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_label29_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 19:35:32,468 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 19:35:32,473 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 19:35:32,495 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 19:35:32,495 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 19:35:32,496 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 19:35:32,498 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 19:35:32,500 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 19:35:32,502 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 19:35:32,503 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 19:35:32,504 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 19:35:32,504 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 19:35:32,505 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 19:35:32,506 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 19:35:32,507 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 19:35:32,508 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 19:35:32,509 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 19:35:32,511 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 19:35:32,514 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 19:35:32,515 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 19:35:32,516 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 19:35:32,518 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 19:35:32,520 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 19:35:32,521 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 19:35:32,521 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 19:35:32,522 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 19:35:32,523 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 19:35:32,524 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 19:35:32,525 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 19:35:32,526 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 19:35:32,526 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 19:35:32,527 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-23 19:35:32,530 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 19:35:32,547 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 19:35:32,548 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 19:35:32,548 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 19:35:32,549 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 19:35:32,549 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 19:35:32,549 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 19:35:32,549 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 19:35:32,549 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 19:35:32,550 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 19:35:32,550 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 19:35:32,550 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 19:35:32,551 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 19:35:32,552 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 19:35:32,552 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 19:35:32,552 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 19:35:32,552 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 19:35:32,552 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 19:35:32,553 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 19:35:32,553 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 19:35:32,553 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 19:35:32,553 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 19:35:32,553 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 19:35:32,554 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 19:35:32,554 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 19:35:32,554 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 19:35:32,554 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 19:35:32,554 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 19:35:32,555 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 19:35:32,555 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 19:35:32,555 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 19:35:32,555 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 19:35:32,555 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 19:35:32,556 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 19:35:32,602 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 19:35:32,617 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 19:35:32,625 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 19:35:32,627 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 19:35:32,628 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 19:35:32,628 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label29_false-unreach-call_false-termination.c [2018-07-23 19:35:33,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46bf08222/f5b8ca4eaf4d4ab9b5e9d8a9f271f10d/FLAG888c66f5e [2018-07-23 19:35:33,370 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 19:35:33,371 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label29_false-unreach-call_false-termination.c [2018-07-23 19:35:33,399 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46bf08222/f5b8ca4eaf4d4ab9b5e9d8a9f271f10d/FLAG888c66f5e [2018-07-23 19:35:33,423 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46bf08222/f5b8ca4eaf4d4ab9b5e9d8a9f271f10d [2018-07-23 19:35:33,436 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 19:35:33,439 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 19:35:33,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 19:35:33,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 19:35:33,453 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 19:35:33,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 07:35:33" (1/1) ... [2018-07-23 19:35:33,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26bc4887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:35:33, skipping insertion in model container [2018-07-23 19:35:33,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 07:35:33" (1/1) ... [2018-07-23 19:35:33,734 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 19:35:34,089 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 19:35:34,106 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 19:35:34,251 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 19:35:34,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:35:34 WrapperNode [2018-07-23 19:35:34,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 19:35:34,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 19:35:34,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 19:35:34,304 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 19:35:34,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:35:34" (1/1) ... [2018-07-23 19:35:34,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:35:34" (1/1) ... [2018-07-23 19:35:34,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 19:35:34,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 19:35:34,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 19:35:34,433 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 19:35:34,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:35:34" (1/1) ... [2018-07-23 19:35:34,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:35:34" (1/1) ... [2018-07-23 19:35:34,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:35:34" (1/1) ... [2018-07-23 19:35:34,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:35:34" (1/1) ... [2018-07-23 19:35:34,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:35:34" (1/1) ... [2018-07-23 19:35:34,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:35:34" (1/1) ... [2018-07-23 19:35:34,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:35:34" (1/1) ... [2018-07-23 19:35:34,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 19:35:34,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 19:35:34,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 19:35:34,774 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 19:35:34,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:35:34" (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 19:35:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 19:35:34,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 19:35:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 19:35:34,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 19:35:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 19:35:34,854 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 19:35:34,854 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 19:35:34,854 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 19:35:39,043 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 19:35:39,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 07:35:39 BoogieIcfgContainer [2018-07-23 19:35:39,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 19:35:39,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 19:35:39,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 19:35:39,050 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 19:35:39,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 07:35:33" (1/3) ... [2018-07-23 19:35:39,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18344ba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 07:35:39, skipping insertion in model container [2018-07-23 19:35:39,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:35:34" (2/3) ... [2018-07-23 19:35:39,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18344ba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 07:35:39, skipping insertion in model container [2018-07-23 19:35:39,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 07:35:39" (3/3) ... [2018-07-23 19:35:39,054 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label29_false-unreach-call_false-termination.c [2018-07-23 19:35:39,064 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 19:35:39,072 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 19:35:39,126 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 19:35:39,127 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 19:35:39,127 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 19:35:39,127 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 19:35:39,128 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 19:35:39,128 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 19:35:39,128 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 19:35:39,128 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 19:35:39,129 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 19:35:39,157 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-07-23 19:35:39,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-23 19:35:39,165 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:35:39,166 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] [2018-07-23 19:35:39,167 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 19:35:39,172 INFO L82 PathProgramCache]: Analyzing trace with hash 102508745, now seen corresponding path program 1 times [2018-07-23 19:35:39,175 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:35:39,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:35:39,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:35:39,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:35:39,227 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:35:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:35:39,610 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 19:35:39,612 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:35:39,613 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 19:35:39,613 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:35:39,620 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 19:35:39,635 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 19:35:39,636 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 19:35:39,639 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-07-23 19:35:42,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:35:42,718 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-07-23 19:35:42,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 19:35:42,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-07-23 19:35:42,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:35:42,746 INFO L225 Difference]: With dead ends: 894 [2018-07-23 19:35:42,746 INFO L226 Difference]: Without dead ends: 633 [2018-07-23 19:35:42,756 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 19:35:42,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-07-23 19:35:42,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-07-23 19:35:42,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-07-23 19:35:42,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 962 transitions. [2018-07-23 19:35:42,860 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 962 transitions. Word has length 23 [2018-07-23 19:35:42,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:35:42,861 INFO L471 AbstractCegarLoop]: Abstraction has 633 states and 962 transitions. [2018-07-23 19:35:42,861 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 19:35:42,861 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 962 transitions. [2018-07-23 19:35:42,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-23 19:35:42,869 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:35:42,870 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:35:42,870 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 19:35:42,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1217398427, now seen corresponding path program 1 times [2018-07-23 19:35:42,871 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:35:42,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:35:42,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:35:42,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:35:42,872 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:35:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:35:43,249 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:35:43,250 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:35:43,250 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 19:35:43,250 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:35:43,252 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 19:35:43,253 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 19:35:43,253 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 19:35:43,254 INFO L87 Difference]: Start difference. First operand 633 states and 962 transitions. Second operand 4 states. [2018-07-23 19:35:46,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:35:46,570 INFO L93 Difference]: Finished difference Result 2358 states and 3740 transitions. [2018-07-23 19:35:46,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 19:35:46,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2018-07-23 19:35:46,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:35:46,593 INFO L225 Difference]: With dead ends: 2358 [2018-07-23 19:35:46,593 INFO L226 Difference]: Without dead ends: 1731 [2018-07-23 19:35:46,602 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 19:35:46,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-07-23 19:35:46,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-07-23 19:35:46,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-07-23 19:35:46,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2514 transitions. [2018-07-23 19:35:46,691 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2514 transitions. Word has length 136 [2018-07-23 19:35:46,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:35:46,692 INFO L471 AbstractCegarLoop]: Abstraction has 1731 states and 2514 transitions. [2018-07-23 19:35:46,692 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 19:35:46,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2514 transitions. [2018-07-23 19:35:46,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-07-23 19:35:46,709 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:35:46,710 INFO L353 BasicCegarLoop]: trace histogram [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, 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 19:35:46,711 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 19:35:46,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1388630431, now seen corresponding path program 1 times [2018-07-23 19:35:46,711 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:35:46,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:35:46,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:35:46,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:35:46,713 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:35:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:35:47,357 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:35:47,357 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:35:47,357 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:35:47,361 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 212 with the following transitions: [2018-07-23 19:35:47,365 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [109], [111], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [574], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [972], [973], [974], [975], [977], [978] [2018-07-23 19:35:47,460 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:35:47,461 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:35:52,455 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 19:35:52,457 INFO L272 AbstractInterpreter]: Visited 109 different actions 109 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-07-23 19:35:52,505 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 19:35:56,390 INFO L232 lantSequenceWeakener]: Weakened 203 states. On average, predicates are now at 77.48% of their original sizes. [2018-07-23 19:35:56,390 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 19:35:56,838 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 19:35:56,839 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 19:35:56,840 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-07-23 19:35:56,840 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:35:56,841 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 19:35:56,841 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 19:35:56,841 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-23 19:35:56,841 INFO L87 Difference]: Start difference. First operand 1731 states and 2514 transitions. Second operand 7 states. [2018-07-23 19:36:09,318 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 19:36:24,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:36:24,360 INFO L93 Difference]: Finished difference Result 3641 states and 5264 transitions. [2018-07-23 19:36:24,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 19:36:24,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 211 [2018-07-23 19:36:24,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:36:24,377 INFO L225 Difference]: With dead ends: 3641 [2018-07-23 19:36:24,377 INFO L226 Difference]: Without dead ends: 1916 [2018-07-23 19:36:24,386 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-23 19:36:24,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2018-07-23 19:36:24,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1914. [2018-07-23 19:36:24,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2018-07-23 19:36:24,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2705 transitions. [2018-07-23 19:36:24,453 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2705 transitions. Word has length 211 [2018-07-23 19:36:24,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:36:24,453 INFO L471 AbstractCegarLoop]: Abstraction has 1914 states and 2705 transitions. [2018-07-23 19:36:24,453 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 19:36:24,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2705 transitions. [2018-07-23 19:36:24,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-23 19:36:24,462 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:36:24,463 INFO L353 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:36:24,463 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 19:36:24,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1435808135, now seen corresponding path program 1 times [2018-07-23 19:36:24,464 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:36:24,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:36:24,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:36:24,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:36:24,466 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:36:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:36:25,033 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-23 19:36:25,219 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-07-23 19:36:25,661 WARN L169 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-07-23 19:36:26,213 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 135 proven. 161 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 19:36:26,213 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:36:26,213 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:36:26,214 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 297 with the following transitions: [2018-07-23 19:36:26,214 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [109], [111], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [574], [575], [578], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [972], [973], [974], [975], [977], [978] [2018-07-23 19:36:26,220 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:36:26,220 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:36:39,180 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 19:36:39,180 INFO L272 AbstractInterpreter]: Visited 113 different actions 219 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 19:36:39,187 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 19:36:48,805 INFO L232 lantSequenceWeakener]: Weakened 294 states. On average, predicates are now at 77.49% of their original sizes. [2018-07-23 19:36:48,805 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 19:36:49,896 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 19:36:49,896 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 19:36:49,897 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 21 [2018-07-23 19:36:49,897 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:36:49,898 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 19:36:49,898 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 19:36:49,899 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-07-23 19:36:49,899 INFO L87 Difference]: Start difference. First operand 1914 states and 2705 transitions. Second operand 11 states. [2018-07-23 19:37:32,398 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 19:38:10,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:38:10,408 INFO L93 Difference]: Finished difference Result 4011 states and 5707 transitions. [2018-07-23 19:38:10,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 19:38:10,409 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 296 [2018-07-23 19:38:10,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:38:10,424 INFO L225 Difference]: With dead ends: 4011 [2018-07-23 19:38:10,424 INFO L226 Difference]: Without dead ends: 2286 [2018-07-23 19:38:10,434 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 302 GetRequests, 275 SyntacticMatches, 11 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-07-23 19:38:10,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2286 states. [2018-07-23 19:38:10,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2286 to 2283. [2018-07-23 19:38:10,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2283 states. [2018-07-23 19:38:10,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 3091 transitions. [2018-07-23 19:38:10,512 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 3091 transitions. Word has length 296 [2018-07-23 19:38:10,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:38:10,513 INFO L471 AbstractCegarLoop]: Abstraction has 2283 states and 3091 transitions. [2018-07-23 19:38:10,513 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 19:38:10,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 3091 transitions. [2018-07-23 19:38:10,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-23 19:38:10,523 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:38:10,523 INFO L353 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:38:10,524 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 19:38:10,524 INFO L82 PathProgramCache]: Analyzing trace with hash -846587827, now seen corresponding path program 1 times [2018-07-23 19:38:10,524 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:38:10,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:38:10,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:38:10,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:38:10,526 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:38:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:38:11,001 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 107 proven. 159 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-07-23 19:38:11,001 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:38:11,001 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:38:11,002 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 323 with the following transitions: [2018-07-23 19:38:11,002 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [109], [111], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [574], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [659], [663], [667], [671], [675], [679], [682], [972], [973], [974], [975], [977], [978] [2018-07-23 19:38:11,007 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:38:11,007 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:38:32,736 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 19:38:32,736 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 19:38:32,742 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 19:38:49,731 INFO L232 lantSequenceWeakener]: Weakened 320 states. On average, predicates are now at 77.47% of their original sizes. [2018-07-23 19:38:49,732 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 19:38:50,503 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 19:38:50,504 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 19:38:50,504 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2018-07-23 19:38:50,504 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:38:50,505 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 19:38:50,505 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 19:38:50,506 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-07-23 19:38:50,506 INFO L87 Difference]: Start difference. First operand 2283 states and 3091 transitions. Second operand 11 states. [2018-07-23 19:39:21,417 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-07-23 19:39:25,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 19:39:25,233 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 19:39:25,239 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 19:39:25,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 07:39:25 BoogieIcfgContainer [2018-07-23 19:39:25,239 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 19:39:25,240 INFO L168 Benchmark]: Toolchain (without parser) took 231803.34 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-07-23 19:39:25,241 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 19:39:25,242 INFO L168 Benchmark]: CACSL2BoogieTranslator took 858.26 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-07-23 19:39:25,243 INFO L168 Benchmark]: Boogie Procedure Inliner took 129.15 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 19:39:25,244 INFO L168 Benchmark]: Boogie Preprocessor took 339.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 785.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -885.9 MB). Peak memory consumption was 35.2 MB. Max. memory is 7.1 GB. [2018-07-23 19:39:25,245 INFO L168 Benchmark]: RCFGBuilder took 4272.13 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: 137.0 MB). Peak memory consumption was 137.0 MB. Max. memory is 7.1 GB. [2018-07-23 19:39:25,246 INFO L168 Benchmark]: TraceAbstraction took 226193.22 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 3.0 GB in the end (delta: -926.3 MB). Peak memory consumption was 937.6 MB. Max. memory is 7.1 GB. [2018-07-23 19:39:25,251 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 858.26 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 129.15 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 339.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 785.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -885.9 MB). Peak memory consumption was 35.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4272.13 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: 137.0 MB). Peak memory consumption was 137.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226193.22 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 3.0 GB in the end (delta: -926.3 MB). Peak memory consumption was 937.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 52). Cancelled while BasicCegarLoop was constructing difference of abstraction (2283states) and interpolant automaton (currently 14 states, 11 states before enhancement), while ReachableStatesComputation was computing reachable states (987 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 226.1s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 149.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 794 SDtfs, 2830 SDslu, 1023 SDs, 0 SdLazy, 4893 SolverSat, 839 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 101.7s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 853 GetRequests, 788 SyntacticMatches, 22 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2283occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 39.8s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9953043302803801 AbsIntWeakeningRatio, 0.1089588377723971 AbsIntAvgWeakeningVarsNumRemoved, 246.81961259079904 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 988 NumberOfCodeBlocks, 988 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 983 ConstructedInterpolants, 0 QuantifiedInterpolants, 1927112 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 431/753 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_label29_false-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_19-39-25-265.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem14_label29_false-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_19-39-25-265.csv Completed graceful shutdown