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/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:34:53,453 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:34:53,455 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:34:53,475 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:34:53,476 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:34:53,477 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:34:53,478 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:34:53,481 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:34:53,483 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:34:53,484 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:34:53,485 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:34:53,487 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:34:53,488 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:34:53,489 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:34:53,490 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:34:53,491 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:34:53,498 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:34:53,501 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:34:53,504 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:34:53,507 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:34:53,509 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:34:53,510 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:34:53,512 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-24 14:34:53,523 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:34:53,523 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:34:53,525 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:34:53,525 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:34:53,526 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 14:34:53,540 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:34:53,540 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:34:53,541 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:34:53,541 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:34:53,541 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:34:53,542 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:34:53,542 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:34:53,542 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:34:53,542 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:34:53,542 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:34:53,542 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:34:53,543 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:34:53,543 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:34:53,544 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:34:53,544 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:34:53,544 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:34:53,544 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:34:53,544 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:34:53,545 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:34:53,545 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:34:53,545 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:34:53,545 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:34:53,545 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:34:53,546 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:34:53,546 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:34:53,546 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:34:53,546 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:34:53,546 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:34:53,547 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:34:53,547 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:34:53,547 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:34:53,547 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:34:53,547 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:34:53,601 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:34:53,614 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:34:53,618 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:34:53,619 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:34:53,620 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:34:53,620 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label24_true-unreach-call.c [2018-07-24 14:34:53,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6beae75b/96e398ac3cfe41dca275b717d0074174/FLAGc12afda49 [2018-07-24 14:34:54,336 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:34:54,336 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label24_true-unreach-call.c [2018-07-24 14:34:54,362 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6beae75b/96e398ac3cfe41dca275b717d0074174/FLAGc12afda49 [2018-07-24 14:34:54,381 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6beae75b/96e398ac3cfe41dca275b717d0074174 [2018-07-24 14:34:54,396 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:34:54,397 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:34:54,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:34:54,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:34:54,409 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:34:54,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:34:54" (1/1) ... [2018-07-24 14:34:54,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cca5ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:34:54, skipping insertion in model container [2018-07-24 14:34:54,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:34:54" (1/1) ... [2018-07-24 14:34:54,669 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:34:55,316 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:34:55,334 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:34:55,635 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:34:55,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:34:55 WrapperNode [2018-07-24 14:34:55,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:34:55,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:34:55,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:34:55,781 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:34:55,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:34:55" (1/1) ... [2018-07-24 14:34:55,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:34:55" (1/1) ... [2018-07-24 14:34:56,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:34:56,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:34:56,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:34:56,055 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:34:56,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:34:55" (1/1) ... [2018-07-24 14:34:56,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:34:55" (1/1) ... [2018-07-24 14:34:56,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:34:55" (1/1) ... [2018-07-24 14:34:56,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:34:55" (1/1) ... [2018-07-24 14:34:56,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:34:55" (1/1) ... [2018-07-24 14:34:56,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:34:55" (1/1) ... [2018-07-24 14:34:56,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:34:55" (1/1) ... [2018-07-24 14:34:56,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:34:56,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:34:56,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:34:56,805 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:34:56,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:34:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:34:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:34:56,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:34:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:34:56,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:34:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:34:56,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:34:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:34:56,886 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:34:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:34:56,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:35:03,976 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:35:03,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:35:03 BoogieIcfgContainer [2018-07-24 14:35:03,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:35:03,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:35:03,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:35:03,982 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:35:03,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:34:54" (1/3) ... [2018-07-24 14:35:03,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c53f256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:35:03, skipping insertion in model container [2018-07-24 14:35:03,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:34:55" (2/3) ... [2018-07-24 14:35:03,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c53f256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:35:03, skipping insertion in model container [2018-07-24 14:35:03,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:35:03" (3/3) ... [2018-07-24 14:35:03,987 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label24_true-unreach-call.c [2018-07-24 14:35:03,997 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:35:04,005 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:35:04,061 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:35:04,062 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:35:04,062 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:35:04,062 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:35:04,062 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:35:04,062 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:35:04,062 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:35:04,063 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:35:04,063 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:35:04,095 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-07-24 14:35:04,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-07-24 14:35:04,110 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:35:04,112 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:35:04,112 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:35:04,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1048527273, now seen corresponding path program 1 times [2018-07-24 14:35:04,122 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:35:04,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:35:04,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:35:04,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:35:04,171 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:35:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:35:04,577 WARN L169 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:35:04,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:35:04,645 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:35:04,645 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:35:04,646 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:35:04,652 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:35:04,667 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:35:04,667 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:35:04,669 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-07-24 14:35:08,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:35:08,491 INFO L93 Difference]: Finished difference Result 1198 states and 2158 transitions. [2018-07-24 14:35:08,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:35:08,494 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-07-24 14:35:08,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:35:08,523 INFO L225 Difference]: With dead ends: 1198 [2018-07-24 14:35:08,523 INFO L226 Difference]: Without dead ends: 758 [2018-07-24 14:35:08,534 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 [2018-07-24 14:35:08,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2018-07-24 14:35:08,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 754. [2018-07-24 14:35:08,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2018-07-24 14:35:08,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1328 transitions. [2018-07-24 14:35:08,676 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1328 transitions. Word has length 45 [2018-07-24 14:35:08,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:35:08,677 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1328 transitions. [2018-07-24 14:35:08,677 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:35:08,677 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1328 transitions. [2018-07-24 14:35:08,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-24 14:35:08,685 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:35:08,685 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:35:08,686 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:35:08,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1392241716, now seen corresponding path program 1 times [2018-07-24 14:35:08,686 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:35:08,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:35:08,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:35:08,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:35:08,688 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:35:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:35:09,104 WARN L169 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:35:09,165 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:35:09,166 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:35:09,166 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:35:09,166 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:35:09,168 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:35:09,168 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:35:09,169 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:35:09,169 INFO L87 Difference]: Start difference. First operand 754 states and 1328 transitions. Second operand 6 states. [2018-07-24 14:35:19,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:35:19,938 INFO L93 Difference]: Finished difference Result 2146 states and 3813 transitions. [2018-07-24 14:35:19,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:35:19,942 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2018-07-24 14:35:19,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:35:19,953 INFO L225 Difference]: With dead ends: 2146 [2018-07-24 14:35:19,953 INFO L226 Difference]: Without dead ends: 1398 [2018-07-24 14:35:19,959 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:35:19,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2018-07-24 14:35:20,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1382. [2018-07-24 14:35:20,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1382 states. [2018-07-24 14:35:20,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 2175 transitions. [2018-07-24 14:35:20,015 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 2175 transitions. Word has length 119 [2018-07-24 14:35:20,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:35:20,016 INFO L471 AbstractCegarLoop]: Abstraction has 1382 states and 2175 transitions. [2018-07-24 14:35:20,016 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:35:20,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 2175 transitions. [2018-07-24 14:35:20,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-24 14:35:20,021 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:35:20,021 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:35:20,021 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:35:20,022 INFO L82 PathProgramCache]: Analyzing trace with hash 13057476, now seen corresponding path program 1 times [2018-07-24 14:35:20,022 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:35:20,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:35:20,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:35:20,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:35:20,023 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:35:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:35:20,246 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:35:20,247 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:35:20,247 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:35:20,247 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:35:20,248 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:35:20,248 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:35:20,248 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:35:20,249 INFO L87 Difference]: Start difference. First operand 1382 states and 2175 transitions. Second operand 6 states. [2018-07-24 14:35:27,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:35:27,071 INFO L93 Difference]: Finished difference Result 3405 states and 5451 transitions. [2018-07-24 14:35:27,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:35:27,072 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-07-24 14:35:27,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:35:27,085 INFO L225 Difference]: With dead ends: 3405 [2018-07-24 14:35:27,086 INFO L226 Difference]: Without dead ends: 2029 [2018-07-24 14:35:27,093 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 [2018-07-24 14:35:27,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2018-07-24 14:35:27,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 2006. [2018-07-24 14:35:27,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2006 states. [2018-07-24 14:35:27,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 2895 transitions. [2018-07-24 14:35:27,152 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 2895 transitions. Word has length 131 [2018-07-24 14:35:27,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:35:27,153 INFO L471 AbstractCegarLoop]: Abstraction has 2006 states and 2895 transitions. [2018-07-24 14:35:27,153 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:35:27,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 2895 transitions. [2018-07-24 14:35:27,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-07-24 14:35:27,156 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:35:27,156 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:35:27,156 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:35:27,157 INFO L82 PathProgramCache]: Analyzing trace with hash -679138064, now seen corresponding path program 1 times [2018-07-24 14:35:27,157 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:35:27,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:35:27,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:35:27,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:35:27,158 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:35:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:35:27,314 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:35:27,314 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:35:27,315 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:35:27,315 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:35:27,315 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:35:27,316 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:35:27,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:35:27,316 INFO L87 Difference]: Start difference. First operand 2006 states and 2895 transitions. Second operand 6 states. [2018-07-24 14:35:37,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:35:37,666 INFO L93 Difference]: Finished difference Result 6522 states and 9680 transitions. [2018-07-24 14:35:37,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:35:37,667 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-07-24 14:35:37,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:35:37,694 INFO L225 Difference]: With dead ends: 6522 [2018-07-24 14:35:37,695 INFO L226 Difference]: Without dead ends: 4522 [2018-07-24 14:35:37,710 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:35:37,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4522 states. [2018-07-24 14:35:37,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4522 to 4440. [2018-07-24 14:35:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4440 states. [2018-07-24 14:35:37,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4440 states to 4440 states and 5665 transitions. [2018-07-24 14:35:37,843 INFO L78 Accepts]: Start accepts. Automaton has 4440 states and 5665 transitions. Word has length 137 [2018-07-24 14:35:37,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:35:37,843 INFO L471 AbstractCegarLoop]: Abstraction has 4440 states and 5665 transitions. [2018-07-24 14:35:37,844 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:35:37,844 INFO L276 IsEmpty]: Start isEmpty. Operand 4440 states and 5665 transitions. [2018-07-24 14:35:37,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-07-24 14:35:37,848 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:35:37,848 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:35:37,848 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:35:37,848 INFO L82 PathProgramCache]: Analyzing trace with hash 993600349, now seen corresponding path program 1 times [2018-07-24 14:35:37,849 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:35:37,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:35:37,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:35:37,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:35:37,850 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:35:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:35:38,223 WARN L169 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:35:38,284 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:35:38,284 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:35:38,285 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:35:38,285 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:35:38,285 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:35:38,286 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:35:38,286 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:35:38,286 INFO L87 Difference]: Start difference. First operand 4440 states and 5665 transitions. Second operand 6 states. [2018-07-24 14:35:43,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:35:43,195 INFO L93 Difference]: Finished difference Result 10489 states and 13767 transitions. [2018-07-24 14:35:43,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:35:43,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2018-07-24 14:35:43,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:35:43,227 INFO L225 Difference]: With dead ends: 10489 [2018-07-24 14:35:43,227 INFO L226 Difference]: Without dead ends: 6055 [2018-07-24 14:35:43,246 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:35:43,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6055 states. [2018-07-24 14:35:43,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6055 to 6006. [2018-07-24 14:35:43,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6006 states. [2018-07-24 14:35:43,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6006 states to 6006 states and 7476 transitions. [2018-07-24 14:35:43,384 INFO L78 Accepts]: Start accepts. Automaton has 6006 states and 7476 transitions. Word has length 172 [2018-07-24 14:35:43,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:35:43,384 INFO L471 AbstractCegarLoop]: Abstraction has 6006 states and 7476 transitions. [2018-07-24 14:35:43,385 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:35:43,385 INFO L276 IsEmpty]: Start isEmpty. Operand 6006 states and 7476 transitions. [2018-07-24 14:35:43,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-07-24 14:35:43,391 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:35:43,391 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:35:43,391 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:35:43,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1515525461, now seen corresponding path program 1 times [2018-07-24 14:35:43,392 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:35:43,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:35:43,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:35:43,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:35:43,393 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:35:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:35:43,679 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 3 [2018-07-24 14:35:43,702 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 14:35:43,703 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:35:43,703 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:35:43,703 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:35:43,704 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:35:43,704 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:35:43,704 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:35:43,705 INFO L87 Difference]: Start difference. First operand 6006 states and 7476 transitions. Second operand 3 states. [2018-07-24 14:35:48,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:35:48,256 INFO L93 Difference]: Finished difference Result 17050 states and 21824 transitions. [2018-07-24 14:35:48,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:35:48,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2018-07-24 14:35:48,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:35:48,310 INFO L225 Difference]: With dead ends: 17050 [2018-07-24 14:35:48,311 INFO L226 Difference]: Without dead ends: 11050 [2018-07-24 14:35:48,344 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:35:48,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11050 states. [2018-07-24 14:35:48,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11050 to 11023. [2018-07-24 14:35:48,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11023 states. [2018-07-24 14:35:48,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11023 states to 11023 states and 13899 transitions. [2018-07-24 14:35:48,592 INFO L78 Accepts]: Start accepts. Automaton has 11023 states and 13899 transitions. Word has length 213 [2018-07-24 14:35:48,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:35:48,593 INFO L471 AbstractCegarLoop]: Abstraction has 11023 states and 13899 transitions. [2018-07-24 14:35:48,593 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:35:48,593 INFO L276 IsEmpty]: Start isEmpty. Operand 11023 states and 13899 transitions. [2018-07-24 14:35:48,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-24 14:35:48,605 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:35:48,605 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:35:48,605 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:35:48,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1691819665, now seen corresponding path program 1 times [2018-07-24 14:35:48,606 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:35:48,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:35:48,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:35:48,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:35:48,607 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:35:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:35:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 14:35:49,274 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:35:49,275 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 [2018-07-24 14:35:49,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:35:49,290 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:35:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:35:49,422 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:35:50,712 WARN L169 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-07-24 14:35:50,774 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-07-24 14:35:50,774 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:35:51,675 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 76 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:35:51,697 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:35:51,697 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-07-24 14:35:51,697 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:35:51,698 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:35:51,698 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:35:51,698 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:35:51,698 INFO L87 Difference]: Start difference. First operand 11023 states and 13899 transitions. Second operand 5 states. [2018-07-24 14:36:01,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:36:01,660 INFO L93 Difference]: Finished difference Result 23469 states and 29564 transitions. [2018-07-24 14:36:01,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:36:01,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 226 [2018-07-24 14:36:01,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:36:01,717 INFO L225 Difference]: With dead ends: 23469 [2018-07-24 14:36:01,717 INFO L226 Difference]: Without dead ends: 12452 [2018-07-24 14:36:01,767 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 449 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-07-24 14:36:01,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12452 states. [2018-07-24 14:36:02,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12452 to 12163. [2018-07-24 14:36:02,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12163 states. [2018-07-24 14:36:02,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12163 states to 12163 states and 15177 transitions. [2018-07-24 14:36:02,072 INFO L78 Accepts]: Start accepts. Automaton has 12163 states and 15177 transitions. Word has length 226 [2018-07-24 14:36:02,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:36:02,072 INFO L471 AbstractCegarLoop]: Abstraction has 12163 states and 15177 transitions. [2018-07-24 14:36:02,072 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:36:02,073 INFO L276 IsEmpty]: Start isEmpty. Operand 12163 states and 15177 transitions. [2018-07-24 14:36:02,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-07-24 14:36:02,085 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:36:02,086 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:36:02,086 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:36:02,086 INFO L82 PathProgramCache]: Analyzing trace with hash -164335781, now seen corresponding path program 1 times [2018-07-24 14:36:02,087 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:36:02,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:36:02,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:36:02,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:36:02,089 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:36:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:36:02,803 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 79 proven. 87 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-07-24 14:36:02,803 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:36:02,803 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:36:02,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:36:02,812 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:36:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:36:02,915 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:36:03,121 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-07-24 14:36:03,121 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:36:03,683 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-07-24 14:36:03,723 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:36:03,724 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 11 [2018-07-24 14:36:03,724 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:36:03,726 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:36:03,726 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:36:03,726 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:36:03,727 INFO L87 Difference]: Start difference. First operand 12163 states and 15177 transitions. Second operand 5 states. [2018-07-24 14:36:09,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:36:09,123 INFO L93 Difference]: Finished difference Result 35189 states and 44757 transitions. [2018-07-24 14:36:09,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:36:09,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 265 [2018-07-24 14:36:09,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:36:09,208 INFO L225 Difference]: With dead ends: 35189 [2018-07-24 14:36:09,209 INFO L226 Difference]: Without dead ends: 23340 [2018-07-24 14:36:09,236 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 527 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:36:09,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23340 states. [2018-07-24 14:36:09,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23340 to 22913. [2018-07-24 14:36:09,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22913 states. [2018-07-24 14:36:09,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22913 states to 22913 states and 26966 transitions. [2018-07-24 14:36:09,662 INFO L78 Accepts]: Start accepts. Automaton has 22913 states and 26966 transitions. Word has length 265 [2018-07-24 14:36:09,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:36:09,663 INFO L471 AbstractCegarLoop]: Abstraction has 22913 states and 26966 transitions. [2018-07-24 14:36:09,663 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:36:09,664 INFO L276 IsEmpty]: Start isEmpty. Operand 22913 states and 26966 transitions. [2018-07-24 14:36:09,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-07-24 14:36:09,685 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:36:09,685 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:36:09,686 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:36:09,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1280284773, now seen corresponding path program 1 times [2018-07-24 14:36:09,686 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:36:09,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:36:09,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:36:09,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:36:09,688 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:36:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:36:10,816 WARN L169 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-24 14:36:11,261 WARN L169 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-07-24 14:36:11,430 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 198 proven. 169 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:36:11,430 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:36:11,430 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:36:11,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:36:11,441 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:36:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:36:11,560 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:36:11,781 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 307 proven. 26 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-07-24 14:36:11,781 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:36:12,333 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 124 proven. 243 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:36:12,354 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:36:12,354 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:36:12,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:36:12,371 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:36:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:36:12,624 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:36:12,948 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 257 proven. 26 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-07-24 14:36:12,949 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:36:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 124 proven. 243 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:36:13,671 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:36:13,672 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9, 8, 9] total 24 [2018-07-24 14:36:13,672 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:36:13,672 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 14:36:13,673 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 14:36:13,673 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2018-07-24 14:36:13,673 INFO L87 Difference]: Start difference. First operand 22913 states and 26966 transitions. Second operand 14 states. [2018-07-24 14:36:44,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:36:44,969 INFO L93 Difference]: Finished difference Result 62355 states and 76060 transitions. [2018-07-24 14:36:44,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-24 14:36:44,970 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 322 [2018-07-24 14:36:44,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:36:45,096 INFO L225 Difference]: With dead ends: 62355 [2018-07-24 14:36:45,097 INFO L226 Difference]: Without dead ends: 38867 [2018-07-24 14:36:45,168 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1346 GetRequests, 1298 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=527, Invalid=1729, Unknown=0, NotChecked=0, Total=2256 [2018-07-24 14:36:45,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38867 states. [2018-07-24 14:36:45,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38867 to 36260. [2018-07-24 14:36:45,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36260 states. [2018-07-24 14:36:45,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36260 states to 36260 states and 42962 transitions. [2018-07-24 14:36:45,788 INFO L78 Accepts]: Start accepts. Automaton has 36260 states and 42962 transitions. Word has length 322 [2018-07-24 14:36:45,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:36:45,789 INFO L471 AbstractCegarLoop]: Abstraction has 36260 states and 42962 transitions. [2018-07-24 14:36:45,789 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 14:36:45,789 INFO L276 IsEmpty]: Start isEmpty. Operand 36260 states and 42962 transitions. [2018-07-24 14:36:45,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2018-07-24 14:36:45,818 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:36:45,818 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:36:45,818 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:36:45,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1448554482, now seen corresponding path program 1 times [2018-07-24 14:36:45,819 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:36:45,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:36:45,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:36:45,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:36:45,820 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:36:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:36:47,120 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 198 proven. 173 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:36:47,120 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:36:47,121 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:36:47,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:36:47,128 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:36:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:36:47,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:36:47,551 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 311 proven. 26 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-07-24 14:36:47,551 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:36:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 124 proven. 247 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:36:48,098 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:36:48,099 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:36:48,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:36:48,115 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:36:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:36:48,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:36:49,409 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 261 proven. 26 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-07-24 14:36:49,410 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:36:50,308 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 124 proven. 247 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:36:50,310 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:36:50,310 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9, 8, 9] total 24 [2018-07-24 14:36:50,310 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:36:50,311 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 14:36:50,311 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 14:36:50,311 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2018-07-24 14:36:50,312 INFO L87 Difference]: Start difference. First operand 36260 states and 42962 transitions. Second operand 14 states. [2018-07-24 14:37:22,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:37:22,878 INFO L93 Difference]: Finished difference Result 75588 states and 90388 transitions. [2018-07-24 14:37:22,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-24 14:37:22,878 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 407 [2018-07-24 14:37:22,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:37:22,995 INFO L225 Difference]: With dead ends: 75588 [2018-07-24 14:37:22,995 INFO L226 Difference]: Without dead ends: 38751 [2018-07-24 14:37:23,070 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1686 GetRequests, 1635 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=524, Invalid=1732, Unknown=0, NotChecked=0, Total=2256 [2018-07-24 14:37:23,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38751 states. [2018-07-24 14:37:23,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38751 to 35916. [2018-07-24 14:37:23,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35916 states. [2018-07-24 14:37:23,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35916 states to 35916 states and 42266 transitions. [2018-07-24 14:37:23,697 INFO L78 Accepts]: Start accepts. Automaton has 35916 states and 42266 transitions. Word has length 407 [2018-07-24 14:37:23,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:37:23,698 INFO L471 AbstractCegarLoop]: Abstraction has 35916 states and 42266 transitions. [2018-07-24 14:37:23,698 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 14:37:23,698 INFO L276 IsEmpty]: Start isEmpty. Operand 35916 states and 42266 transitions. [2018-07-24 14:37:23,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2018-07-24 14:37:23,726 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:37:23,727 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:37:23,727 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:37:23,727 INFO L82 PathProgramCache]: Analyzing trace with hash -323884306, now seen corresponding path program 1 times [2018-07-24 14:37:23,728 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:37:23,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:37:23,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:37:23,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:37:23,729 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:37:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:37:24,478 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 125 proven. 169 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-07-24 14:37:24,479 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:37:24,479 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:37:24,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:37:24,489 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:37:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:37:24,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:37:25,144 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 335 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-07-24 14:37:25,145 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:37:25,493 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 198 proven. 80 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-07-24 14:37:25,514 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:37:25,514 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:37:25,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:37:25,531 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:37:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:37:25,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:37:26,092 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 257 proven. 2 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-07-24 14:37:26,092 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:37:26,919 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 122 proven. 171 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-24 14:37:26,921 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:37:26,922 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 18 [2018-07-24 14:37:26,922 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:37:26,923 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 14:37:26,923 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 14:37:26,924 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2018-07-24 14:37:26,924 INFO L87 Difference]: Start difference. First operand 35916 states and 42266 transitions. Second operand 11 states. [2018-07-24 14:37:47,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:37:47,377 INFO L93 Difference]: Finished difference Result 112774 states and 142936 transitions. [2018-07-24 14:37:47,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-07-24 14:37:47,378 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 464 [2018-07-24 14:37:47,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:37:47,659 INFO L225 Difference]: With dead ends: 112774 [2018-07-24 14:37:47,660 INFO L226 Difference]: Without dead ends: 77117 [2018-07-24 14:37:47,787 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1932 GetRequests, 1868 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=727, Invalid=3179, Unknown=0, NotChecked=0, Total=3906 [2018-07-24 14:37:47,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77117 states. [2018-07-24 14:37:48,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77117 to 73536. [2018-07-24 14:37:48,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73536 states. [2018-07-24 14:37:49,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73536 states to 73536 states and 86452 transitions. [2018-07-24 14:37:49,163 INFO L78 Accepts]: Start accepts. Automaton has 73536 states and 86452 transitions. Word has length 464 [2018-07-24 14:37:49,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:37:49,163 INFO L471 AbstractCegarLoop]: Abstraction has 73536 states and 86452 transitions. [2018-07-24 14:37:49,163 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 14:37:49,164 INFO L276 IsEmpty]: Start isEmpty. Operand 73536 states and 86452 transitions. [2018-07-24 14:37:49,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2018-07-24 14:37:49,197 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:37:49,198 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:37:49,198 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:37:49,198 INFO L82 PathProgramCache]: Analyzing trace with hash 2050754305, now seen corresponding path program 1 times [2018-07-24 14:37:49,198 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:37:49,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:37:49,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:37:49,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:37:49,199 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:37:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:37:49,669 WARN L169 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:37:51,098 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 195 proven. 86 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-07-24 14:37:51,098 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:37:51,099 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:37:51,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:37:51,117 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:37:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:37:51,321 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:37:51,953 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 14:37:51,953 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:37:52,211 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 14:37:52,232 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:37:52,232 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:37:52,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:37:52,248 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:37:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:37:52,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:37:52,849 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 14:37:52,849 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:37:53,165 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 14:37:53,167 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:37:53,167 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 13 [2018-07-24 14:37:53,168 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:37:53,169 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 14:37:53,169 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 14:37:53,170 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:37:53,170 INFO L87 Difference]: Start difference. First operand 73536 states and 86452 transitions. Second operand 11 states. [2018-07-24 14:38:03,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:38:03,706 INFO L93 Difference]: Finished difference Result 150911 states and 180273 transitions. [2018-07-24 14:38:03,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-24 14:38:03,706 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 552 [2018-07-24 14:38:03,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:38:03,956 INFO L225 Difference]: With dead ends: 150911 [2018-07-24 14:38:03,957 INFO L226 Difference]: Without dead ends: 77689 [2018-07-24 14:38:04,186 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2247 GetRequests, 2212 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2018-07-24 14:38:04,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77689 states. [2018-07-24 14:38:05,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77689 to 75942. [2018-07-24 14:38:05,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75942 states. [2018-07-24 14:38:05,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75942 states to 75942 states and 84763 transitions. [2018-07-24 14:38:05,437 INFO L78 Accepts]: Start accepts. Automaton has 75942 states and 84763 transitions. Word has length 552 [2018-07-24 14:38:05,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:38:05,438 INFO L471 AbstractCegarLoop]: Abstraction has 75942 states and 84763 transitions. [2018-07-24 14:38:05,438 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 14:38:05,438 INFO L276 IsEmpty]: Start isEmpty. Operand 75942 states and 84763 transitions. [2018-07-24 14:38:05,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2018-07-24 14:38:05,465 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:38:05,465 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:38:05,466 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:38:05,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1217759884, now seen corresponding path program 1 times [2018-07-24 14:38:05,466 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:38:05,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:38:05,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:38:05,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:38:05,467 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:38:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:38:06,004 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2018-07-24 14:38:06,004 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:38:06,004 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:38:06,004 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:38:06,005 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:38:06,005 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:38:06,006 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:38:06,006 INFO L87 Difference]: Start difference. First operand 75942 states and 84763 transitions. Second operand 3 states. [2018-07-24 14:38:09,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:38:09,959 INFO L93 Difference]: Finished difference Result 181431 states and 206706 transitions. [2018-07-24 14:38:09,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:38:09,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 553 [2018-07-24 14:38:09,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:38:10,274 INFO L225 Difference]: With dead ends: 181431 [2018-07-24 14:38:10,274 INFO L226 Difference]: Without dead ends: 83133 [2018-07-24 14:38:10,496 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:38:10,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83133 states. [2018-07-24 14:38:11,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83133 to 81144. [2018-07-24 14:38:11,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81144 states. [2018-07-24 14:38:11,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81144 states to 81144 states and 89601 transitions. [2018-07-24 14:38:11,728 INFO L78 Accepts]: Start accepts. Automaton has 81144 states and 89601 transitions. Word has length 553 [2018-07-24 14:38:11,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:38:11,729 INFO L471 AbstractCegarLoop]: Abstraction has 81144 states and 89601 transitions. [2018-07-24 14:38:11,729 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:38:11,729 INFO L276 IsEmpty]: Start isEmpty. Operand 81144 states and 89601 transitions. [2018-07-24 14:38:11,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2018-07-24 14:38:11,737 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:38:11,738 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:38:11,738 INFO L414 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:38:11,738 INFO L82 PathProgramCache]: Analyzing trace with hash 297701857, now seen corresponding path program 1 times [2018-07-24 14:38:11,739 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:38:11,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:38:11,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:38:11,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:38:11,740 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:38:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:38:12,179 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2018-07-24 14:38:12,180 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:38:12,180 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:38:12,180 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:38:12,181 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:38:12,181 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:38:12,182 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:38:12,182 INFO L87 Difference]: Start difference. First operand 81144 states and 89601 transitions. Second operand 4 states. [2018-07-24 14:38:17,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:38:17,118 INFO L93 Difference]: Finished difference Result 191192 states and 215849 transitions. [2018-07-24 14:38:17,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:38:17,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 558 [2018-07-24 14:38:17,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:38:17,497 INFO L225 Difference]: With dead ends: 191192 [2018-07-24 14:38:17,497 INFO L226 Difference]: Without dead ends: 112024 [2018-07-24 14:38:17,707 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 [2018-07-24 14:38:17,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112024 states. [2018-07-24 14:38:18,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112024 to 110315. [2018-07-24 14:38:18,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110315 states. [2018-07-24 14:38:19,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110315 states to 110315 states and 121264 transitions. [2018-07-24 14:38:19,214 INFO L78 Accepts]: Start accepts. Automaton has 110315 states and 121264 transitions. Word has length 558 [2018-07-24 14:38:19,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:38:19,215 INFO L471 AbstractCegarLoop]: Abstraction has 110315 states and 121264 transitions. [2018-07-24 14:38:19,215 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:38:19,215 INFO L276 IsEmpty]: Start isEmpty. Operand 110315 states and 121264 transitions. [2018-07-24 14:38:19,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2018-07-24 14:38:19,238 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:38:19,239 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:38:19,239 INFO L414 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:38:19,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1088889056, now seen corresponding path program 1 times [2018-07-24 14:38:19,239 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:38:19,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:38:19,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:38:19,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:38:19,240 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:38:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:38:20,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 831 trivial. 0 not checked. [2018-07-24 14:38:20,306 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:38:20,306 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:38:20,306 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:38:20,307 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:38:20,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:38:20,307 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:38:20,307 INFO L87 Difference]: Start difference. First operand 110315 states and 121264 transitions. Second operand 3 states. [2018-07-24 14:38:23,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:38:23,837 INFO L93 Difference]: Finished difference Result 182020 states and 200930 transitions. [2018-07-24 14:38:23,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:38:23,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 682 [2018-07-24 14:38:23,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:38:24,013 INFO L225 Difference]: With dead ends: 182020 [2018-07-24 14:38:24,014 INFO L226 Difference]: Without dead ends: 79135 [2018-07-24 14:38:24,226 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:38:24,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79135 states. [2018-07-24 14:38:25,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79135 to 76494. [2018-07-24 14:38:25,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76494 states. [2018-07-24 14:38:25,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76494 states to 76494 states and 82640 transitions. [2018-07-24 14:38:25,376 INFO L78 Accepts]: Start accepts. Automaton has 76494 states and 82640 transitions. Word has length 682 [2018-07-24 14:38:25,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:38:25,377 INFO L471 AbstractCegarLoop]: Abstraction has 76494 states and 82640 transitions. [2018-07-24 14:38:25,377 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:38:25,378 INFO L276 IsEmpty]: Start isEmpty. Operand 76494 states and 82640 transitions. [2018-07-24 14:38:25,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2018-07-24 14:38:25,410 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:38:25,411 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:38:25,411 INFO L414 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:38:25,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1915310461, now seen corresponding path program 1 times [2018-07-24 14:38:25,411 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:38:25,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:38:25,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:38:25,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:38:25,414 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:38:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:38:26,511 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 531 proven. 2 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2018-07-24 14:38:26,512 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:38:26,512 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:38:26,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:38:26,942 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:38:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:38:27,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-07-24 14:38:53,755 WARN L177 SmtUtils]: Removed 3 from assertion stack [2018-07-24 14:38:53,755 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-24 14:38:53,956 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:38:53,956 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:38:53,962 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:38:53,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:38:53 BoogieIcfgContainer [2018-07-24 14:38:53,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:38:53,963 INFO L168 Benchmark]: Toolchain (without parser) took 239567.02 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 643.0 MB. Max. memory is 7.1 GB. [2018-07-24 14:38:53,964 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-07-24 14:38:53,965 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1378.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-07-24 14:38:53,966 INFO L168 Benchmark]: Boogie Procedure Inliner took 274.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:38:53,966 INFO L168 Benchmark]: Boogie Preprocessor took 749.72 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 890.8 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 89.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:38:53,967 INFO L168 Benchmark]: RCFGBuilder took 7172.54 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 326.8 MB). Peak memory consumption was 326.8 MB. Max. memory is 7.1 GB. [2018-07-24 14:38:53,968 INFO L168 Benchmark]: TraceAbstraction took 229984.00 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 303.9 MB. Max. memory is 7.1 GB. [2018-07-24 14:38:53,972 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 1378.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 274.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 749.72 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 890.8 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 89.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7172.54 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 326.8 MB). Peak memory consumption was 326.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229984.00 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 303.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 121). Cancelled while BasicCegarLoop was analyzing trace of length 698 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 415. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 229.9s OverallTime, 16 OverallIterations, 6 TraceHistogramMax, 167.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4004 SDtfs, 32436 SDslu, 4678 SDs, 0 SdLazy, 58374 SolverSat, 10570 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 139.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8274 GetRequests, 8012 SyntacticMatches, 28 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2533 ImplicationChecksByTransitivity, 12.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110315occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 18026 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 18.6s InterpolantComputationTime, 8827 NumberOfCodeBlocks, 8827 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 12773 ConstructedInterpolants, 2 QuantifiedInterpolants, 22436268 SizeOfPredicates, 32 NumberOfNonLiveVariables, 6125 ConjunctsInSsa, 139 ConjunctsInUnsatCore, 35 InterpolantComputations, 12 PerfectInterpolantSequences, 8717/10826 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/Problem15_label24_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-38-53-986.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label24_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-38-53-986.csv Completed graceful shutdown