:16:55,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:16:55,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:16:55,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:16:55,206 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:16:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:16:55,579 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-07-23 19:16:55,588 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 19:16:55,596 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:16:55,597 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 19:16:55,597 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:16:55,603 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 19:16:55,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 19:16:55,620 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 19:16:55,623 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-07-23 19:16:59,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:16:59,223 INFO L93 Difference]: Finished difference Result 998 states and 1780 transitions. [2018-07-23 19:16:59,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 19:16:59,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-07-23 19:16:59,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:16:59,250 INFO L225 Difference]: With dead ends: 998 [2018-07-23 19:16:59,251 INFO L226 Difference]: Without dead ends: 699 [2018-07-23 19:16:59,261 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 19:16:59,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2018-07-23 19:16:59,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 693. [2018-07-23 19:16:59,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2018-07-23 19:16:59,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1109 transitions. [2018-07-23 19:16:59,375 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1109 transitions. Word has length 21 [2018-07-23 19:16:59,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:16:59,375 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 1109 transitions. [2018-07-23 19:16:59,375 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 19:16:59,375 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1109 transitions. [2018-07-23 19:16:59,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-07-23 19:16:59,382 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:16:59,382 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 19:16:59,382 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 19:16:59,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1667591868, now seen corresponding path program 1 times [2018-07-23 19:16:59,383 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:16:59,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:16:59,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:16:59,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:16:59,385 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:16:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:16:59,618 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:16:59,619 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:16:59,619 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 19:16:59,619 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:16:59,621 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 19:16:59,622 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 19:16:59,622 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 19:16:59,623 INFO L87 Difference]: Start difference. First operand 693 states and 1109 transitions. Second operand 4 states. [2018-07-23 19:17:04,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:17:04,539 INFO L93 Difference]: Finished difference Result 2539 states and 4264 transitions. [2018-07-23 19:17:04,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 19:17:04,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2018-07-23 19:17:04,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:17:04,563 INFO L225 Difference]: With dead ends: 2539 [2018-07-23 19:17:04,563 INFO L226 Difference]: Without dead ends: 1852 [2018-07-23 19:17:04,572 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 19:17:04,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2018-07-23 19:17:04,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1835. [2018-07-23 19:17:04,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1835 states. [2018-07-23 19:17:04,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1835 states to 1835 states and 2830 transitions. [2018-07-23 19:17:04,673 INFO L78 Accepts]: Start accepts. Automaton has 1835 states and 2830 transitions. Word has length 95 [2018-07-23 19:17:04,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:17:04,674 INFO L471 AbstractCegarLoop]: Abstraction has 1835 states and 2830 transitions. [2018-07-23 19:17:04,674 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 19:17:04,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1835 states and 2830 transitions. [2018-07-23 19:17:04,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-23 19:17:04,686 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:17:04,687 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 19:17:04,687 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 19:17:04,687 INFO L82 PathProgramCache]: Analyzing trace with hash 134412303, now seen corresponding path program 1 times [2018-07-23 19:17:04,687 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:17:04,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:17:04,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:17:04,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:17:04,689 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:17:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:17:04,961 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:17:04,962 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:17:04,962 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 19:17:04,962 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:17:04,963 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 19:17:04,963 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 19:17:04,963 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-23 19:17:04,964 INFO L87 Difference]: Start difference. First operand 1835 states and 2830 transitions. Second operand 6 states. [2018-07-23 19:17:09,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:17:09,922 INFO L93 Difference]: Finished difference Result 7366 states and 13526 transitions. [2018-07-23 19:17:09,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-23 19:17:09,923 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2018-07-23 19:17:09,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:17:10,003 INFO L225 Difference]: With dead ends: 7366 [2018-07-23 19:17:10,003 INFO L226 Difference]: Without dead ends: 5537 [2018-07-23 19:17:10,064 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-23 19:17:10,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5537 states. [2018-07-23 19:17:10,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5537 to 4800. [2018-07-23 19:17:10,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4800 states. [2018-07-23 19:17:10,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4800 states to 4800 states and 7124 transitions. [2018-07-23 19:17:10,318 INFO L78 Accepts]: Start accepts. Automaton has 4800 states and 7124 transitions. Word has length 120 [2018-07-23 19:17:10,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:17:10,319 INFO L471 AbstractCegarLoop]: Abstraction has 4800 states and 7124 transitions. [2018-07-23 19:17:10,323 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 19:17:10,323 INFO L276 IsEmpty]: Start isEmpty. Operand 4800 states and 7124 transitions. [2018-07-23 19:17:10,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-23 19:17:10,333 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:17:10,334 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 19:17:10,334 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 19:17:10,335 INFO L82 PathProgramCache]: Analyzing trace with hash -2022124262, now seen corresponding path program 1 times [2018-07-23 19:17:10,335 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:17:10,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:17:10,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:17:10,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:17:10,336 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:17:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:17:10,705 WARN L169 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 19:17:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 28 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 19:17:11,139 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:17:11,139 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:17:11,140 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 187 with the following transitions: [2018-07-23 19:17:11,143 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [33], [41], [49], [57], [65], [73], [81], [89], [93], [95], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [519], [523], [527], [530], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [606], [1108], [1109], [1110], [1111], [1113], [1114] [2018-07-23 19:17:11,245 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:17:11,246 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:17:23,949 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 19:17:23,951 INFO L272 AbstractInterpreter]: Visited 97 different actions 97 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-07-23 19:17:23,963 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 19:17:31,313 INFO L232 lantSequenceWeakener]: Weakened 178 states. On average, predicates are now at 73.12% of their original sizes. [2018-07-23 19:17:31,314 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 19:17:31,801 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 19:17:31,802 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 19:17:31,802 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-07-23 19:17:31,802 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:17:31,803 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 19:17:31,803 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 19:17:31,803 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-23 19:17:31,804 INFO L87 Difference]: Start difference. First operand 4800 states and 7124 transitions. Second operand 7 states. [2018-07-23 19:17:59,056 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 19:18:34,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:18:34,891 INFO L93 Difference]: Finished difference Result 9786 states and 14469 transitions. [2018-07-23 19:18:34,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 19:18:34,891 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2018-07-23 19:18:34,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:18:34,928 INFO L225 Difference]: With dead ends: 9786 [2018-07-23 19:18:34,929 INFO L226 Difference]: Without dead ends: 4992 [2018-07-23 19:18:34,960 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-23 19:18:34,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4992 states. [2018-07-23 19:18:35,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4992 to 4990. [2018-07-23 19:18:35,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4990 states. [2018-07-23 19:18:35,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4990 states to 4990 states and 7324 transitions. [2018-07-23 19:18:35,134 INFO L78 Accepts]: Start accepts. Automaton has 4990 states and 7324 transitions. Word has length 186 [2018-07-23 19:18:35,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:18:35,134 INFO L471 AbstractCegarLoop]: Abstraction has 4990 states and 7324 transitions. [2018-07-23 19:18:35,135 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 19:18:35,135 INFO L276 IsEmpty]: Start isEmpty. Operand 4990 states and 7324 transitions. [2018-07-23 19:18:35,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-07-23 19:18:35,145 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:18:35,145 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:18:35,145 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 19:18:35,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1714240608, now seen corresponding path program 1 times [2018-07-23 19:18:35,146 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:18:35,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:18:35,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:18:35,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:18:35,147 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:18:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:18:35,612 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-23 19:18:35,612 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:18:35,612 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:18:35,613 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 244 with the following transitions: [2018-07-23 19:18:35,614 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [33], [41], [49], [57], [65], [73], [81], [89], [93], [95], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [650], [654], [658], [662], [666], [670], [674], [678], [682], [686], [690], [701], [712], [716], [720], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [786], [790], [793], [796], [800], [1108], [1109], [1110], [1111], [1113], [1114] [2018-07-23 19:18:35,622 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:18:35,622 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:20:34,610 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 19:20:34,611 INFO L272 AbstractInterpreter]: Visited 140 different actions 274 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-07-23 19:20:34,620 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown