java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label21_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 12:17:50,453 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 12:17:50,455 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 12:17:50,468 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 12:17:50,469 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 12:17:50,470 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 12:17:50,472 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 12:17:50,474 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 12:17:50,476 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 12:17:50,477 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 12:17:50,479 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 12:17:50,480 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 12:17:50,480 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 12:17:50,486 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 12:17:50,488 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 12:17:50,489 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 12:17:50,492 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 12:17:50,494 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 12:17:50,500 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 12:17:50,502 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 12:17:50,503 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 12:17:50,504 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 12:17:50,506 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 12:17:50,506 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 12:17:50,506 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 12:17:50,507 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 12:17:50,508 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 12:17:50,509 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 12:17:50,510 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 12:17:50,510 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 12:17:50,511 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 12:17:50,511 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 12:17:50,512 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 12:17:50,512 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 12:17:50,513 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 12:17:50,513 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 12:17:50,513 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 [2018-09-10 12:17:50,531 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 12:17:50,532 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 12:17:50,532 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 12:17:50,533 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 12:17:50,533 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 12:17:50,533 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 12:17:50,533 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 12:17:50,533 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 12:17:50,534 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 12:17:50,534 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 12:17:50,534 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 12:17:50,535 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 12:17:50,535 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 12:17:50,535 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 12:17:50,535 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 12:17:50,536 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 12:17:50,536 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 12:17:50,536 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 12:17:50,536 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 12:17:50,537 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 12:17:50,537 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 12:17:50,537 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 12:17:50,537 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 12:17:50,537 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:17:50,538 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 12:17:50,538 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 12:17:50,538 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 12:17:50,538 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 12:17:50,538 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 12:17:50,539 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 12:17:50,539 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 12:17:50,539 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 12:17:50,539 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 12:17:50,586 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 12:17:50,602 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 12:17:50,609 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 12:17:50,610 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 12:17:50,611 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 12:17:50,611 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label21_true-unreach-call.c [2018-09-10 12:17:50,950 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a757f992f/0af7955c2cc54a699e1548765c7e5be7/FLAG6891e0d66 [2018-09-10 12:17:51,323 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 12:17:51,323 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label21_true-unreach-call.c [2018-09-10 12:17:51,344 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a757f992f/0af7955c2cc54a699e1548765c7e5be7/FLAG6891e0d66 [2018-09-10 12:17:51,360 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a757f992f/0af7955c2cc54a699e1548765c7e5be7 [2018-09-10 12:17:51,371 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 12:17:51,374 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 12:17:51,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 12:17:51,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 12:17:51,382 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 12:17:51,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:17:51" (1/1) ... [2018-09-10 12:17:51,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72289f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:17:51, skipping insertion in model container [2018-09-10 12:17:51,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:17:51" (1/1) ... [2018-09-10 12:17:51,642 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 12:17:52,221 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:17:52,242 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 12:17:52,537 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:17:52,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:17:52 WrapperNode [2018-09-10 12:17:52,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 12:17:52,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 12:17:52,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 12:17:52,650 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 12:17:52,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:17:52" (1/1) ... [2018-09-10 12:17:52,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:17:52" (1/1) ... [2018-09-10 12:17:52,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 12:17:52,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 12:17:52,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 12:17:52,870 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 12:17:53,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:17:52" (1/1) ... [2018-09-10 12:17:53,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:17:52" (1/1) ... [2018-09-10 12:17:53,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:17:52" (1/1) ... [2018-09-10 12:17:53,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:17:52" (1/1) ... [2018-09-10 12:17:53,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:17:52" (1/1) ... [2018-09-10 12:17:53,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:17:52" (1/1) ... [2018-09-10 12:17:53,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:17:52" (1/1) ... [2018-09-10 12:17:53,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 12:17:53,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 12:17:53,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 12:17:53,348 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 12:17:53,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:17:52" (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 [2018-09-10 12:17:53,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 12:17:53,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 12:17:53,418 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 [2018-09-10 12:17:53,419 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 [2018-09-10 12:17:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 12:17:53,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 12:17:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 12:17:53,419 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 12:17:53,419 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 [2018-09-10 12:17:53,420 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 [2018-09-10 12:17:59,779 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 12:17:59,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:17:59 BoogieIcfgContainer [2018-09-10 12:17:59,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 12:17:59,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 12:17:59,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 12:17:59,785 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 12:17:59,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 12:17:51" (1/3) ... [2018-09-10 12:17:59,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef17b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:17:59, skipping insertion in model container [2018-09-10 12:17:59,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:17:52" (2/3) ... [2018-09-10 12:17:59,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef17b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:17:59, skipping insertion in model container [2018-09-10 12:17:59,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:17:59" (3/3) ... [2018-09-10 12:17:59,790 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label21_true-unreach-call.c [2018-09-10 12:17:59,801 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 12:17:59,812 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 12:17:59,873 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 12:17:59,874 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 12:17:59,874 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 12:17:59,875 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 12:17:59,875 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 12:17:59,875 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 12:17:59,875 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 12:17:59,875 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 12:17:59,875 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 12:17:59,907 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-09-10 12:17:59,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-09-10 12:17:59,916 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:17:59,918 INFO L376 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] [2018-09-10 12:17:59,919 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:17:59,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1517066601, now seen corresponding path program 1 times [2018-09-10 12:17:59,929 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:17:59,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:17:59,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:17:59,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:17:59,977 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:18:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:18:00,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:18:00,464 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:18:00,464 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 12:18:00,465 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:18:00,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:18:00,488 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:18:00,489 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:18:00,492 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-09-10 12:18:07,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:18:07,214 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-09-10 12:18:07,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:18:07,217 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2018-09-10 12:18:07,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:18:07,245 INFO L225 Difference]: With dead ends: 1513 [2018-09-10 12:18:07,245 INFO L226 Difference]: Without dead ends: 1097 [2018-09-10 12:18:07,256 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:18:07,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-09-10 12:18:07,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 744. [2018-09-10 12:18:07,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-09-10 12:18:07,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1301 transitions. [2018-09-10 12:18:07,370 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1301 transitions. Word has length 45 [2018-09-10 12:18:07,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:18:07,371 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1301 transitions. [2018-09-10 12:18:07,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:18:07,371 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1301 transitions. [2018-09-10 12:18:07,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-09-10 12:18:07,378 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:18:07,378 INFO L376 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] [2018-09-10 12:18:07,379 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:18:07,379 INFO L82 PathProgramCache]: Analyzing trace with hash -2092302891, now seen corresponding path program 1 times [2018-09-10 12:18:07,379 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:18:07,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:18:07,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:18:07,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:18:07,381 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:18:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:18:07,689 WARN L175 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:18:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:18:07,747 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:18:07,747 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:18:07,747 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:18:07,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:18:07,750 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:18:07,750 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:18:07,750 INFO L87 Difference]: Start difference. First operand 744 states and 1301 transitions. Second operand 6 states. [2018-09-10 12:18:12,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:18:12,356 INFO L93 Difference]: Finished difference Result 2196 states and 3924 transitions. [2018-09-10 12:18:12,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:18:12,365 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-09-10 12:18:12,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:18:12,381 INFO L225 Difference]: With dead ends: 2196 [2018-09-10 12:18:12,382 INFO L226 Difference]: Without dead ends: 1458 [2018-09-10 12:18:12,386 INFO L604 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 [2018-09-10 12:18:12,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2018-09-10 12:18:12,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1438. [2018-09-10 12:18:12,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1438 states. [2018-09-10 12:18:12,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2463 transitions. [2018-09-10 12:18:12,480 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2463 transitions. Word has length 116 [2018-09-10 12:18:12,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:18:12,481 INFO L480 AbstractCegarLoop]: Abstraction has 1438 states and 2463 transitions. [2018-09-10 12:18:12,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:18:12,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2463 transitions. [2018-09-10 12:18:12,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-09-10 12:18:12,489 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:18:12,489 INFO L376 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] [2018-09-10 12:18:12,490 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:18:12,491 INFO L82 PathProgramCache]: Analyzing trace with hash 767516542, now seen corresponding path program 1 times [2018-09-10 12:18:12,491 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:18:12,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:18:12,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:18:12,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:18:12,492 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:18:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:18:12,819 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:18:12,819 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:18:12,819 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 12:18:12,820 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:18:12,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:18:12,820 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:18:12,821 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 12:18:12,821 INFO L87 Difference]: Start difference. First operand 1438 states and 2463 transitions. Second operand 5 states. [2018-09-10 12:18:17,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:18:17,556 INFO L93 Difference]: Finished difference Result 3597 states and 6200 transitions. [2018-09-10 12:18:17,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:18:17,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2018-09-10 12:18:17,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:18:17,571 INFO L225 Difference]: With dead ends: 3597 [2018-09-10 12:18:17,571 INFO L226 Difference]: Without dead ends: 2165 [2018-09-10 12:18:17,577 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:18:17,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2018-09-10 12:18:17,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 2145. [2018-09-10 12:18:17,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2145 states. [2018-09-10 12:18:17,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 3126 transitions. [2018-09-10 12:18:17,643 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 3126 transitions. Word has length 117 [2018-09-10 12:18:17,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:18:17,644 INFO L480 AbstractCegarLoop]: Abstraction has 2145 states and 3126 transitions. [2018-09-10 12:18:17,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:18:17,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 3126 transitions. [2018-09-10 12:18:17,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-09-10 12:18:17,649 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:18:17,649 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:18:17,649 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:18:17,650 INFO L82 PathProgramCache]: Analyzing trace with hash -369023626, now seen corresponding path program 1 times [2018-09-10 12:18:17,650 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:18:17,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:18:17,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:18:17,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:18:17,651 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:18:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:18:18,026 WARN L175 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:18:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:18:18,501 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:18:18,502 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:18:18,502 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:18:18,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:18:18,503 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:18:18,503 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:18:18,504 INFO L87 Difference]: Start difference. First operand 2145 states and 3126 transitions. Second operand 6 states. [2018-09-10 12:18:25,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:18:25,455 INFO L93 Difference]: Finished difference Result 7058 states and 10436 transitions. [2018-09-10 12:18:25,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:18:25,455 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 209 [2018-09-10 12:18:25,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:18:25,492 INFO L225 Difference]: With dead ends: 7058 [2018-09-10 12:18:25,492 INFO L226 Difference]: Without dead ends: 4919 [2018-09-10 12:18:25,510 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:18:25,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4919 states. [2018-09-10 12:18:25,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4919 to 4879. [2018-09-10 12:18:25,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4879 states. [2018-09-10 12:18:25,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4879 states to 4879 states and 6857 transitions. [2018-09-10 12:18:25,655 INFO L78 Accepts]: Start accepts. Automaton has 4879 states and 6857 transitions. Word has length 209 [2018-09-10 12:18:25,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:18:25,656 INFO L480 AbstractCegarLoop]: Abstraction has 4879 states and 6857 transitions. [2018-09-10 12:18:25,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:18:25,656 INFO L276 IsEmpty]: Start isEmpty. Operand 4879 states and 6857 transitions. [2018-09-10 12:18:25,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-09-10 12:18:25,659 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:18:25,660 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:18:25,660 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:18:25,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1931248990, now seen corresponding path program 1 times [2018-09-10 12:18:25,661 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:18:25,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:18:25,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:18:25,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:18:25,662 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:18:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:18:26,083 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:18:26,083 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:18:26,083 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:18:26,084 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:18:26,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:18:26,084 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:18:26,084 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:18:26,085 INFO L87 Difference]: Start difference. First operand 4879 states and 6857 transitions. Second operand 6 states. [2018-09-10 12:18:30,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:18:30,860 INFO L93 Difference]: Finished difference Result 12216 states and 17406 transitions. [2018-09-10 12:18:30,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:18:30,860 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 229 [2018-09-10 12:18:30,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:18:30,897 INFO L225 Difference]: With dead ends: 12216 [2018-09-10 12:18:30,897 INFO L226 Difference]: Without dead ends: 7343 [2018-09-10 12:18:30,928 INFO L604 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 [2018-09-10 12:18:30,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7343 states. [2018-09-10 12:18:31,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7343 to 7306. [2018-09-10 12:18:31,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7306 states. [2018-09-10 12:18:31,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7306 states to 7306 states and 9825 transitions. [2018-09-10 12:18:31,101 INFO L78 Accepts]: Start accepts. Automaton has 7306 states and 9825 transitions. Word has length 229 [2018-09-10 12:18:31,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:18:31,102 INFO L480 AbstractCegarLoop]: Abstraction has 7306 states and 9825 transitions. [2018-09-10 12:18:31,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:18:31,102 INFO L276 IsEmpty]: Start isEmpty. Operand 7306 states and 9825 transitions. [2018-09-10 12:18:31,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-09-10 12:18:31,106 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:18:31,106 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:18:31,107 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:18:31,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1802925492, now seen corresponding path program 1 times [2018-09-10 12:18:31,107 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:18:31,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:18:31,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:18:31,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:18:31,109 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:18:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:18:31,305 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-09-10 12:18:31,305 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:18:31,305 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 12:18:31,305 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:18:31,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:18:31,306 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:18:31,306 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:18:31,306 INFO L87 Difference]: Start difference. First operand 7306 states and 9825 transitions. Second operand 4 states. [2018-09-10 12:18:36,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:18:36,189 INFO L93 Difference]: Finished difference Result 18701 states and 25596 transitions. [2018-09-10 12:18:36,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:18:36,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 246 [2018-09-10 12:18:36,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:18:36,238 INFO L225 Difference]: With dead ends: 18701 [2018-09-10 12:18:36,238 INFO L226 Difference]: Without dead ends: 11401 [2018-09-10 12:18:36,273 INFO L604 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 [2018-09-10 12:18:36,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11401 states. [2018-09-10 12:18:36,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11401 to 11401. [2018-09-10 12:18:36,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11401 states. [2018-09-10 12:18:36,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11401 states to 11401 states and 14531 transitions. [2018-09-10 12:18:36,522 INFO L78 Accepts]: Start accepts. Automaton has 11401 states and 14531 transitions. Word has length 246 [2018-09-10 12:18:36,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:18:36,523 INFO L480 AbstractCegarLoop]: Abstraction has 11401 states and 14531 transitions. [2018-09-10 12:18:36,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:18:36,523 INFO L276 IsEmpty]: Start isEmpty. Operand 11401 states and 14531 transitions. [2018-09-10 12:18:36,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-09-10 12:18:36,532 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:18:36,533 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:18:36,533 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:18:36,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1558860254, now seen corresponding path program 1 times [2018-09-10 12:18:36,533 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:18:36,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:18:36,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:18:36,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:18:36,534 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:18:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:18:36,853 WARN L175 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:18:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 12:18:37,154 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:18:37,154 INFO L197 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 [2018-09-10 12:18:37,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:18:37,177 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:18:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:18:37,348 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:18:37,552 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:18:37,552 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:18:37,904 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:18:37,942 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 12:18:37,942 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2018-09-10 12:18:37,943 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:18:37,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:18:37,944 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:18:37,944 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:18:37,944 INFO L87 Difference]: Start difference. First operand 11401 states and 14531 transitions. Second operand 3 states. [2018-09-10 12:18:41,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:18:41,851 INFO L93 Difference]: Finished difference Result 25838 states and 32823 transitions. [2018-09-10 12:18:41,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:18:41,851 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 293 [2018-09-10 12:18:41,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:18:41,921 INFO L225 Difference]: With dead ends: 25838 [2018-09-10 12:18:41,921 INFO L226 Difference]: Without dead ends: 14443 [2018-09-10 12:18:41,960 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 585 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:18:41,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14443 states. [2018-09-10 12:18:42,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14443 to 14443. [2018-09-10 12:18:42,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14443 states. [2018-09-10 12:18:42,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14443 states to 14443 states and 17704 transitions. [2018-09-10 12:18:42,351 INFO L78 Accepts]: Start accepts. Automaton has 14443 states and 17704 transitions. Word has length 293 [2018-09-10 12:18:42,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:18:42,352 INFO L480 AbstractCegarLoop]: Abstraction has 14443 states and 17704 transitions. [2018-09-10 12:18:42,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:18:42,353 INFO L276 IsEmpty]: Start isEmpty. Operand 14443 states and 17704 transitions. [2018-09-10 12:18:42,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-09-10 12:18:42,372 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:18:42,373 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:18:42,373 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:18:42,374 INFO L82 PathProgramCache]: Analyzing trace with hash 946170763, now seen corresponding path program 1 times [2018-09-10 12:18:42,374 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:18:42,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:18:42,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:18:42,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:18:42,375 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:18:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:18:43,293 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 233 proven. 92 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-10 12:18:43,293 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:18:43,293 INFO L197 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 [2018-09-10 12:18:43,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:18:43,309 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:18:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:18:43,453 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:18:43,655 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 375 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-09-10 12:18:43,655 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:18:43,863 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 233 proven. 92 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-10 12:18:43,885 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:18:43,885 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:18:43,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:18:43,901 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:18:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:18:44,176 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:18:44,487 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 375 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-09-10 12:18:44,488 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:18:44,982 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 233 proven. 92 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-10 12:18:44,984 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:18:44,985 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-10 12:18:44,985 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:18:44,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:18:44,986 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:18:44,986 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:18:44,987 INFO L87 Difference]: Start difference. First operand 14443 states and 17704 transitions. Second operand 9 states. [2018-09-10 12:18:52,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:18:52,462 INFO L93 Difference]: Finished difference Result 30263 states and 38380 transitions. [2018-09-10 12:18:52,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-10 12:18:52,463 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 384 [2018-09-10 12:18:52,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:18:52,551 INFO L225 Difference]: With dead ends: 30263 [2018-09-10 12:18:52,551 INFO L226 Difference]: Without dead ends: 15826 [2018-09-10 12:18:52,598 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1556 GetRequests, 1534 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2018-09-10 12:18:52,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15826 states. [2018-09-10 12:18:52,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15826 to 15731. [2018-09-10 12:18:52,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15731 states. [2018-09-10 12:18:53,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15731 states to 15731 states and 19238 transitions. [2018-09-10 12:18:53,002 INFO L78 Accepts]: Start accepts. Automaton has 15731 states and 19238 transitions. Word has length 384 [2018-09-10 12:18:53,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:18:53,003 INFO L480 AbstractCegarLoop]: Abstraction has 15731 states and 19238 transitions. [2018-09-10 12:18:53,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:18:53,003 INFO L276 IsEmpty]: Start isEmpty. Operand 15731 states and 19238 transitions. [2018-09-10 12:18:53,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2018-09-10 12:18:53,022 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:18:53,023 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:18:53,023 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:18:53,023 INFO L82 PathProgramCache]: Analyzing trace with hash -628686525, now seen corresponding path program 1 times [2018-09-10 12:18:53,023 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:18:53,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:18:53,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:18:53,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:18:53,025 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:18:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:18:53,516 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2018-09-10 12:18:53,516 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:18:53,517 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 12:18:53,517 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:18:53,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:18:53,518 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:18:53,518 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:18:53,518 INFO L87 Difference]: Start difference. First operand 15731 states and 19238 transitions. Second operand 4 states. [2018-09-10 12:18:58,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:18:58,134 INFO L93 Difference]: Finished difference Result 46325 states and 58492 transitions. [2018-09-10 12:18:58,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:18:58,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 469 [2018-09-10 12:18:58,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:18:58,218 INFO L225 Difference]: With dead ends: 46325 [2018-09-10 12:18:58,219 INFO L226 Difference]: Without dead ends: 25081 [2018-09-10 12:18:58,359 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:18:58,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25081 states. [2018-09-10 12:18:58,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25081 to 24734. [2018-09-10 12:18:58,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24734 states. [2018-09-10 12:18:58,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24734 states to 24734 states and 27386 transitions. [2018-09-10 12:18:58,851 INFO L78 Accepts]: Start accepts. Automaton has 24734 states and 27386 transitions. Word has length 469 [2018-09-10 12:18:58,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:18:58,852 INFO L480 AbstractCegarLoop]: Abstraction has 24734 states and 27386 transitions. [2018-09-10 12:18:58,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:18:58,852 INFO L276 IsEmpty]: Start isEmpty. Operand 24734 states and 27386 transitions. [2018-09-10 12:18:58,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2018-09-10 12:18:58,960 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:18:58,961 INFO L376 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, 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, 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:18:58,961 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:18:58,962 INFO L82 PathProgramCache]: Analyzing trace with hash 458930906, now seen corresponding path program 1 times [2018-09-10 12:18:58,962 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:18:58,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:18:58,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:18:58,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:18:58,963 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:18:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:18:59,907 WARN L175 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-09-10 12:19:00,372 WARN L175 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2018-09-10 12:19:04,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1514 backedges. 609 proven. 273 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2018-09-10 12:19:04,014 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:19:04,014 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:19:04,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:19:04,021 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:19:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:19:04,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:19:05,101 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-10 12:19:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1514 backedges. 731 proven. 0 refuted. 0 times theorem prover too weak. 783 trivial. 0 not checked. [2018-09-10 12:19:06,317 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:19:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1514 backedges. 152 proven. 681 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2018-09-10 12:19:08,950 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:19:08,951 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 6] total 18 [2018-09-10 12:19:08,951 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:19:08,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:19:08,952 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:19:08,952 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-10 12:19:08,952 INFO L87 Difference]: Start difference. First operand 24734 states and 27386 transitions. Second operand 6 states. [2018-09-10 12:19:13,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:19:13,270 INFO L93 Difference]: Finished difference Result 53776 states and 59290 transitions. [2018-09-10 12:19:13,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-10 12:19:13,271 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1100 [2018-09-10 12:19:13,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:19:13,387 INFO L225 Difference]: With dead ends: 53776 [2018-09-10 12:19:13,387 INFO L226 Difference]: Without dead ends: 29048 [2018-09-10 12:19:13,482 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2215 GetRequests, 2194 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2018-09-10 12:19:13,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29048 states. [2018-09-10 12:19:13,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29048 to 28956. [2018-09-10 12:19:13,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28956 states. [2018-09-10 12:19:14,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28956 states to 28956 states and 31745 transitions. [2018-09-10 12:19:14,084 INFO L78 Accepts]: Start accepts. Automaton has 28956 states and 31745 transitions. Word has length 1100 [2018-09-10 12:19:14,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:19:14,085 INFO L480 AbstractCegarLoop]: Abstraction has 28956 states and 31745 transitions. [2018-09-10 12:19:14,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:19:14,086 INFO L276 IsEmpty]: Start isEmpty. Operand 28956 states and 31745 transitions. [2018-09-10 12:19:14,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1319 [2018-09-10 12:19:14,210 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:19:14,211 INFO L376 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, 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, 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, 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, 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:19:14,211 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:19:14,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1162410849, now seen corresponding path program 1 times [2018-09-10 12:19:14,212 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:19:14,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:19:14,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:19:14,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:19:14,213 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:19:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:19:15,013 WARN L175 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:19:16,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 206 proven. 1505 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2018-09-10 12:19:16,209 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:19:16,209 INFO L197 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 [2018-09-10 12:19:16,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:19:16,217 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:19:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:19:16,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:19:17,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 1619 proven. 2 refuted. 0 times theorem prover too weak. 783 trivial. 0 not checked. [2018-09-10 12:19:17,629 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:19:19,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 423 proven. 629 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2018-09-10 12:19:19,046 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:19:19,046 INFO L197 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 [2018-09-10 12:19:19,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:19:19,062 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:19:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:19:19,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:19:21,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 1402 proven. 2 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2018-09-10 12:19:21,040 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:19:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 208 proven. 1298 refuted. 0 times theorem prover too weak. 898 trivial. 0 not checked. [2018-09-10 12:19:22,659 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:19:22,661 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-10 12:19:22,661 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:19:22,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:19:22,663 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:19:22,663 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:19:22,664 INFO L87 Difference]: Start difference. First operand 28956 states and 31745 transitions. Second operand 9 states. [2018-09-10 12:19:27,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:19:27,883 INFO L93 Difference]: Finished difference Result 57603 states and 63290 transitions. [2018-09-10 12:19:27,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-10 12:19:27,883 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1318 [2018-09-10 12:19:27,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:19:27,967 INFO L225 Difference]: With dead ends: 57603 [2018-09-10 12:19:27,967 INFO L226 Difference]: Without dead ends: 28991 [2018-09-10 12:19:28,062 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5301 GetRequests, 5271 SyntacticMatches, 9 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2018-09-10 12:19:28,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28991 states. [2018-09-10 12:19:28,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28991 to 27950. [2018-09-10 12:19:28,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27950 states. [2018-09-10 12:19:28,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27950 states to 27950 states and 30146 transitions. [2018-09-10 12:19:28,573 INFO L78 Accepts]: Start accepts. Automaton has 27950 states and 30146 transitions. Word has length 1318 [2018-09-10 12:19:28,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:19:28,574 INFO L480 AbstractCegarLoop]: Abstraction has 27950 states and 30146 transitions. [2018-09-10 12:19:28,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:19:28,575 INFO L276 IsEmpty]: Start isEmpty. Operand 27950 states and 30146 transitions. [2018-09-10 12:19:28,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1341 [2018-09-10 12:19:28,616 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:19:28,618 INFO L376 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:19:28,618 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:19:28,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1363337045, now seen corresponding path program 1 times [2018-09-10 12:19:28,618 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:19:28,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:19:28,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:19:28,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:19:28,621 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:19:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:19:32,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 223 proven. 1564 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2018-09-10 12:19:32,569 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:19:32,569 INFO L197 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 [2018-09-10 12:19:32,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:19:32,579 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:19:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:19:32,987 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:19:34,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 1446 proven. 2 refuted. 0 times theorem prover too weak. 1020 trivial. 0 not checked. [2018-09-10 12:19:34,161 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:19:34,393 WARN L175 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 21 [2018-09-10 12:19:37,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 208 proven. 1342 refuted. 0 times theorem prover too weak. 918 trivial. 0 not checked. [2018-09-10 12:19:37,646 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:19:37,647 INFO L197 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 [2018-09-10 12:19:37,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:19:37,662 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:19:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:19:38,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:19:40,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 1683 proven. 2 refuted. 0 times theorem prover too weak. 783 trivial. 0 not checked. [2018-09-10 12:19:40,316 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:19:40,595 WARN L175 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 21 [2018-09-10 12:19:44,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 443 proven. 689 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2018-09-10 12:19:44,054 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:19:44,055 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5, 8, 5] total 24 [2018-09-10 12:19:44,056 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:19:44,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-10 12:19:44,058 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-10 12:19:44,058 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2018-09-10 12:19:44,058 INFO L87 Difference]: Start difference. First operand 27950 states and 30146 transitions. Second operand 16 states. [2018-09-10 12:19:56,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:19:56,390 INFO L93 Difference]: Finished difference Result 70505 states and 76822 transitions. [2018-09-10 12:19:56,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-10 12:19:56,390 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1340 [2018-09-10 12:19:56,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:19:56,485 INFO L225 Difference]: With dead ends: 70505 [2018-09-10 12:19:56,485 INFO L226 Difference]: Without dead ends: 42899 [2018-09-10 12:19:56,553 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5447 GetRequests, 5375 SyntacticMatches, 15 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=684, Invalid=2738, Unknown=0, NotChecked=0, Total=3422 [2018-09-10 12:19:56,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42899 states. [2018-09-10 12:19:57,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42899 to 42397. [2018-09-10 12:19:57,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42397 states. [2018-09-10 12:19:57,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42397 states to 42397 states and 45822 transitions. [2018-09-10 12:19:57,249 INFO L78 Accepts]: Start accepts. Automaton has 42397 states and 45822 transitions. Word has length 1340 [2018-09-10 12:19:57,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:19:57,251 INFO L480 AbstractCegarLoop]: Abstraction has 42397 states and 45822 transitions. [2018-09-10 12:19:57,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-10 12:19:57,251 INFO L276 IsEmpty]: Start isEmpty. Operand 42397 states and 45822 transitions. [2018-09-10 12:19:57,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1349 [2018-09-10 12:19:57,305 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:19:57,306 INFO L376 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, 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, 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, 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, 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, 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] [2018-09-10 12:19:57,306 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:19:57,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1352289339, now seen corresponding path program 1 times [2018-09-10 12:19:57,307 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:19:57,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:19:57,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:19:57,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:19:57,308 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:19:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:19:58,252 WARN L175 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-09-10 12:20:02,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 903 proven. 273 refuted. 0 times theorem prover too weak. 1316 trivial. 0 not checked. [2018-09-10 12:20:02,552 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:20:02,552 INFO L197 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 [2018-09-10 12:20:02,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:20:02,559 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:20:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:20:02,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:20:05,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 1703 proven. 6 refuted. 0 times theorem prover too weak. 783 trivial. 0 not checked. [2018-09-10 12:20:05,288 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:20:05,512 WARN L175 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 21 [2018-09-10 12:20:09,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 206 proven. 1605 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2018-09-10 12:20:09,795 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:20:09,796 INFO L197 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 [2018-09-10 12:20:09,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:20:09,812 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:20:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:20:10,751 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:20:13,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 1462 proven. 6 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2018-09-10 12:20:13,069 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:20:13,271 WARN L175 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2018-09-10 12:20:20,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 208 proven. 1603 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2018-09-10 12:20:20,795 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:20:20,796 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8, 7, 8] total 33 [2018-09-10 12:20:20,796 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:20:20,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-10 12:20:20,798 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-10 12:20:20,798 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2018-09-10 12:20:20,799 INFO L87 Difference]: Start difference. First operand 42397 states and 45822 transitions. Second operand 18 states. [2018-09-10 12:20:26,390 WARN L175 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2018-09-10 12:20:26,866 WARN L175 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-09-10 12:20:34,805 WARN L175 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2018-09-10 12:20:38,417 WARN L175 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2018-09-10 12:20:39,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:20:39,366 INFO L93 Difference]: Finished difference Result 86314 states and 93401 transitions. [2018-09-10 12:20:39,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-10 12:20:39,367 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1348 [2018-09-10 12:20:39,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:20:39,475 INFO L225 Difference]: With dead ends: 86314 [2018-09-10 12:20:39,475 INFO L226 Difference]: Without dead ends: 44601 [2018-09-10 12:20:39,576 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5464 GetRequests, 5394 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=848, Invalid=3844, Unknown=0, NotChecked=0, Total=4692 [2018-09-10 12:20:39,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44601 states. [2018-09-10 12:20:40,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44601 to 44092. [2018-09-10 12:20:40,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44092 states. [2018-09-10 12:20:40,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44092 states to 44092 states and 47539 transitions. [2018-09-10 12:20:40,213 INFO L78 Accepts]: Start accepts. Automaton has 44092 states and 47539 transitions. Word has length 1348 [2018-09-10 12:20:40,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:20:40,214 INFO L480 AbstractCegarLoop]: Abstraction has 44092 states and 47539 transitions. [2018-09-10 12:20:40,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-10 12:20:40,215 INFO L276 IsEmpty]: Start isEmpty. Operand 44092 states and 47539 transitions. [2018-09-10 12:20:40,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1524 [2018-09-10 12:20:40,271 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:20:40,272 INFO L376 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 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, 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] [2018-09-10 12:20:40,272 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:20:40,273 INFO L82 PathProgramCache]: Analyzing trace with hash -324807205, now seen corresponding path program 1 times [2018-09-10 12:20:40,273 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:20:40,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:20:40,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:20:40,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:20:40,274 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:20:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:20:41,710 WARN L175 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-10 12:20:43,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3970 backedges. 1424 proven. 41 refuted. 0 times theorem prover too weak. 2505 trivial. 0 not checked. [2018-09-10 12:20:43,418 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:20:43,418 INFO L197 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 [2018-09-10 12:20:43,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:20:43,426 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:20:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:20:43,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:20:45,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3970 backedges. 1463 proven. 2 refuted. 0 times theorem prover too weak. 2505 trivial. 0 not checked. [2018-09-10 12:20:45,586 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:20:50,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3970 backedges. 1463 proven. 2 refuted. 0 times theorem prover too weak. 2505 trivial. 0 not checked. [2018-09-10 12:20:50,140 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:20:50,140 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:20:50,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:20:50,155 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:20:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:20:51,204 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:20:52,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3970 backedges. 2690 proven. 2 refuted. 0 times theorem prover too weak. 1278 trivial. 0 not checked. [2018-09-10 12:20:52,612 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:20:52,751 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2018-09-10 12:20:54,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3970 backedges. 790 proven. 336 refuted. 0 times theorem prover too weak. 2844 trivial. 0 not checked. [2018-09-10 12:20:54,493 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:20:54,494 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 6, 5, 5] total 22 [2018-09-10 12:20:54,494 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:20:54,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-10 12:20:54,497 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-10 12:20:54,497 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2018-09-10 12:20:54,498 INFO L87 Difference]: Start difference. First operand 44092 states and 47539 transitions. Second operand 14 states. [2018-09-10 12:21:23,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:21:23,984 INFO L93 Difference]: Finished difference Result 92637 states and 100569 transitions. [2018-09-10 12:21:23,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-10 12:21:23,985 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1523 [2018-09-10 12:21:23,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:21:23,987 INFO L225 Difference]: With dead ends: 92637 [2018-09-10 12:21:23,987 INFO L226 Difference]: Without dead ends: 0 [2018-09-10 12:21:24,139 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6186 GetRequests, 6120 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=629, Invalid=3403, Unknown=0, NotChecked=0, Total=4032 [2018-09-10 12:21:24,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-10 12:21:24,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-10 12:21:24,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-10 12:21:24,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-10 12:21:24,140 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1523 [2018-09-10 12:21:24,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:21:24,140 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-10 12:21:24,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-10 12:21:24,140 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-10 12:21:24,140 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-10 12:21:24,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-10 12:21:24,261 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:21:24,314 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:21:27,113 WARN L175 SmtUtils]: Spent 2.95 s on a formula simplification. DAG size of input: 561 DAG size of output: 514 [2018-09-10 12:21:28,036 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:21:28,300 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:21:28,467 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:21:28,478 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:21:28,526 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:21:28,545 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:21:29,263 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:21:29,516 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:21:29,546 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:21:31,137 WARN L175 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 561 DAG size of output: 514 [2018-09-10 12:21:31,282 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:21:31,294 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:21:31,311 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:21:31,327 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:21:31,342 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:21:31,372 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:21:31,486 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:21:31,507 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:21:31,526 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:21:31,602 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:21:31,695 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:21:31,754 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 12:21:37,474 WARN L175 SmtUtils]: Spent 5.62 s on a formula simplification. DAG size of input: 507 DAG size of output: 60 Received shutdown request... [2018-09-10 12:21:42,636 WARN L183 SmtUtils]: Removed 17 from assertion stack [2018-09-10 12:21:42,637 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-09-10 12:21:42,638 INFO L168 Benchmark]: Toolchain (without parser) took 231266.99 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -47.3 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-09-10 12:21:42,640 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-09-10 12:21:42,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1273.65 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-09-10 12:21:42,641 INFO L168 Benchmark]: Boogie Procedure Inliner took 219.90 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-10 12:21:42,642 INFO L168 Benchmark]: Boogie Preprocessor took 477.71 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 833.6 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -972.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2018-09-10 12:21:42,643 INFO L168 Benchmark]: RCFGBuilder took 6432.82 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: 280.9 MB). Peak memory consumption was 280.9 MB. Max. memory is 7.1 GB. [2018-09-10 12:21:42,643 INFO L168 Benchmark]: TraceAbstraction took 222855.75 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 1.5 GB in the end (delta: 527.7 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-09-10 12:21:42,648 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1273.65 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 219.90 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 477.71 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 833.6 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -972.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6432.82 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: 280.9 MB). Peak memory consumption was 280.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222855.75 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 1.5 GB in the end (delta: 527.7 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 121]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 488. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem16_label21_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-21-42-660.csv Completed graceful shutdown