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_label18_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 19:34:53,336 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 19:34:53,338 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 19:34:53,350 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 19:34:53,350 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 19:34:53,352 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 19:34:53,353 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 19:34:53,355 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 19:34:53,357 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 19:34:53,358 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 19:34:53,358 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 19:34:53,359 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 19:34:53,360 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 19:34:53,361 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 19:34:53,362 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 19:34:53,363 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 19:34:53,364 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 19:34:53,366 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 19:34:53,368 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 19:34:53,369 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 19:34:53,371 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 19:34:53,372 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 19:34:53,375 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 19:34:53,375 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 19:34:53,375 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 19:34:53,376 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 19:34:53,377 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 19:34:53,378 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 19:34:53,379 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 19:34:53,380 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 19:34:53,380 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 19:34:53,381 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 19:34:53,382 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 19:34:53,382 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 19:34:53,383 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 19:34:53,384 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 19:34:53,384 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf [2018-07-23 19:34:53,401 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 19:34:53,401 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 19:34:53,402 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 19:34:53,402 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 19:34:53,403 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 19:34:53,403 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 19:34:53,403 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 19:34:53,403 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 19:34:53,403 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 19:34:53,404 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 19:34:53,404 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 19:34:53,405 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 19:34:53,405 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 19:34:53,405 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 19:34:53,405 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 19:34:53,405 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 19:34:53,406 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 19:34:53,406 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 19:34:53,406 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 19:34:53,406 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 19:34:53,406 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 19:34:53,407 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 19:34:53,407 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 19:34:53,407 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 19:34:53,407 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 19:34:53,407 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 19:34:53,408 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 19:34:53,408 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 19:34:53,408 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 19:34:53,408 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 19:34:53,408 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 19:34:53,409 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 19:34:53,409 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 19:34:53,482 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 19:34:53,503 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 19:34:53,510 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 19:34:53,512 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 19:34:53,513 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 19:34:53,514 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label18_false-unreach-call_false-termination.c [2018-07-23 19:34:53,766 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4732121e/3930a1944db742c695834cae56257204/FLAGf6c15673a [2018-07-23 19:34:54,177 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 19:34:54,178 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label18_false-unreach-call_false-termination.c [2018-07-23 19:34:54,214 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4732121e/3930a1944db742c695834cae56257204/FLAGf6c15673a [2018-07-23 19:34:54,235 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4732121e/3930a1944db742c695834cae56257204 [2018-07-23 19:34:54,245 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 19:34:54,246 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 19:34:54,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 19:34:54,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 19:34:54,258 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 19:34:54,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 07:34:54" (1/1) ... [2018-07-23 19:34:54,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50a528a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:34:54, skipping insertion in model container [2018-07-23 19:34:54,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 07:34:54" (1/1) ... [2018-07-23 19:34:54,515 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 19:34:54,853 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 19:34:54,873 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 19:34:55,029 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 19:34:55,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:34:55 WrapperNode [2018-07-23 19:34:55,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 19:34:55,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 19:34:55,090 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 19:34:55,090 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 19:34:55,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:34:55" (1/1) ... [2018-07-23 19:34:55,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:34:55" (1/1) ... [2018-07-23 19:34:55,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 19:34:55,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 19:34:55,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 19:34:55,194 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 19:34:55,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:34:55" (1/1) ... [2018-07-23 19:34:55,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:34:55" (1/1) ... [2018-07-23 19:34:55,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:34:55" (1/1) ... [2018-07-23 19:34:55,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:34:55" (1/1) ... [2018-07-23 19:34:55,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:34:55" (1/1) ... [2018-07-23 19:34:55,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:34:55" (1/1) ... [2018-07-23 19:34:55,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:34:55" (1/1) ... [2018-07-23 19:34:55,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 19:34:55,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 19:34:55,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 19:34:55,481 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 19:34:55,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:34:55" (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 19:34:55,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 19:34:55,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 19:34:55,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 19:34:55,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 19:34:55,556 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 19:34:55,556 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 19:34:55,557 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_output [2018-07-23 19:34:55,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_output [2018-07-23 19:34:59,344 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 19:34:59,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 07:34:59 BoogieIcfgContainer [2018-07-23 19:34:59,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 19:34:59,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 19:34:59,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 19:34:59,350 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 19:34:59,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 07:34:54" (1/3) ... [2018-07-23 19:34:59,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8843cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 07:34:59, skipping insertion in model container [2018-07-23 19:34:59,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:34:55" (2/3) ... [2018-07-23 19:34:59,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8843cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 07:34:59, skipping insertion in model container [2018-07-23 19:34:59,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 07:34:59" (3/3) ... [2018-07-23 19:34:59,355 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label18_false-unreach-call_false-termination.c [2018-07-23 19:34:59,365 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 19:34:59,374 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 19:34:59,423 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 19:34:59,424 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 19:34:59,424 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 19:34:59,424 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 19:34:59,424 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 19:34:59,424 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 19:34:59,425 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 19:34:59,425 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 19:34:59,425 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 19:34:59,452 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-07-23 19:34:59,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-07-23 19:34:59,466 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:34:59,467 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] [2018-07-23 19:34:59,467 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:34:59,473 INFO L82 PathProgramCache]: Analyzing trace with hash -562716263, now seen corresponding path program 1 times [2018-07-23 19:34:59,476 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:34:59,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:34:59,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:34:59,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:34:59,528 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:34:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:34:59,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:34:59,946 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:34:59,946 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 19:34:59,946 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:34:59,952 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 19:34:59,970 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 19:34:59,971 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 19:34:59,974 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-07-23 19:35:02,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:35:02,104 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-07-23 19:35:02,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 19:35:02,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2018-07-23 19:35:02,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:35:02,129 INFO L225 Difference]: With dead ends: 691 [2018-07-23 19:35:02,130 INFO L226 Difference]: Without dead ends: 434 [2018-07-23 19:35:02,138 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 19:35:02,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-07-23 19:35:02,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-07-23 19:35:02,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-07-23 19:35:02,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 773 transitions. [2018-07-23 19:35:02,229 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 773 transitions. Word has length 27 [2018-07-23 19:35:02,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:35:02,230 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 773 transitions. [2018-07-23 19:35:02,230 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 19:35:02,230 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 773 transitions. [2018-07-23 19:35:02,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-07-23 19:35:02,237 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:35:02,237 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 19:35:02,237 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:35:02,238 INFO L82 PathProgramCache]: Analyzing trace with hash 2102327148, now seen corresponding path program 1 times [2018-07-23 19:35:02,238 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:35:02,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:35:02,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:35:02,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:35:02,240 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:35:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:35:02,626 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:35:02,627 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:35:02,627 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 19:35:02,627 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:35:02,630 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 19:35:02,630 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 19:35:02,630 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-23 19:35:02,631 INFO L87 Difference]: Start difference. First operand 434 states and 773 transitions. Second operand 6 states. [2018-07-23 19:35:09,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:35:09,481 INFO L93 Difference]: Finished difference Result 1610 states and 2994 transitions. [2018-07-23 19:35:09,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 19:35:09,485 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2018-07-23 19:35:09,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:35:09,494 INFO L225 Difference]: With dead ends: 1610 [2018-07-23 19:35:09,495 INFO L226 Difference]: Without dead ends: 1182 [2018-07-23 19:35:09,500 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-23 19:35:09,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2018-07-23 19:35:09,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1142. [2018-07-23 19:35:09,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1142 states. [2018-07-23 19:35:09,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1838 transitions. [2018-07-23 19:35:09,559 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1838 transitions. Word has length 109 [2018-07-23 19:35:09,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:35:09,560 INFO L471 AbstractCegarLoop]: Abstraction has 1142 states and 1838 transitions. [2018-07-23 19:35:09,560 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 19:35:09,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1838 transitions. [2018-07-23 19:35:09,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-07-23 19:35:09,564 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:35:09,564 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 19:35:09,564 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:35:09,565 INFO L82 PathProgramCache]: Analyzing trace with hash -534229040, now seen corresponding path program 1 times [2018-07-23 19:35:09,565 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:35:09,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:35:09,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:35:09,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:35:09,567 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:35:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:35:09,782 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:35:09,782 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:35:09,782 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 19:35:09,782 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:35:09,783 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 19:35:09,783 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 19:35:09,784 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 19:35:09,784 INFO L87 Difference]: Start difference. First operand 1142 states and 1838 transitions. Second operand 4 states. [2018-07-23 19:35:13,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:35:13,227 INFO L93 Difference]: Finished difference Result 4190 states and 7000 transitions. [2018-07-23 19:35:13,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 19:35:13,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2018-07-23 19:35:13,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:35:13,242 INFO L225 Difference]: With dead ends: 4190 [2018-07-23 19:35:13,243 INFO L226 Difference]: Without dead ends: 1983 [2018-07-23 19:35:13,261 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 19:35:13,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2018-07-23 19:35:13,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1981. [2018-07-23 19:35:13,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-07-23 19:35:13,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3073 transitions. [2018-07-23 19:35:13,330 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3073 transitions. Word has length 111 [2018-07-23 19:35:13,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:35:13,331 INFO L471 AbstractCegarLoop]: Abstraction has 1981 states and 3073 transitions. [2018-07-23 19:35:13,331 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 19:35:13,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3073 transitions. [2018-07-23 19:35:13,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-23 19:35:13,340 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:35:13,341 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:35:13,341 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:35:13,341 INFO L82 PathProgramCache]: Analyzing trace with hash 919044408, now seen corresponding path program 1 times [2018-07-23 19:35:13,342 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:35:13,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:35:13,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:35:13,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:35:13,343 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:35:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:35:13,907 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:35:13,907 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:35:13,907 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:35:13,909 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 207 with the following transitions: [2018-07-23 19:35:13,912 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [972], [973], [974], [975], [977], [978] [2018-07-23 19:35:13,990 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:35:13,991 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:35:19,369 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 19:35:19,370 INFO L272 AbstractInterpreter]: Visited 110 different actions 110 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-07-23 19:35:19,379 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 19:35:22,588 INFO L232 lantSequenceWeakener]: Weakened 198 states. On average, predicates are now at 77.58% of their original sizes. [2018-07-23 19:35:22,588 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 19:35:22,950 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 19:35:22,952 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 19:35:22,952 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-07-23 19:35:22,952 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:35:22,953 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 19:35:22,953 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 19:35:22,953 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-23 19:35:22,954 INFO L87 Difference]: Start difference. First operand 1981 states and 3073 transitions. Second operand 7 states. [2018-07-23 19:35:37,088 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 19:35:56,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:35:56,628 INFO L93 Difference]: Finished difference Result 4141 states and 6374 transitions. [2018-07-23 19:35:56,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 19:35:56,629 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2018-07-23 19:35:56,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:35:56,641 INFO L225 Difference]: With dead ends: 4141 [2018-07-23 19:35:56,642 INFO L226 Difference]: Without dead ends: 2166 [2018-07-23 19:35:56,649 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 206 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-23 19:35:56,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2018-07-23 19:35:56,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 2164. [2018-07-23 19:35:56,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2164 states. [2018-07-23 19:35:56,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2164 states to 2164 states and 3264 transitions. [2018-07-23 19:35:56,715 INFO L78 Accepts]: Start accepts. Automaton has 2164 states and 3264 transitions. Word has length 206 [2018-07-23 19:35:56,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:35:56,715 INFO L471 AbstractCegarLoop]: Abstraction has 2164 states and 3264 transitions. [2018-07-23 19:35:56,716 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 19:35:56,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2164 states and 3264 transitions. [2018-07-23 19:35:56,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-07-23 19:35:56,724 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:35:56,724 INFO L353 BasicCegarLoop]: trace histogram [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, 3, 3, 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] [2018-07-23 19:35:56,724 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:35:56,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1606007774, now seen corresponding path program 1 times [2018-07-23 19:35:56,725 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:35:56,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:35:56,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:35:56,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:35:56,726 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:35:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:35:57,317 WARN L169 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-23 19:35:58,003 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 137 proven. 151 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 19:35:58,003 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:35:58,003 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:35:58,004 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 292 with the following transitions: [2018-07-23 19:35:58,004 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [578], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [972], [973], [974], [975], [977], [978] [2018-07-23 19:35:58,012 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:35:58,012 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:36:10,063 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 19:36:10,063 INFO L272 AbstractInterpreter]: Visited 114 different actions 221 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 19:36:10,072 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 19:36:17,103 INFO L232 lantSequenceWeakener]: Weakened 289 states. On average, predicates are now at 77.56% of their original sizes. [2018-07-23 19:36:17,103 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 19:36:18,098 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 19:36:18,098 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 19:36:18,099 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2018-07-23 19:36:18,099 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:36:18,100 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 19:36:18,100 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 19:36:18,100 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-07-23 19:36:18,100 INFO L87 Difference]: Start difference. First operand 2164 states and 3264 transitions. Second operand 11 states. [2018-07-23 19:36:58,160 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 19:37:31,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:37:31,119 INFO L93 Difference]: Finished difference Result 4511 states and 6809 transitions. [2018-07-23 19:37:31,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 19:37:31,120 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 291 [2018-07-23 19:37:31,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:37:31,135 INFO L225 Difference]: With dead ends: 4511 [2018-07-23 19:37:31,135 INFO L226 Difference]: Without dead ends: 2536 [2018-07-23 19:37:31,144 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 297 GetRequests, 266 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-07-23 19:37:31,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2536 states. [2018-07-23 19:37:31,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2536 to 2533. [2018-07-23 19:37:31,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2533 states. [2018-07-23 19:37:31,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2533 states to 2533 states and 3650 transitions. [2018-07-23 19:37:31,222 INFO L78 Accepts]: Start accepts. Automaton has 2533 states and 3650 transitions. Word has length 291 [2018-07-23 19:37:31,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:37:31,223 INFO L471 AbstractCegarLoop]: Abstraction has 2533 states and 3650 transitions. [2018-07-23 19:37:31,223 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 19:37:31,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2533 states and 3650 transitions. [2018-07-23 19:37:31,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-07-23 19:37:31,233 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:37:31,234 INFO L353 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:37:31,234 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:37:31,235 INFO L82 PathProgramCache]: Analyzing trace with hash 342814090, now seen corresponding path program 1 times [2018-07-23 19:37:31,235 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:37:31,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:37:31,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:37:31,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:37:31,236 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:37:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:37:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 242 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:37:32,404 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:37:32,404 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:37:32,404 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 318 with the following transitions: [2018-07-23 19:37:32,405 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [667], [671], [675], [679], [682], [972], [973], [974], [975], [977], [978] [2018-07-23 19:37:32,409 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:37:32,410 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:37:52,584 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 19:37:52,584 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 19:37:52,632 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 19:38:06,274 INFO L232 lantSequenceWeakener]: Weakened 315 states. On average, predicates are now at 77.54% of their original sizes. [2018-07-23 19:38:06,274 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 19:38:07,102 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 19:38:07,102 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 19:38:07,102 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 23 [2018-07-23 19:38:07,103 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:38:07,104 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 19:38:07,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 19:38:07,104 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-07-23 19:38:07,105 INFO L87 Difference]: Start difference. First operand 2533 states and 3650 transitions. Second operand 11 states. [2018-07-23 19:38:42,393 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-07-23 19:38:50,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 19:38:50,836 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 19:38:50,840 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 19:38:50,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 07:38:50 BoogieIcfgContainer [2018-07-23 19:38:50,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 19:38:50,842 INFO L168 Benchmark]: Toolchain (without parser) took 236596.20 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -521.0 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-07-23 19:38:50,843 INFO L168 Benchmark]: CDTParser took 0.23 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 19:38:50,844 INFO L168 Benchmark]: CACSL2BoogieTranslator took 841.16 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-23 19:38:50,845 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.05 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 19:38:50,845 INFO L168 Benchmark]: Boogie Preprocessor took 287.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 782.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -869.5 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. [2018-07-23 19:38:50,846 INFO L168 Benchmark]: RCFGBuilder took 3864.95 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: 137.9 MB). Peak memory consumption was 137.9 MB. Max. memory is 7.1 GB. [2018-07-23 19:38:50,847 INFO L168 Benchmark]: TraceAbstraction took 231494.39 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 1.9 GB in the end (delta: 157.6 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-07-23 19:38:50,852 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 841.16 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 103.05 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 287.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 782.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -869.5 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3864.95 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: 137.9 MB). Peak memory consumption was 137.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231494.39 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 1.9 GB in the end (delta: 157.6 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 64). Cancelled while BasicCegarLoop was constructing difference of abstraction (2533states) and interpolant automaton (currently 13 states, 11 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 231.4s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 163.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 811 SDtfs, 3449 SDslu, 974 SDs, 0 SdLazy, 6628 SolverSat, 969 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 110.7s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 846 GetRequests, 767 SyntacticMatches, 32 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2533occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 37.7s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9952174806554797 AbsIntWeakeningRatio, 0.11097410604192355 AbsIntAvgWeakeningVarsNumRemoved, 245.7139334155364 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 47 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 1061 NumberOfCodeBlocks, 1061 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1055 ConstructedInterpolants, 0 QuantifiedInterpolants, 2117785 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 536/760 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_label18_false-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_19-38-50-867.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem14_label18_false-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_19-38-50-867.csv Completed graceful shutdown