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_label04_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 22:27:53,451 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 22:27:53,457 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 22:27:53,476 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 22:27:53,476 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 22:27:53,477 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 22:27:53,479 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 22:27:53,483 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 22:27:53,487 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 22:27:53,488 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 22:27:53,490 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 22:27:53,490 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 22:27:53,491 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 22:27:53,493 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 22:27:53,495 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 22:27:53,499 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 22:27:53,500 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 22:27:53,509 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 22:27:53,515 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 22:27:53,519 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 22:27:53,520 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 22:27:53,524 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 22:27:53,529 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 22:27:53,529 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 22:27:53,529 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 22:27:53,531 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 22:27:53,532 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 22:27:53,533 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 22:27:53,536 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 22:27:53,540 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 22:27:53,541 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 22:27:53,541 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 22:27:53,542 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 22:27:53,542 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 22:27:53,544 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 22:27:53,546 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 22:27:53,546 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 22:27:53,578 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 22:27:53,579 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 22:27:53,579 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 22:27:53,580 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 22:27:53,580 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 22:27:53,580 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 22:27:53,581 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 22:27:53,581 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 22:27:53,581 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 22:27:53,581 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 22:27:53,581 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 22:27:53,583 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 22:27:53,583 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 22:27:53,584 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 22:27:53,584 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 22:27:53,584 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 22:27:53,584 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 22:27:53,585 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 22:27:53,585 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 22:27:53,585 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 22:27:53,585 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 22:27:53,587 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 22:27:53,587 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 22:27:53,587 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 22:27:53,587 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 22:27:53,588 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 22:27:53,588 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 22:27:53,588 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 22:27:53,588 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 22:27:53,588 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 22:27:53,589 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 22:27:53,589 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 22:27:53,589 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 22:27:53,666 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 22:27:53,680 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 22:27:53,684 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 22:27:53,685 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 22:27:53,686 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 22:27:53,687 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label04_true-unreach-call_false-termination.c [2018-07-23 22:27:54,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceeda198d/75618e848e0843b7b0b1aee7b9beb3f0/FLAGe7ac5b96a [2018-07-23 22:27:54,330 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 22:27:54,331 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label04_true-unreach-call_false-termination.c [2018-07-23 22:27:54,358 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceeda198d/75618e848e0843b7b0b1aee7b9beb3f0/FLAGe7ac5b96a [2018-07-23 22:27:54,382 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceeda198d/75618e848e0843b7b0b1aee7b9beb3f0 [2018-07-23 22:27:54,395 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 22:27:54,397 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 22:27:54,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 22:27:54,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 22:27:54,408 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 22:27:54,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 10:27:54" (1/1) ... [2018-07-23 22:27:54,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21ede2d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:27:54, skipping insertion in model container [2018-07-23 22:27:54,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 10:27:54" (1/1) ... [2018-07-23 22:27:54,640 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 22:27:55,004 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 22:27:55,020 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 22:27:55,190 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 22:27:55,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:27:55 WrapperNode [2018-07-23 22:27:55,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 22:27:55,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 22:27:55,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 22:27:55,242 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 22:27:55,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:27:55" (1/1) ... [2018-07-23 22:27:55,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:27:55" (1/1) ... [2018-07-23 22:27:55,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 22:27:55,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 22:27:55,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 22:27:55,361 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 22:27:55,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:27:55" (1/1) ... [2018-07-23 22:27:55,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:27:55" (1/1) ... [2018-07-23 22:27:55,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:27:55" (1/1) ... [2018-07-23 22:27:55,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:27:55" (1/1) ... [2018-07-23 22:27:55,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:27:55" (1/1) ... [2018-07-23 22:27:55,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:27:55" (1/1) ... [2018-07-23 22:27:55,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:27:55" (1/1) ... [2018-07-23 22:27:55,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 22:27:55,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 22:27:55,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 22:27:55,625 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 22:27:55,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:27:55" (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 22:27:55,697 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 22:27:55,697 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 22:27:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 22:27:55,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 22:27:55,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 22:27:55,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 22:27:55,698 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 22:27:55,698 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 22:27:59,132 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 22:27:59,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 10:27:59 BoogieIcfgContainer [2018-07-23 22:27:59,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 22:27:59,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 22:27:59,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 22:27:59,140 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 22:27:59,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 10:27:54" (1/3) ... [2018-07-23 22:27:59,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605438f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 10:27:59, skipping insertion in model container [2018-07-23 22:27:59,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:27:55" (2/3) ... [2018-07-23 22:27:59,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605438f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 10:27:59, skipping insertion in model container [2018-07-23 22:27:59,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 10:27:59" (3/3) ... [2018-07-23 22:27:59,144 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label04_true-unreach-call_false-termination.c [2018-07-23 22:27:59,155 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 22:27:59,170 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 22:27:59,237 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 22:27:59,238 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 22:27:59,238 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 22:27:59,239 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 22:27:59,239 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 22:27:59,239 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 22:27:59,239 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 22:27:59,239 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 22:27:59,240 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 22:27:59,265 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-07-23 22:27:59,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-23 22:27:59,275 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:27:59,276 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 22:27:59,276 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 22:27:59,283 INFO L82 PathProgramCache]: Analyzing trace with hash -2113916641, now seen corresponding path program 1 times [2018-07-23 22:27:59,287 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:27:59,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:27:59,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:27:59,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:27:59,330 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:27:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:27:59,759 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 22:27:59,822 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 22:27:59,824 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:27:59,825 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 22:27:59,825 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:27:59,831 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 22:27:59,846 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 22:27:59,847 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 22:27:59,849 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-07-23 22:28:01,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:28:01,524 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-07-23 22:28:01,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 22:28:01,527 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-07-23 22:28:01,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:28:01,548 INFO L225 Difference]: With dead ends: 691 [2018-07-23 22:28:01,548 INFO L226 Difference]: Without dead ends: 434 [2018-07-23 22:28:01,558 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 22:28:01,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-07-23 22:28:01,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-07-23 22:28:01,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-07-23 22:28:01,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-07-23 22:28:01,646 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 59 [2018-07-23 22:28:01,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:28:01,647 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-07-23 22:28:01,647 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 22:28:01,647 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-07-23 22:28:01,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-23 22:28:01,655 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:28:01,655 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, 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] [2018-07-23 22:28:01,656 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 22:28:01,656 INFO L82 PathProgramCache]: Analyzing trace with hash 212276058, now seen corresponding path program 1 times [2018-07-23 22:28:01,656 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:28:01,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:28:01,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:28:01,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:28:01,658 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:28:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:28:01,973 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:28:01,973 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:28:01,974 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 22:28:01,974 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:28:01,976 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 22:28:01,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 22:28:01,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 22:28:01,977 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-07-23 22:28:06,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:28:06,086 INFO L93 Difference]: Finished difference Result 1588 states and 2935 transitions. [2018-07-23 22:28:06,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 22:28:06,086 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-07-23 22:28:06,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:28:06,097 INFO L225 Difference]: With dead ends: 1588 [2018-07-23 22:28:06,097 INFO L226 Difference]: Without dead ends: 1160 [2018-07-23 22:28:06,101 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 22:28:06,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2018-07-23 22:28:06,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1153. [2018-07-23 22:28:06,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2018-07-23 22:28:06,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1887 transitions. [2018-07-23 22:28:06,170 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1887 transitions. Word has length 129 [2018-07-23 22:28:06,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:28:06,171 INFO L471 AbstractCegarLoop]: Abstraction has 1153 states and 1887 transitions. [2018-07-23 22:28:06,171 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 22:28:06,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1887 transitions. [2018-07-23 22:28:06,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-23 22:28:06,175 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:28:06,175 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, 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] [2018-07-23 22:28:06,176 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 22:28:06,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1780705559, now seen corresponding path program 1 times [2018-07-23 22:28:06,176 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:28:06,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:28:06,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:28:06,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:28:06,178 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:28:06,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:28:06,433 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:28:06,433 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:28:06,434 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 22:28:06,434 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:28:06,434 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 22:28:06,435 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 22:28:06,435 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 22:28:06,435 INFO L87 Difference]: Start difference. First operand 1153 states and 1887 transitions. Second operand 5 states. [2018-07-23 22:28:08,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:28:08,837 INFO L93 Difference]: Finished difference Result 2716 states and 4601 transitions. [2018-07-23 22:28:08,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 22:28:08,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-07-23 22:28:08,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:28:08,858 INFO L225 Difference]: With dead ends: 2716 [2018-07-23 22:28:08,858 INFO L226 Difference]: Without dead ends: 1569 [2018-07-23 22:28:08,863 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-23 22:28:08,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2018-07-23 22:28:08,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1538. [2018-07-23 22:28:08,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1538 states. [2018-07-23 22:28:08,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2356 transitions. [2018-07-23 22:28:08,928 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2356 transitions. Word has length 130 [2018-07-23 22:28:08,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:28:08,929 INFO L471 AbstractCegarLoop]: Abstraction has 1538 states and 2356 transitions. [2018-07-23 22:28:08,929 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 22:28:08,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2356 transitions. [2018-07-23 22:28:08,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-23 22:28:08,931 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:28:08,932 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, 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] [2018-07-23 22:28:08,932 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 22:28:08,932 INFO L82 PathProgramCache]: Analyzing trace with hash 205801979, now seen corresponding path program 1 times [2018-07-23 22:28:08,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:28:08,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:28:08,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:28:08,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:28:08,934 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:28:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:28:09,147 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:28:09,148 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:28:09,148 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 22:28:09,148 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:28:09,149 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 22:28:09,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 22:28:09,149 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 22:28:09,149 INFO L87 Difference]: Start difference. First operand 1538 states and 2356 transitions. Second operand 5 states. [2018-07-23 22:28:12,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:28:12,084 INFO L93 Difference]: Finished difference Result 4906 states and 7504 transitions. [2018-07-23 22:28:12,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 22:28:12,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-07-23 22:28:12,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:28:12,104 INFO L225 Difference]: With dead ends: 4906 [2018-07-23 22:28:12,104 INFO L226 Difference]: Without dead ends: 3374 [2018-07-23 22:28:12,118 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-23 22:28:12,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3374 states. [2018-07-23 22:28:12,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3374 to 3263. [2018-07-23 22:28:12,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3263 states. [2018-07-23 22:28:12,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 4437 transitions. [2018-07-23 22:28:12,218 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 4437 transitions. Word has length 132 [2018-07-23 22:28:12,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:28:12,219 INFO L471 AbstractCegarLoop]: Abstraction has 3263 states and 4437 transitions. [2018-07-23 22:28:12,219 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 22:28:12,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 4437 transitions. [2018-07-23 22:28:12,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-07-23 22:28:12,226 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:28:12,226 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 22:28:12,227 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 22:28:12,227 INFO L82 PathProgramCache]: Analyzing trace with hash 2076110233, now seen corresponding path program 1 times [2018-07-23 22:28:12,227 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:28:12,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:28:12,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:28:12,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:28:12,228 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:28:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:28:12,997 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:28:12,998 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 22:28:12,998 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 22:28:12,999 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 218 with the following transitions: [2018-07-23 22:28:13,000 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], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [371], [373], [376], [384], [392], [400], [408], [416], [424], [432], [440], [448], [456], [464], [472], [480], [488], [493], [497], [501], [505], [508], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [548], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-07-23 22:28:13,057 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 22:28:13,057 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 22:28:16,536 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 22:28:16,538 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-07-23 22:28:16,584 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 22:28:19,220 INFO L232 lantSequenceWeakener]: Weakened 209 states. On average, predicates are now at 78.26% of their original sizes. [2018-07-23 22:28:19,221 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 22:28:19,653 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 22:28:19,654 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 22:28:19,654 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2018-07-23 22:28:19,654 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:28:19,655 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 22:28:19,655 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 22:28:19,655 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-23 22:28:19,656 INFO L87 Difference]: Start difference. First operand 3263 states and 4437 transitions. Second operand 7 states. [2018-07-23 22:28:33,491 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 22:28:54,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:28:54,086 INFO L93 Difference]: Finished difference Result 6705 states and 9095 transitions. [2018-07-23 22:28:54,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 22:28:54,086 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2018-07-23 22:28:54,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:28:54,103 INFO L225 Difference]: With dead ends: 6705 [2018-07-23 22:28:54,103 INFO L226 Difference]: Without dead ends: 3448 [2018-07-23 22:28:54,114 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 217 GetRequests, 211 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 22:28:54,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3448 states. [2018-07-23 22:28:54,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3448 to 3446. [2018-07-23 22:28:54,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3446 states. [2018-07-23 22:28:54,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3446 states to 3446 states and 4628 transitions. [2018-07-23 22:28:54,211 INFO L78 Accepts]: Start accepts. Automaton has 3446 states and 4628 transitions. Word has length 217 [2018-07-23 22:28:54,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:28:54,211 INFO L471 AbstractCegarLoop]: Abstraction has 3446 states and 4628 transitions. [2018-07-23 22:28:54,211 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 22:28:54,211 INFO L276 IsEmpty]: Start isEmpty. Operand 3446 states and 4628 transitions. [2018-07-23 22:28:54,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-07-23 22:28:54,220 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:28:54,221 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, 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, 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 22:28:54,221 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 22:28:54,222 INFO L82 PathProgramCache]: Analyzing trace with hash -267882291, now seen corresponding path program 1 times [2018-07-23 22:28:54,222 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:28:54,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:28:54,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:28:54,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:28:54,223 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:28:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:28:54,722 WARN L169 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-23 22:28:54,913 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-07-23 22:28:55,148 WARN L169 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-23 22:28:55,598 WARN L169 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-07-23 22:28:56,198 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 243 proven. 140 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 22:28:56,198 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 22:28:56,198 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 22:28:56,199 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 303 with the following transitions: [2018-07-23 22:28:56,199 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], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [371], [373], [376], [384], [392], [400], [408], [416], [424], [432], [440], [448], [456], [464], [472], [480], [488], [493], [497], [501], [505], [508], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [548], [549], [552], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-07-23 22:28:56,204 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 22:28:56,205 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 22:29:04,771 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 22:29:04,772 INFO L272 AbstractInterpreter]: Visited 94 different actions 181 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 22:29:04,800 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 22:29:11,602 INFO L232 lantSequenceWeakener]: Weakened 300 states. On average, predicates are now at 78.03% of their original sizes. [2018-07-23 22:29:11,602 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 22:29:13,384 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 22:29:13,385 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 22:29:13,385 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 21 [2018-07-23 22:29:13,385 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:29:13,385 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 22:29:13,386 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 22:29:13,386 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-07-23 22:29:13,386 INFO L87 Difference]: Start difference. First operand 3446 states and 4628 transitions. Second operand 11 states. [2018-07-23 22:29:53,392 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 22:30:13,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:30:13,936 INFO L93 Difference]: Finished difference Result 7075 states and 9525 transitions. [2018-07-23 22:30:13,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 22:30:13,936 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 302 [2018-07-23 22:30:13,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:30:13,953 INFO L225 Difference]: With dead ends: 7075 [2018-07-23 22:30:13,954 INFO L226 Difference]: Without dead ends: 3818 [2018-07-23 22:30:13,965 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 308 GetRequests, 245 SyntacticMatches, 47 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-07-23 22:30:13,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3818 states. [2018-07-23 22:30:14,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3818 to 3815. [2018-07-23 22:30:14,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3815 states. [2018-07-23 22:30:14,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3815 states to 3815 states and 5014 transitions. [2018-07-23 22:30:14,053 INFO L78 Accepts]: Start accepts. Automaton has 3815 states and 5014 transitions. Word has length 302 [2018-07-23 22:30:14,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:30:14,053 INFO L471 AbstractCegarLoop]: Abstraction has 3815 states and 5014 transitions. [2018-07-23 22:30:14,053 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 22:30:14,053 INFO L276 IsEmpty]: Start isEmpty. Operand 3815 states and 5014 transitions. [2018-07-23 22:30:14,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-23 22:30:14,063 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:30:14,063 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, 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, 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] [2018-07-23 22:30:14,063 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 22:30:14,064 INFO L82 PathProgramCache]: Analyzing trace with hash 2088450401, now seen corresponding path program 1 times [2018-07-23 22:30:14,064 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:30:14,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:30:14,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:30:14,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:30:14,065 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:30:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:30:14,365 WARN L169 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-07-23 22:30:14,631 WARN L169 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-07-23 22:30:15,234 WARN L169 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-23 22:30:15,394 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 215 proven. 119 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-07-23 22:30:15,395 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 22:30:15,395 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 22:30:15,395 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 329 with the following transitions: [2018-07-23 22:30:15,396 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], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [371], [373], [376], [384], [392], [400], [408], [416], [424], [432], [440], [448], [456], [464], [472], [480], [488], [493], [497], [501], [505], [508], [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], [653], [656], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-07-23 22:30:15,401 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 22:30:15,401 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 22:30:36,616 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 22:30:36,616 INFO L272 AbstractInterpreter]: Visited 120 different actions 234 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-07-23 22:30:36,619 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 22:30:49,238 INFO L232 lantSequenceWeakener]: Weakened 326 states. On average, predicates are now at 77.97% of their original sizes. [2018-07-23 22:30:49,238 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 22:30:51,219 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 22:30:51,219 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 22:30:51,220 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2018-07-23 22:30:51,220 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:30:51,221 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 22:30:51,221 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 22:30:51,221 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-07-23 22:30:51,222 INFO L87 Difference]: Start difference. First operand 3815 states and 5014 transitions. Second operand 11 states. [2018-07-23 22:31:23,916 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 22:31:42,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:31:42,393 INFO L93 Difference]: Finished difference Result 7260 states and 9675 transitions. [2018-07-23 22:31:42,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 22:31:42,394 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 328 [2018-07-23 22:31:42,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:31:42,409 INFO L225 Difference]: With dead ends: 7260 [2018-07-23 22:31:42,409 INFO L226 Difference]: Without dead ends: 4003 [2018-07-23 22:31:42,419 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 335 GetRequests, 271 SyntacticMatches, 47 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2018-07-23 22:31:42,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4003 states. [2018-07-23 22:31:42,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4003 to 4000. [2018-07-23 22:31:42,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4000 states. [2018-07-23 22:31:42,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4000 states to 4000 states and 5213 transitions. [2018-07-23 22:31:42,511 INFO L78 Accepts]: Start accepts. Automaton has 4000 states and 5213 transitions. Word has length 328 [2018-07-23 22:31:42,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:31:42,512 INFO L471 AbstractCegarLoop]: Abstraction has 4000 states and 5213 transitions. [2018-07-23 22:31:42,512 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 22:31:42,512 INFO L276 IsEmpty]: Start isEmpty. Operand 4000 states and 5213 transitions. [2018-07-23 22:31:42,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-23 22:31:42,521 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:31:42,522 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, 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, 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] [2018-07-23 22:31:42,522 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 22:31:42,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1401021877, now seen corresponding path program 1 times [2018-07-23 22:31:42,523 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:31:42,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:31:42,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:31:42,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:31:42,524 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:31:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:31:42,866 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-07-23 22:31:43,259 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 363 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:31:43,259 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 22:31:43,259 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 22:31:43,259 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 355 with the following transitions: [2018-07-23 22:31:43,260 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], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [371], [373], [376], [384], [392], [400], [408], [416], [424], [432], [440], [448], [456], [464], [472], [480], [488], [493], [497], [501], [505], [508], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [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 22:31:43,265 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 22:31:43,266 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-07-23 22:31:56,223 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-07-23 22:31:56,224 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-07-23 22:31:56,225 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 22:31:56,225 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 22:31:56,225 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 22:31:56,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:31:56,235 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 22:31:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:31:56,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 22:31:56,425 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-23 22:31:56,626 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 22:31:56,627 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 22:31:56,632 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 22:31:56,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 10:31:56 BoogieIcfgContainer [2018-07-23 22:31:56,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 22:31:56,633 INFO L168 Benchmark]: Toolchain (without parser) took 242237.37 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -850.6 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-07-23 22:31:56,634 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 22:31:56,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 843.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2018-07-23 22:31:56,636 INFO L168 Benchmark]: Boogie Procedure Inliner took 118.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 22:31:56,636 INFO L168 Benchmark]: Boogie Preprocessor took 263.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -881.7 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. [2018-07-23 22:31:56,637 INFO L168 Benchmark]: RCFGBuilder took 3510.01 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: 134.7 MB). Peak memory consumption was 134.7 MB. Max. memory is 7.1 GB. [2018-07-23 22:31:56,638 INFO L168 Benchmark]: TraceAbstraction took 237497.01 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -159.2 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-07-23 22:31:56,642 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 843.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 118.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 263.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -881.7 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3510.01 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: 134.7 MB). Peak memory consumption was 134.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237497.01 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -159.2 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 160]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 160). Cancelled while BasicCegarLoop was analyzing trace of length 355 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 11 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 237.4s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 157.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1091 SDtfs, 5136 SDslu, 1039 SDs, 0 SdLazy, 7174 SolverSat, 1329 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 111.2s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 893 GetRequests, 736 SyntacticMatches, 98 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4000occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 46.3s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.9954044748952534 AbsIntWeakeningRatio, 0.1066350710900474 AbsIntAvgWeakeningVarsNumRemoved, 249.01303317535545 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 157 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 1297 NumberOfCodeBlocks, 1297 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1290 ConstructedInterpolants, 0 QuantifiedInterpolants, 2600525 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 849/1110 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_label04_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_22-31-56-656.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem14_label04_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_22-31-56-656.csv Completed graceful shutdown