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/Problem14_label23_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 22:30:33,287 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 22:30:33,289 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 22:30:33,302 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 22:30:33,302 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 22:30:33,303 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 22:30:33,304 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 22:30:33,306 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 22:30:33,308 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 22:30:33,309 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 22:30:33,310 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 22:30:33,310 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 22:30:33,311 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 22:30:33,312 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 22:30:33,313 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 22:30:33,313 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 22:30:33,314 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 22:30:33,316 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 22:30:33,318 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 22:30:33,319 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 22:30:33,320 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 22:30:33,322 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 22:30:33,324 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 22:30:33,324 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 22:30:33,325 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 22:30:33,326 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 22:30:33,326 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 22:30:33,327 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 22:30:33,328 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 22:30:33,329 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 22:30:33,330 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 22:30:33,330 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 22:30:33,331 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 22:30:33,331 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 22:30:33,332 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 22:30:33,333 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 22:30:33,333 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 22:30:33,362 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 22:30:33,362 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 22:30:33,364 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 22:30:33,364 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 22:30:33,364 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 22:30:33,365 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 22:30:33,365 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 22:30:33,365 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 22:30:33,365 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 22:30:33,366 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 22:30:33,366 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 22:30:33,367 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 22:30:33,367 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 22:30:33,368 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 22:30:33,368 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 22:30:33,368 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 22:30:33,369 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 22:30:33,369 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 22:30:33,370 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 22:30:33,370 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 22:30:33,370 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 22:30:33,370 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 22:30:33,370 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 22:30:33,371 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 22:30:33,371 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 22:30:33,371 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 22:30:33,371 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 22:30:33,372 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 22:30:33,372 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 22:30:33,372 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 22:30:33,372 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 22:30:33,373 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 22:30:33,373 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 22:30:33,438 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 22:30:33,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 22:30:33,461 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 22:30:33,463 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 22:30:33,464 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 22:30:33,464 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label23_true-unreach-call_false-termination.c [2018-07-23 22:30:33,829 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10c7fb066/fabdadfb55e344628d4361f5ff40e053/FLAG41b0d8194 [2018-07-23 22:30:34,133 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 22:30:34,134 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label23_true-unreach-call_false-termination.c [2018-07-23 22:30:34,155 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10c7fb066/fabdadfb55e344628d4361f5ff40e053/FLAG41b0d8194 [2018-07-23 22:30:34,175 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10c7fb066/fabdadfb55e344628d4361f5ff40e053 [2018-07-23 22:30:34,186 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 22:30:34,188 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 22:30:34,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 22:30:34,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 22:30:34,200 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 22:30:34,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 10:30:34" (1/1) ... [2018-07-23 22:30:34,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b1d126a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:30:34, skipping insertion in model container [2018-07-23 22:30:34,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 10:30:34" (1/1) ... [2018-07-23 22:30:34,423 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 22:30:34,724 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 22:30:34,741 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 22:30:34,939 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 22:30:35,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:30:35 WrapperNode [2018-07-23 22:30:35,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 22:30:35,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 22:30:35,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 22:30:35,004 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 22:30:35,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:30:35" (1/1) ... [2018-07-23 22:30:35,056 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:30:35" (1/1) ... [2018-07-23 22:30:35,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 22:30:35,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 22:30:35,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 22:30:35,134 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 22:30:35,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:30:35" (1/1) ... [2018-07-23 22:30:35,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:30:35" (1/1) ... [2018-07-23 22:30:35,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:30:35" (1/1) ... [2018-07-23 22:30:35,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:30:35" (1/1) ... [2018-07-23 22:30:35,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:30:35" (1/1) ... [2018-07-23 22:30:35,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:30:35" (1/1) ... [2018-07-23 22:30:35,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:30:35" (1/1) ... [2018-07-23 22:30:35,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 22:30:35,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 22:30:35,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 22:30:35,445 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 22:30:35,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:30:35" (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 22:30:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-23 22:30:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-23 22:30:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 22:30:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 22:30:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 22:30:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 22:30:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 22:30:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 22:30:39,379 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 22:30:39,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 10:30:39 BoogieIcfgContainer [2018-07-23 22:30:39,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 22:30:39,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 22:30:39,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 22:30:39,386 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 22:30:39,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 10:30:34" (1/3) ... [2018-07-23 22:30:39,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8b2fdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 10:30:39, skipping insertion in model container [2018-07-23 22:30:39,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:30:35" (2/3) ... [2018-07-23 22:30:39,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8b2fdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 10:30:39, skipping insertion in model container [2018-07-23 22:30:39,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 10:30:39" (3/3) ... [2018-07-23 22:30:39,391 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label23_true-unreach-call_false-termination.c [2018-07-23 22:30:39,402 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 22:30:39,413 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 22:30:39,466 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 22:30:39,467 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 22:30:39,467 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 22:30:39,467 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 22:30:39,468 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 22:30:39,468 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 22:30:39,468 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 22:30:39,468 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 22:30:39,468 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 22:30:39,496 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-07-23 22:30:39,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-07-23 22:30:39,506 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:30:39,507 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, 1, 1, 1, 1] [2018-07-23 22:30:39,508 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:30:39,514 INFO L82 PathProgramCache]: Analyzing trace with hash -845601649, now seen corresponding path program 1 times [2018-07-23 22:30:39,517 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:30:39,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:30:39,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:30:39,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:30:39,570 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:30:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:30:39,958 WARN L169 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 22:30:39,984 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 22:30:39,987 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:30:39,988 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 22:30:39,988 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:30:39,996 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 22:30:40,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 22:30:40,010 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 22:30:40,013 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-07-23 22:30:41,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:30:41,943 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-07-23 22:30:41,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 22:30:41,946 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2018-07-23 22:30:41,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:30:41,970 INFO L225 Difference]: With dead ends: 691 [2018-07-23 22:30:41,970 INFO L226 Difference]: Without dead ends: 434 [2018-07-23 22:30:41,979 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 22:30:42,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-07-23 22:30:42,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-07-23 22:30:42,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-07-23 22:30:42,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 773 transitions. [2018-07-23 22:30:42,082 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 773 transitions. Word has length 39 [2018-07-23 22:30:42,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:30:42,083 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 773 transitions. [2018-07-23 22:30:42,083 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 22:30:42,084 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 773 transitions. [2018-07-23 22:30:42,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-07-23 22:30:42,096 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:30:42,096 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, 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] [2018-07-23 22:30:42,097 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:30:42,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1315087714, now seen corresponding path program 1 times [2018-07-23 22:30:42,099 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:30:42,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:30:42,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:30:42,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:30:42,102 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:30:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:30:42,605 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:30:42,606 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:30:42,606 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 22:30:42,606 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:30:42,608 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 22:30:42,609 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 22:30:42,609 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-23 22:30:42,609 INFO L87 Difference]: Start difference. First operand 434 states and 773 transitions. Second operand 6 states. [2018-07-23 22:30:48,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:30:48,111 INFO L93 Difference]: Finished difference Result 1611 states and 2994 transitions. [2018-07-23 22:30:48,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 22:30:48,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-07-23 22:30:48,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:30:48,127 INFO L225 Difference]: With dead ends: 1611 [2018-07-23 22:30:48,127 INFO L226 Difference]: Without dead ends: 1183 [2018-07-23 22:30:48,132 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-23 22:30:48,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2018-07-23 22:30:48,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1141. [2018-07-23 22:30:48,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1141 states. [2018-07-23 22:30:48,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1837 transitions. [2018-07-23 22:30:48,234 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1837 transitions. Word has length 121 [2018-07-23 22:30:48,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:30:48,235 INFO L471 AbstractCegarLoop]: Abstraction has 1141 states and 1837 transitions. [2018-07-23 22:30:48,235 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 22:30:48,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1837 transitions. [2018-07-23 22:30:48,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-23 22:30:48,241 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:30:48,241 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, 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] [2018-07-23 22:30:48,242 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:30:48,242 INFO L82 PathProgramCache]: Analyzing trace with hash -964601082, now seen corresponding path program 1 times [2018-07-23 22:30:48,242 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:30:48,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:30:48,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:30:48,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:30:48,247 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:30:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:30:48,661 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:30:48,662 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:30:48,663 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 22:30:48,663 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:30:48,663 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 22:30:48,664 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 22:30:48,664 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-07-23 22:30:48,664 INFO L87 Difference]: Start difference. First operand 1141 states and 1837 transitions. Second operand 6 states. [2018-07-23 22:30:53,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:30:53,158 INFO L93 Difference]: Finished difference Result 2741 states and 4359 transitions. [2018-07-23 22:30:53,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 22:30:53,163 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-07-23 22:30:53,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:30:53,179 INFO L225 Difference]: With dead ends: 2741 [2018-07-23 22:30:53,179 INFO L226 Difference]: Without dead ends: 1606 [2018-07-23 22:30:53,184 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-23 22:30:53,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2018-07-23 22:30:53,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1532. [2018-07-23 22:30:53,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1532 states. [2018-07-23 22:30:53,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 2338 transitions. [2018-07-23 22:30:53,267 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 2338 transitions. Word has length 123 [2018-07-23 22:30:53,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:30:53,268 INFO L471 AbstractCegarLoop]: Abstraction has 1532 states and 2338 transitions. [2018-07-23 22:30:53,268 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 22:30:53,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 2338 transitions. [2018-07-23 22:30:53,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-23 22:30:53,277 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:30:53,277 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, 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] [2018-07-23 22:30:53,277 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:30:53,278 INFO L82 PathProgramCache]: Analyzing trace with hash 906649879, now seen corresponding path program 1 times [2018-07-23 22:30:53,278 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:30:53,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:30:53,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:30:53,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:30:53,281 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:30:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:30:53,571 WARN L169 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-07-23 22:30:53,619 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:30:53,619 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:30:53,619 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 22:30:53,620 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:30:53,620 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 22:30:53,621 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 22:30:53,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 22:30:53,621 INFO L87 Difference]: Start difference. First operand 1532 states and 2338 transitions. Second operand 4 states. [2018-07-23 22:30:55,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:30:55,233 INFO L93 Difference]: Finished difference Result 3727 states and 6014 transitions. [2018-07-23 22:30:55,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 22:30:55,237 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2018-07-23 22:30:55,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:30:55,255 INFO L225 Difference]: With dead ends: 3727 [2018-07-23 22:30:55,255 INFO L226 Difference]: Without dead ends: 2201 [2018-07-23 22:30:55,264 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 22:30:55,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2201 states. [2018-07-23 22:30:55,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2201 to 2197. [2018-07-23 22:30:55,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2197 states. [2018-07-23 22:30:55,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2197 states to 2197 states and 3522 transitions. [2018-07-23 22:30:55,348 INFO L78 Accepts]: Start accepts. Automaton has 2197 states and 3522 transitions. Word has length 150 [2018-07-23 22:30:55,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:30:55,348 INFO L471 AbstractCegarLoop]: Abstraction has 2197 states and 3522 transitions. [2018-07-23 22:30:55,349 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 22:30:55,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2197 states and 3522 transitions. [2018-07-23 22:30:55,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-07-23 22:30:55,357 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:30:55,357 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 22:30:55,358 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:30:55,358 INFO L82 PathProgramCache]: Analyzing trace with hash -491137199, now seen corresponding path program 1 times [2018-07-23 22:30:55,358 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:30:55,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:30:55,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:30:55,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:30:55,360 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:30:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:30:56,180 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 113 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:30:56,180 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 22:30:56,180 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 22:30:56,182 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 234 with the following transitions: [2018-07-23 22:30:56,184 INFO L201 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [211], [213], [216], [224], [232], [240], [248], [256], [264], [272], [280], [288], [296], [304], [312], [320], [328], [336], [344], [352], [360], [368], [376], [384], [392], [400], [408], [416], [424], [432], [440], [448], [456], [464], [472], [480], [488], [493], [497], [501], [505], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [548], [549], [553], [557], [561], [565], [569], [573], [577], [581], [585], [589], [593], [597], [601], [605], [609], [613], [617], [621], [625], [629], [633], [637], [641], [645], [649], [652], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-07-23 22:30:56,256 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 22:30:56,256 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 22:31:01,787 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 22:31:01,789 INFO L272 AbstractInterpreter]: Visited 115 different actions 115 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-07-23 22:31:01,804 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 22:31:05,965 INFO L232 lantSequenceWeakener]: Weakened 225 states. On average, predicates are now at 77.78% of their original sizes. [2018-07-23 22:31:05,965 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 22:31:06,445 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 22:31:06,446 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 22:31:06,446 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2018-07-23 22:31:06,446 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:31:06,449 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 22:31:06,449 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 22:31:06,449 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-23 22:31:06,450 INFO L87 Difference]: Start difference. First operand 2197 states and 3522 transitions. Second operand 7 states. [2018-07-23 22:31:16,021 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 22:31:24,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:31:24,875 INFO L93 Difference]: Finished difference Result 4573 states and 7269 transitions. [2018-07-23 22:31:24,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 22:31:24,875 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2018-07-23 22:31:24,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:31:24,889 INFO L225 Difference]: With dead ends: 4573 [2018-07-23 22:31:24,889 INFO L226 Difference]: Without dead ends: 2382 [2018-07-23 22:31:24,898 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 233 GetRequests, 227 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 22:31:24,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2382 states. [2018-07-23 22:31:24,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2382 to 2380. [2018-07-23 22:31:24,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2380 states. [2018-07-23 22:31:24,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 3713 transitions. [2018-07-23 22:31:24,969 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 3713 transitions. Word has length 233 [2018-07-23 22:31:24,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:31:24,969 INFO L471 AbstractCegarLoop]: Abstraction has 2380 states and 3713 transitions. [2018-07-23 22:31:24,969 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 22:31:24,970 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 3713 transitions. [2018-07-23 22:31:24,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-23 22:31:24,979 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:31:24,979 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:24,979 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:31:24,980 INFO L82 PathProgramCache]: Analyzing trace with hash -666951355, now seen corresponding path program 1 times [2018-07-23 22:31:24,980 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:31:24,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:31:24,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:31:24,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:31:24,982 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:31:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:31:25,637 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 184 proven. 83 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-07-23 22:31:25,638 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 22:31:25,638 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 22:31:25,638 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 319 with the following transitions: [2018-07-23 22:31:25,640 INFO L201 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [211], [213], [216], [224], [232], [240], [248], [256], [264], [272], [280], [288], [296], [304], [312], [320], [328], [336], [344], [352], [360], [368], [376], [384], [392], [400], [408], [416], [424], [432], [440], [448], [456], [464], [472], [480], [488], [493], [497], [501], [505], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [548], [549], [552], [553], [557], [561], [565], [569], [573], [577], [581], [585], [589], [593], [597], [601], [605], [609], [613], [617], [621], [625], [629], [633], [637], [641], [645], [649], [652], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-07-23 22:31:25,648 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 22:31:25,649 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 22:31:40,796 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 22:31:40,796 INFO L272 AbstractInterpreter]: Visited 119 different actions 231 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-07-23 22:31:40,806 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 22:31:49,584 INFO L232 lantSequenceWeakener]: Weakened 316 states. On average, predicates are now at 77.71% of their original sizes. [2018-07-23 22:31:49,585 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 22:31:51,429 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 22:31:51,429 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 22:31:51,430 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-07-23 22:31:51,430 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:31:51,430 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 22:31:51,431 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 22:31:51,431 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-07-23 22:31:51,431 INFO L87 Difference]: Start difference. First operand 2380 states and 3713 transitions. Second operand 11 states. [2018-07-23 22:32:31,928 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 22:32:53,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:32:53,130 INFO L93 Difference]: Finished difference Result 4943 states and 7693 transitions. [2018-07-23 22:32:53,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 22:32:53,130 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 318 [2018-07-23 22:32:53,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:32:53,144 INFO L225 Difference]: With dead ends: 4943 [2018-07-23 22:32:53,144 INFO L226 Difference]: Without dead ends: 2752 [2018-07-23 22:32:53,153 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 324 GetRequests, 281 SyntacticMatches, 27 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-07-23 22:32:53,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2018-07-23 22:32:53,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 2749. [2018-07-23 22:32:53,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2749 states. [2018-07-23 22:32:53,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 4099 transitions. [2018-07-23 22:32:53,232 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 4099 transitions. Word has length 318 [2018-07-23 22:32:53,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:32:53,232 INFO L471 AbstractCegarLoop]: Abstraction has 2749 states and 4099 transitions. [2018-07-23 22:32:53,233 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 22:32:53,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 4099 transitions. [2018-07-23 22:32:53,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-07-23 22:32:53,242 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:32:53,242 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 22:32:53,242 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:32:53,243 INFO L82 PathProgramCache]: Analyzing trace with hash -964341287, now seen corresponding path program 1 times [2018-07-23 22:32:53,243 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:32:53,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:32:53,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:32:53,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:32:53,244 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:32:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:32:54,028 WARN L169 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-23 22:32:54,263 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 265 proven. 2 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-07-23 22:32:54,263 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 22:32:54,263 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 22:32:54,264 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 345 with the following transitions: [2018-07-23 22:32:54,264 INFO L201 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [211], [213], [216], [224], [232], [240], [248], [256], [264], [272], [280], [288], [296], [304], [312], [320], [328], [336], [344], [352], [360], [368], [376], [384], [392], [400], [408], [416], [424], [432], [440], [448], [456], [464], [472], [480], [488], [493], [497], [501], [505], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [548], [549], [553], [557], [561], [565], [569], [573], [577], [581], [585], [589], [593], [597], [601], [605], [609], [613], [617], [621], [625], [629], [633], [637], [641], [645], [649], [652], [653], [656], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-07-23 22:32:54,268 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 22:32:54,269 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 22:33:16,648 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 22:33:30,338 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 22:33:30,339 INFO L272 AbstractInterpreter]: Visited 120 different actions 469 times. Merged at 7 different actions 22 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-07-23 22:33:30,349 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 22:33:34,726 INFO L232 lantSequenceWeakener]: Weakened 342 states. On average, predicates are now at 77.67% of their original sizes. [2018-07-23 22:33:34,726 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 22:33:35,857 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 22:33:35,858 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 22:33:35,858 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2018-07-23 22:33:35,858 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:33:35,859 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 22:33:35,859 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 22:33:35,859 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-07-23 22:33:35,860 INFO L87 Difference]: Start difference. First operand 2749 states and 4099 transitions. Second operand 11 states. [2018-07-23 22:34:11,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:34:11,558 INFO L93 Difference]: Finished difference Result 5505 states and 8567 transitions. [2018-07-23 22:34:11,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-07-23 22:34:11,558 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 344 [2018-07-23 22:34:11,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:34:11,575 INFO L225 Difference]: With dead ends: 5505 [2018-07-23 22:34:11,575 INFO L226 Difference]: Without dead ends: 3314 [2018-07-23 22:34:11,583 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 352 GetRequests, 307 SyntacticMatches, 27 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2018-07-23 22:34:11,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3314 states. [2018-07-23 22:34:11,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3314 to 3121. [2018-07-23 22:34:11,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3121 states. [2018-07-23 22:34:11,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 4525 transitions. [2018-07-23 22:34:11,686 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 4525 transitions. Word has length 344 [2018-07-23 22:34:11,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:34:11,687 INFO L471 AbstractCegarLoop]: Abstraction has 3121 states and 4525 transitions. [2018-07-23 22:34:11,687 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 22:34:11,687 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 4525 transitions. [2018-07-23 22:34:11,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-07-23 22:34:11,700 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:34:11,701 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 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] [2018-07-23 22:34:11,701 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:34:11,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1426060180, now seen corresponding path program 1 times [2018-07-23 22:34:11,701 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:34:11,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:34:11,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:34:11,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:34:11,703 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:34:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:34:12,279 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 303 proven. 81 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2018-07-23 22:34:12,280 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 22:34:12,280 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 22:34:12,280 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 427 with the following transitions: [2018-07-23 22:34:12,281 INFO L201 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [211], [213], [216], [224], [232], [240], [248], [256], [264], [272], [280], [288], [296], [304], [312], [320], [328], [336], [344], [352], [360], [368], [376], [384], [392], [400], [408], [416], [424], [432], [440], [448], [456], [464], [472], [480], [488], [493], [497], [501], [505], [509], [513], [517], [521], [525], [529], [533], [537], [540], [541], [545], [548], [549], [553], [557], [561], [565], [569], [573], [577], [581], [585], [589], [593], [597], [601], [605], [609], [613], [617], [621], [625], [629], [633], [637], [641], [645], [649], [652], [653], [656], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-07-23 22:34:12,285 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 22:34:12,285 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-07-23 22:34:32,356 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-07-23 22:34:32,357 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-07-23 22:34:32,358 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 22:34:32,358 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 22:34:32,358 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 22:34:32,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:34:32,368 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 22:34:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:34:32,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 22:34:32,598 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-23 22:34:32,800 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 22:34:32,800 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 22:34:32,806 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 22:34:32,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 10:34:32 BoogieIcfgContainer [2018-07-23 22:34:32,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 22:34:32,808 INFO L168 Benchmark]: Toolchain (without parser) took 238620.71 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 725.1 MB. Max. memory is 7.1 GB. [2018-07-23 22:34:32,809 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 22:34:32,809 INFO L168 Benchmark]: CACSL2BoogieTranslator took 810.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-07-23 22:34:32,810 INFO L168 Benchmark]: Boogie Procedure Inliner took 129.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 22:34:32,811 INFO L168 Benchmark]: Boogie Preprocessor took 311.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -873.0 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. [2018-07-23 22:34:32,812 INFO L168 Benchmark]: RCFGBuilder took 3935.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 142.3 MB). Peak memory consumption was 142.3 MB. Max. memory is 7.1 GB. [2018-07-23 22:34:32,812 INFO L168 Benchmark]: TraceAbstraction took 233425.33 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 3.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 622.7 MB. Max. memory is 7.1 GB. [2018-07-23 22:34:32,817 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 810.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 129.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 311.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -873.0 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3935.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 142.3 MB). Peak memory consumption was 142.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233425.33 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 3.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 622.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 100). Cancelled while BasicCegarLoop was analyzing trace of length 427 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 7 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 233.3s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 129.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1044 SDtfs, 5450 SDslu, 826 SDs, 0 SdLazy, 6760 SolverSat, 1601 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 88.9s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 941 GetRequests, 825 SyntacticMatches, 58 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3121occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 76.9s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.9956517677260023 AbsIntWeakeningRatio, 0.10089686098654709 AbsIntAvgWeakeningVarsNumRemoved, 245.0605381165919 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 318 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 1328 NumberOfCodeBlocks, 1328 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1321 ConstructedInterpolants, 0 QuantifiedInterpolants, 1600766 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 847/967 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem14_label23_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_22-34-32-832.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem14_label23_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_22-34-32-832.csv Completed graceful shutdown