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/Problem10_label28_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 19:12:56,871 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 19:12:56,873 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 19:12:56,888 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 19:12:56,889 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 19:12:56,890 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 19:12:56,891 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 19:12:56,893 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 19:12:56,895 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 19:12:56,895 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 19:12:56,896 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 19:12:56,897 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 19:12:56,898 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 19:12:56,899 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 19:12:56,900 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 19:12:56,900 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 19:12:56,901 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 19:12:56,903 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 19:12:56,905 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 19:12:56,910 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 19:12:56,911 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 19:12:56,916 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 19:12:56,920 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 19:12:56,920 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 19:12:56,920 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 19:12:56,921 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 19:12:56,925 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 19:12:56,926 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 19:12:56,927 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 19:12:56,930 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 19:12:56,930 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 19:12:56,931 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-23 19:12:56,934 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 19:12:56,958 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 19:12:56,959 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 19:12:56,960 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 19:12:56,960 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 19:12:56,961 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 19:12:56,961 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 19:12:56,961 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 19:12:56,961 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 19:12:56,961 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 19:12:56,961 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 19:12:56,962 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 19:12:56,962 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 19:12:56,963 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 19:12:56,963 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 19:12:56,963 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 19:12:56,963 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 19:12:56,964 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 19:12:56,964 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 19:12:56,965 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 19:12:56,965 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 19:12:56,965 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 19:12:56,966 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 19:12:56,966 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 19:12:56,966 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 19:12:56,966 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 19:12:56,966 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 19:12:56,966 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 19:12:56,967 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 19:12:56,967 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 19:12:56,967 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 19:12:56,967 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 19:12:56,967 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 19:12:56,968 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 19:12:57,027 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 19:12:57,044 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 19:12:57,052 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 19:12:57,053 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 19:12:57,054 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 19:12:57,055 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label28_false-unreach-call.c [2018-07-23 19:12:57,461 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a38aacb77/821b341992364630917aac4734dfb898/FLAGf14220fc1 [2018-07-23 19:12:57,719 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 19:12:57,719 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label28_false-unreach-call.c [2018-07-23 19:12:57,740 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a38aacb77/821b341992364630917aac4734dfb898/FLAGf14220fc1 [2018-07-23 19:12:57,757 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a38aacb77/821b341992364630917aac4734dfb898 [2018-07-23 19:12:57,769 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 19:12:57,771 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 19:12:57,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 19:12:57,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 19:12:57,780 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 19:12:57,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 07:12:57" (1/1) ... [2018-07-23 19:12:57,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@85aa627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:12:57, skipping insertion in model container [2018-07-23 19:12:57,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 07:12:57" (1/1) ... [2018-07-23 19:12:58,009 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 19:12:58,251 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 19:12:58,268 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 19:12:58,439 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 19:12:58,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:12:58 WrapperNode [2018-07-23 19:12:58,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 19:12:58,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 19:12:58,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 19:12:58,503 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 19:12:58,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:12:58" (1/1) ... [2018-07-23 19:12:58,547 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:12:58" (1/1) ... [2018-07-23 19:12:58,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 19:12:58,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 19:12:58,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 19:12:58,631 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 19:12:58,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:12:58" (1/1) ... [2018-07-23 19:12:58,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:12:58" (1/1) ... [2018-07-23 19:12:58,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:12:58" (1/1) ... [2018-07-23 19:12:58,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:12:58" (1/1) ... [2018-07-23 19:12:58,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:12:58" (1/1) ... [2018-07-23 19:12:58,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:12:58" (1/1) ... [2018-07-23 19:12:58,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:12:58" (1/1) ... [2018-07-23 19:12:58,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 19:12:58,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 19:12:58,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 19:12:58,896 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 19:12:58,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:12:58" (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 19:12:58,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 19:12:58,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 19:12:58,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 19:12:58,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 19:12:58,981 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 19:12:58,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 19:12:58,981 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-23 19:12:58,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-23 19:13:03,402 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 19:13:03,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 07:13:03 BoogieIcfgContainer [2018-07-23 19:13:03,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 19:13:03,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 19:13:03,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 19:13:03,419 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 19:13:03,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 07:12:57" (1/3) ... [2018-07-23 19:13:03,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1853240d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 07:13:03, skipping insertion in model container [2018-07-23 19:13:03,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:12:58" (2/3) ... [2018-07-23 19:13:03,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1853240d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 07:13:03, skipping insertion in model container [2018-07-23 19:13:03,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 07:13:03" (3/3) ... [2018-07-23 19:13:03,423 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label28_false-unreach-call.c [2018-07-23 19:13:03,435 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 19:13:03,444 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 19:13:03,512 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 19:13:03,513 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 19:13:03,513 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 19:13:03,513 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 19:13:03,514 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 19:13:03,514 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 19:13:03,514 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 19:13:03,514 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 19:13:03,514 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 19:13:03,557 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-07-23 19:13:03,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-07-23 19:13:03,570 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:13:03,571 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:13:03,572 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:13:03,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1411086700, now seen corresponding path program 1 times [2018-07-23 19:13:03,582 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:13:03,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:13:03,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:13:03,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:13:03,634 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:13:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:13:04,045 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 19:13:04,050 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:13:04,050 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 19:13:04,050 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:13:04,057 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 19:13:04,074 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 19:13:04,075 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 19:13:04,078 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-07-23 19:13:05,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:13:05,879 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-07-23 19:13:05,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 19:13:05,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-07-23 19:13:05,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:13:05,904 INFO L225 Difference]: With dead ends: 574 [2018-07-23 19:13:05,904 INFO L226 Difference]: Without dead ends: 356 [2018-07-23 19:13:05,913 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 19:13:05,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-07-23 19:13:05,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-07-23 19:13:05,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-07-23 19:13:05,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-07-23 19:13:05,994 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 18 [2018-07-23 19:13:05,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:13:05,995 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-07-23 19:13:05,995 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 19:13:05,996 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-07-23 19:13:06,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-07-23 19:13:06,001 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:13:06,002 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 19:13:06,002 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:13:06,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1717471293, now seen corresponding path program 1 times [2018-07-23 19:13:06,003 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:13:06,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:13:06,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:13:06,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:13:06,005 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:13:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:13:06,407 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:13:06,407 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:13:06,407 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 19:13:06,408 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:13:06,410 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 19:13:06,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 19:13:06,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 19:13:06,411 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 6 states. [2018-07-23 19:13:08,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:13:08,802 INFO L93 Difference]: Finished difference Result 998 states and 1753 transitions. [2018-07-23 19:13:08,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 19:13:08,803 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2018-07-23 19:13:08,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:13:08,810 INFO L225 Difference]: With dead ends: 998 [2018-07-23 19:13:08,810 INFO L226 Difference]: Without dead ends: 648 [2018-07-23 19:13:08,817 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 19:13:08,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2018-07-23 19:13:08,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 639. [2018-07-23 19:13:08,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2018-07-23 19:13:08,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 994 transitions. [2018-07-23 19:13:08,863 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 994 transitions. Word has length 101 [2018-07-23 19:13:08,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:13:08,864 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 994 transitions. [2018-07-23 19:13:08,864 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 19:13:08,864 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 994 transitions. [2018-07-23 19:13:08,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-07-23 19:13:08,869 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:13:08,869 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 19:13:08,870 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:13:08,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1316737187, now seen corresponding path program 1 times [2018-07-23 19:13:08,870 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:13:08,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:13:08,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:13:08,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:13:08,872 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:13:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:13:09,175 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:13:09,175 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:13:09,175 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 19:13:09,176 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:13:09,176 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 19:13:09,177 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 19:13:09,177 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 19:13:09,177 INFO L87 Difference]: Start difference. First operand 639 states and 994 transitions. Second operand 6 states. [2018-07-23 19:13:12,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:13:12,213 INFO L93 Difference]: Finished difference Result 1567 states and 2516 transitions. [2018-07-23 19:13:12,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 19:13:12,214 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-07-23 19:13:12,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:13:12,226 INFO L225 Difference]: With dead ends: 1567 [2018-07-23 19:13:12,227 INFO L226 Difference]: Without dead ends: 934 [2018-07-23 19:13:12,231 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 19:13:12,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2018-07-23 19:13:12,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 918. [2018-07-23 19:13:12,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 918 states. [2018-07-23 19:13:12,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1356 transitions. [2018-07-23 19:13:12,287 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1356 transitions. Word has length 117 [2018-07-23 19:13:12,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:13:12,288 INFO L471 AbstractCegarLoop]: Abstraction has 918 states and 1356 transitions. [2018-07-23 19:13:12,288 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 19:13:12,288 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1356 transitions. [2018-07-23 19:13:12,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-23 19:13:12,309 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:13:12,309 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:13:12,309 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:13:12,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1860603607, now seen corresponding path program 1 times [2018-07-23 19:13:12,310 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:13:12,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:13:12,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:13:12,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:13:12,314 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:13:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:13:12,689 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:13:12,689 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:13:12,690 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 19:13:12,690 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:13:12,691 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 19:13:12,692 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 19:13:12,692 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 19:13:12,696 INFO L87 Difference]: Start difference. First operand 918 states and 1356 transitions. Second operand 5 states. [2018-07-23 19:13:16,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:13:16,231 INFO L93 Difference]: Finished difference Result 3237 states and 4897 transitions. [2018-07-23 19:13:16,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 19:13:16,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2018-07-23 19:13:16,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:13:16,253 INFO L225 Difference]: With dead ends: 3237 [2018-07-23 19:13:16,253 INFO L226 Difference]: Without dead ends: 2325 [2018-07-23 19:13:16,262 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-23 19:13:16,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states. [2018-07-23 19:13:16,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 2280. [2018-07-23 19:13:16,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2280 states. [2018-07-23 19:13:16,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3224 transitions. [2018-07-23 19:13:16,352 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3224 transitions. Word has length 139 [2018-07-23 19:13:16,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:13:16,353 INFO L471 AbstractCegarLoop]: Abstraction has 2280 states and 3224 transitions. [2018-07-23 19:13:16,353 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 19:13:16,353 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3224 transitions. [2018-07-23 19:13:16,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-23 19:13:16,358 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:13:16,359 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:13:16,360 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:13:16,360 INFO L82 PathProgramCache]: Analyzing trace with hash 138614259, now seen corresponding path program 1 times [2018-07-23 19:13:16,360 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:13:16,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:13:16,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:13:16,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:13:16,362 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:13:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:13:16,688 WARN L169 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 19:13:17,106 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:13:17,107 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:13:17,107 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 19:13:17,107 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:13:17,108 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 19:13:17,108 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 19:13:17,109 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 19:13:17,109 INFO L87 Difference]: Start difference. First operand 2280 states and 3224 transitions. Second operand 6 states. [2018-07-23 19:13:19,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:13:19,175 INFO L93 Difference]: Finished difference Result 4928 states and 7279 transitions. [2018-07-23 19:13:19,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 19:13:19,186 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-07-23 19:13:19,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:13:19,207 INFO L225 Difference]: With dead ends: 4928 [2018-07-23 19:13:19,208 INFO L226 Difference]: Without dead ends: 2654 [2018-07-23 19:13:19,217 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 19:13:19,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2018-07-23 19:13:19,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2578. [2018-07-23 19:13:19,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2578 states. [2018-07-23 19:13:19,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2578 states to 2578 states and 3502 transitions. [2018-07-23 19:13:19,312 INFO L78 Accepts]: Start accepts. Automaton has 2578 states and 3502 transitions. Word has length 141 [2018-07-23 19:13:19,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:13:19,312 INFO L471 AbstractCegarLoop]: Abstraction has 2578 states and 3502 transitions. [2018-07-23 19:13:19,313 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 19:13:19,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2578 states and 3502 transitions. [2018-07-23 19:13:19,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-07-23 19:13:19,321 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:13:19,321 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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 19:13:19,321 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:13:19,321 INFO L82 PathProgramCache]: Analyzing trace with hash 70947531, now seen corresponding path program 1 times [2018-07-23 19:13:19,322 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:13:19,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:13:19,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:13:19,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:13:19,323 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:13:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:13:19,597 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 22 proven. 73 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 19:13:19,598 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:13:19,598 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:13:19,599 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 196 with the following transitions: [2018-07-23 19:13:19,601 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [634], [816], [817], [818], [819], [821], [822] [2018-07-23 19:13:19,671 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:13:19,671 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:13:24,198 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 19:13:24,200 INFO L272 AbstractInterpreter]: Visited 104 different actions 104 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-07-23 19:13:24,233 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 19:13:26,925 INFO L232 lantSequenceWeakener]: Weakened 187 states. On average, predicates are now at 72.76% of their original sizes. [2018-07-23 19:13:26,925 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 19:13:27,446 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 19:13:27,447 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 19:13:27,448 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-07-23 19:13:27,448 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:13:27,448 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 19:13:27,449 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 19:13:27,449 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-23 19:13:27,449 INFO L87 Difference]: Start difference. First operand 2578 states and 3502 transitions. Second operand 7 states. [2018-07-23 19:13:29,885 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 19:13:44,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:13:44,268 INFO L93 Difference]: Finished difference Result 5296 states and 7196 transitions. [2018-07-23 19:13:44,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 19:13:44,268 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2018-07-23 19:13:44,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:13:44,287 INFO L225 Difference]: With dead ends: 5296 [2018-07-23 19:13:44,288 INFO L226 Difference]: Without dead ends: 2724 [2018-07-23 19:13:44,298 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 195 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-23 19:13:44,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2724 states. [2018-07-23 19:13:44,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2724 to 2722. [2018-07-23 19:13:44,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2722 states. [2018-07-23 19:13:44,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2722 states to 2722 states and 3653 transitions. [2018-07-23 19:13:44,376 INFO L78 Accepts]: Start accepts. Automaton has 2722 states and 3653 transitions. Word has length 195 [2018-07-23 19:13:44,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:13:44,376 INFO L471 AbstractCegarLoop]: Abstraction has 2722 states and 3653 transitions. [2018-07-23 19:13:44,376 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 19:13:44,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2722 states and 3653 transitions. [2018-07-23 19:13:44,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-23 19:13:44,387 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:13:44,387 INFO L353 BasicCegarLoop]: trace histogram [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, 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] [2018-07-23 19:13:44,387 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:13:44,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1329668316, now seen corresponding path program 1 times [2018-07-23 19:13:44,388 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:13:44,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:13:44,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:13:44,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:13:44,389 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:13:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:13:44,905 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 99 proven. 145 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-07-23 19:13:44,905 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:13:44,905 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:13:44,906 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-07-23 19:13:44,906 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [519], [522], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [634], [816], [817], [818], [819], [821], [822] [2018-07-23 19:13:44,911 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:13:44,911 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:13:46,981 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 19:13:57,969 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 19:13:57,970 INFO L272 AbstractInterpreter]: Visited 108 different actions 210 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 19:13:57,976 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 19:14:05,181 INFO L232 lantSequenceWeakener]: Weakened 264 states. On average, predicates are now at 72.84% of their original sizes. [2018-07-23 19:14:05,181 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 19:14:06,540 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 19:14:06,541 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 19:14:06,541 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2018-07-23 19:14:06,541 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:14:06,542 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 19:14:06,543 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 19:14:06,543 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-07-23 19:14:06,543 INFO L87 Difference]: Start difference. First operand 2722 states and 3653 transitions. Second operand 11 states. [2018-07-23 19:14:32,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:14:32,714 INFO L93 Difference]: Finished difference Result 5443 states and 7350 transitions. [2018-07-23 19:14:32,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 19:14:32,714 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 266 [2018-07-23 19:14:32,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:14:32,726 INFO L225 Difference]: With dead ends: 5443 [2018-07-23 19:14:32,727 INFO L226 Difference]: Without dead ends: 2871 [2018-07-23 19:14:32,736 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 273 GetRequests, 250 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2018-07-23 19:14:32,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2018-07-23 19:14:32,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2868. [2018-07-23 19:14:32,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2868 states. [2018-07-23 19:14:32,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2868 states to 2868 states and 3811 transitions. [2018-07-23 19:14:32,808 INFO L78 Accepts]: Start accepts. Automaton has 2868 states and 3811 transitions. Word has length 266 [2018-07-23 19:14:32,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:14:32,808 INFO L471 AbstractCegarLoop]: Abstraction has 2868 states and 3811 transitions. [2018-07-23 19:14:32,808 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 19:14:32,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2868 states and 3811 transitions. [2018-07-23 19:14:32,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-07-23 19:14:32,818 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:14:32,818 INFO L353 BasicCegarLoop]: trace histogram [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, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:14:32,819 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:14:32,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1307690860, now seen corresponding path program 1 times [2018-07-23 19:14:32,819 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:14:32,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:14:32,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:14:32,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:14:32,820 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:14:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:14:33,146 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 39 proven. 159 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-23 19:14:33,147 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:14:33,147 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:14:33,147 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 271 with the following transitions: [2018-07-23 19:14:33,148 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [558], [559], [563], [567], [570], [571], [575], [579], [583], [587], [591], [594], [816], [817], [818], [819], [821], [822] [2018-07-23 19:14:33,152 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:14:33,152 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:14:39,444 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 19:14:39,444 INFO L272 AbstractInterpreter]: Visited 98 different actions 189 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 19:14:39,449 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 19:14:43,932 INFO L232 lantSequenceWeakener]: Weakened 268 states. On average, predicates are now at 72.84% of their original sizes. [2018-07-23 19:14:43,932 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 19:14:44,733 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 19:14:44,734 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 19:14:44,734 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2018-07-23 19:14:44,734 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:14:44,735 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 19:14:44,735 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 19:14:44,735 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-07-23 19:14:44,736 INFO L87 Difference]: Start difference. First operand 2868 states and 3811 transitions. Second operand 11 states. [2018-07-23 19:14:49,864 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 19:15:29,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:15:29,265 INFO L93 Difference]: Finished difference Result 5736 states and 7747 transitions. [2018-07-23 19:15:29,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 19:15:29,265 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 270 [2018-07-23 19:15:29,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:15:29,279 INFO L225 Difference]: With dead ends: 5736 [2018-07-23 19:15:29,279 INFO L226 Difference]: Without dead ends: 3164 [2018-07-23 19:15:29,287 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 276 GetRequests, 254 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-07-23 19:15:29,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2018-07-23 19:15:29,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 3159. [2018-07-23 19:15:29,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3159 states. [2018-07-23 19:15:29,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3159 states to 3159 states and 4122 transitions. [2018-07-23 19:15:29,376 INFO L78 Accepts]: Start accepts. Automaton has 3159 states and 4122 transitions. Word has length 270 [2018-07-23 19:15:29,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:15:29,376 INFO L471 AbstractCegarLoop]: Abstraction has 3159 states and 4122 transitions. [2018-07-23 19:15:29,376 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 19:15:29,377 INFO L276 IsEmpty]: Start isEmpty. Operand 3159 states and 4122 transitions. [2018-07-23 19:15:29,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-07-23 19:15:29,389 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:15:29,389 INFO L353 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:15:29,389 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:15:29,390 INFO L82 PathProgramCache]: Analyzing trace with hash 144161036, now seen corresponding path program 1 times [2018-07-23 19:15:29,390 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:15:29,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:15:29,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:15:29,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:15:29,391 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:15:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:15:29,911 WARN L169 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-07-23 19:15:30,355 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 125 proven. 82 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-07-23 19:15:30,356 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:15:30,356 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:15:30,356 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 307 with the following transitions: [2018-07-23 19:15:30,356 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [570], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [702], [816], [817], [818], [819], [821], [822] [2018-07-23 19:15:30,360 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:15:30,361 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:15:33,468 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 19:15:44,792 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 19:15:44,792 INFO L272 AbstractInterpreter]: Visited 125 different actions 244 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 19:15:44,800 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 19:15:52,757 INFO L232 lantSequenceWeakener]: Weakened 304 states. On average, predicates are now at 72.83% of their original sizes. [2018-07-23 19:15:52,758 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 19:15:53,922 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 19:15:53,923 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 19:15:53,923 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2018-07-23 19:15:53,923 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:15:53,924 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 19:15:53,924 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 19:15:53,924 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-07-23 19:15:53,925 INFO L87 Difference]: Start difference. First operand 3159 states and 4122 transitions. Second operand 12 states. [2018-07-23 19:16:27,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:16:27,053 INFO L93 Difference]: Finished difference Result 5882 states and 7849 transitions. [2018-07-23 19:16:27,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 19:16:27,054 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 306 [2018-07-23 19:16:27,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:16:27,067 INFO L225 Difference]: With dead ends: 5882 [2018-07-23 19:16:27,067 INFO L226 Difference]: Without dead ends: 3310 [2018-07-23 19:16:27,075 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 314 GetRequests, 289 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2018-07-23 19:16:27,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3310 states. [2018-07-23 19:16:27,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3310 to 3305. [2018-07-23 19:16:27,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3305 states. [2018-07-23 19:16:27,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3305 states to 3305 states and 4283 transitions. [2018-07-23 19:16:27,213 INFO L78 Accepts]: Start accepts. Automaton has 3305 states and 4283 transitions. Word has length 306 [2018-07-23 19:16:27,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:16:27,214 INFO L471 AbstractCegarLoop]: Abstraction has 3305 states and 4283 transitions. [2018-07-23 19:16:27,214 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 19:16:27,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3305 states and 4283 transitions. [2018-07-23 19:16:27,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-07-23 19:16:27,227 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:16:27,228 INFO L353 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 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] [2018-07-23 19:16:27,228 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:16:27,228 INFO L82 PathProgramCache]: Analyzing trace with hash 336785383, now seen corresponding path program 1 times [2018-07-23 19:16:27,228 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:16:27,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:16:27,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:16:27,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:16:27,230 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:16:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:16:27,801 WARN L169 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2018-07-23 19:16:28,247 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 51 proven. 232 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 19:16:28,247 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:16:28,247 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:16:28,248 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 326 with the following transitions: [2018-07-23 19:16:28,248 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [570], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [778], [816], [817], [818], [819], [821], [822] [2018-07-23 19:16:28,253 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:16:28,253 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-07-23 19:16:52,628 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-07-23 19:16:52,629 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-07-23 19:16:52,631 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 19:16:52,631 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:16:52,631 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 19:16:52,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:16:52,643 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 19:16:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:16:52,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 19:16:52,857 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-23 19:16:53,058 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 19:16:53,059 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 19:16:53,064 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 19:16:53,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 07:16:53 BoogieIcfgContainer [2018-07-23 19:16:53,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 19:16:53,066 INFO L168 Benchmark]: Toolchain (without parser) took 235295.90 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-07-23 19:16:53,067 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 19:16:53,067 INFO L168 Benchmark]: CACSL2BoogieTranslator took 730.06 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 19:16:53,068 INFO L168 Benchmark]: Boogie Procedure Inliner took 128.25 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 19:16:53,069 INFO L168 Benchmark]: Boogie Preprocessor took 264.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 788.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -878.9 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. [2018-07-23 19:16:53,070 INFO L168 Benchmark]: RCFGBuilder took 4508.61 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: 109.8 MB). Peak memory consumption was 109.8 MB. Max. memory is 7.1 GB. [2018-07-23 19:16:53,071 INFO L168 Benchmark]: TraceAbstraction took 229652.32 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -744.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-23 19:16:53,078 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 730.06 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 128.25 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 264.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 788.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -878.9 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4508.61 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: 109.8 MB). Peak memory consumption was 109.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229652.32 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -744.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 37]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 37). Cancelled while BasicCegarLoop was analyzing trace of length 326 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 229.5s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 133.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1173 SDtfs, 5972 SDslu, 1302 SDs, 0 SdLazy, 7520 SolverSat, 1338 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 73.7s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 1102 GetRequests, 993 SyntacticMatches, 23 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3305occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 62.8s AbstIntTime, 5 AbstIntIterations, 4 AbstIntStrong, 0.9948563351431735 AbsIntWeakeningRatio, 0.1181026137463698 AbsIntAvgWeakeningVarsNumRemoved, 184.972894482091 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 161 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 1553 NumberOfCodeBlocks, 1553 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1544 ConstructedInterpolants, 0 QuantifiedInterpolants, 2043306 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 502/961 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/Problem10_label28_false-unreach-call.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_19-16-53-104.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem10_label28_false-unreach-call.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_19-16-53-104.csv Completed graceful shutdown