java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label36_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:33:45,487 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:33:45,489 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:33:45,507 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:33:45,508 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:33:45,509 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:33:45,511 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:33:45,512 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:33:45,515 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:33:45,521 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:33:45,522 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:33:45,526 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:33:45,527 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:33:45,528 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:33:45,529 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:33:45,530 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:33:45,531 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:33:45,536 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:33:45,541 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:33:45,543 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:33:45,544 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:33:45,547 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:33:45,551 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:33:45,551 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:33:45,551 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:33:45,552 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:33:45,553 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:33:45,554 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:33:45,554 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:33:45,555 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:33:45,555 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:33:45,556 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:33:45,556 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:33:45,556 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:33:45,557 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:33:45,558 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:33:45,558 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 12:33:45,584 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:33:45,585 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:33:45,586 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:33:45,586 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:33:45,586 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:33:45,586 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:33:45,587 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:33:45,587 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:33:45,587 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:33:45,587 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:33:45,588 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:33:45,589 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:33:45,589 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:33:45,589 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:33:45,590 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:33:45,590 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:33:45,590 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:33:45,591 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:33:45,591 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:33:45,591 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:33:45,591 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:33:45,591 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:33:45,592 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:33:45,592 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:33:45,592 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:33:45,594 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:33:45,594 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:33:45,594 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:33:45,594 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:33:45,595 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:33:45,595 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:33:45,595 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:33:45,595 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:33:45,661 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:33:45,678 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:33:45,683 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:33:45,685 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:33:45,686 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:33:45,686 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label36_false-unreach-call.c [2018-07-24 12:33:46,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6e5fc416/a860fd20537c4edf8126ad32811de535/FLAG7cac2f0a2 [2018-07-24 12:33:46,502 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:33:46,503 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label36_false-unreach-call.c [2018-07-24 12:33:46,536 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6e5fc416/a860fd20537c4edf8126ad32811de535/FLAG7cac2f0a2 [2018-07-24 12:33:46,558 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6e5fc416/a860fd20537c4edf8126ad32811de535 [2018-07-24 12:33:46,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:33:46,574 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:33:46,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:33:46,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:33:46,581 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:33:46,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:33:46" (1/1) ... [2018-07-24 12:33:46,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39d541b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:33:46, skipping insertion in model container [2018-07-24 12:33:46,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:33:46" (1/1) ... [2018-07-24 12:33:46,893 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:33:47,694 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:33:47,711 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:33:48,312 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:33:48,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:33:48 WrapperNode [2018-07-24 12:33:48,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:33:48,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:33:48,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:33:48,464 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:33:48,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:33:48" (1/1) ... [2018-07-24 12:33:48,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:33:48" (1/1) ... [2018-07-24 12:33:48,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:33:48,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:33:48,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:33:48,640 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:33:49,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:33:48" (1/1) ... [2018-07-24 12:33:49,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:33:48" (1/1) ... [2018-07-24 12:33:49,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:33:48" (1/1) ... [2018-07-24 12:33:49,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:33:48" (1/1) ... [2018-07-24 12:33:49,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:33:48" (1/1) ... [2018-07-24 12:33:49,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:33:48" (1/1) ... [2018-07-24 12:33:49,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:33:48" (1/1) ... [2018-07-24 12:33:49,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:33:49,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:33:49,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:33:49,248 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:33:49,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:33:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:33:49,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:33:49,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:33:49,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:33:49,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:33:49,316 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:33:49,316 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:33:49,316 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:33:49,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:33:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 12:33:49,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 12:33:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:33:49,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:33:57,232 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:33:57,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:33:57 BoogieIcfgContainer [2018-07-24 12:33:57,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:33:57,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:33:57,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:33:57,239 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:33:57,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:33:46" (1/3) ... [2018-07-24 12:33:57,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9a5491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:33:57, skipping insertion in model container [2018-07-24 12:33:57,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:33:48" (2/3) ... [2018-07-24 12:33:57,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9a5491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:33:57, skipping insertion in model container [2018-07-24 12:33:57,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:33:57" (3/3) ... [2018-07-24 12:33:57,243 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label36_false-unreach-call.c [2018-07-24 12:33:57,253 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:33:57,267 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:33:57,345 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:33:57,346 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:33:57,346 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:33:57,346 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:33:57,346 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:33:57,346 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:33:57,347 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:33:57,347 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:33:57,347 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:33:57,390 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-07-24 12:33:57,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-07-24 12:33:57,398 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:33:57,399 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:33:57,400 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:33:57,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1524512980, now seen corresponding path program 1 times [2018-07-24 12:33:57,409 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:33:57,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:57,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:33:57,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:33:57,461 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:33:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:33:57,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:33:57,868 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:33:57,868 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:33:57,869 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:33:57,875 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:33:57,891 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:33:57,892 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:33:57,895 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-07-24 12:34:08,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:34:08,686 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-07-24 12:34:08,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:34:08,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-07-24 12:34:08,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:34:08,729 INFO L225 Difference]: With dead ends: 2974 [2018-07-24 12:34:08,729 INFO L226 Difference]: Without dead ends: 2193 [2018-07-24 12:34:08,740 INFO L573 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 [2018-07-24 12:34:08,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-07-24 12:34:08,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2018-07-24 12:34:08,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-07-24 12:34:08,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3677 transitions. [2018-07-24 12:34:08,920 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3677 transitions. Word has length 34 [2018-07-24 12:34:08,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:34:08,920 INFO L471 AbstractCegarLoop]: Abstraction has 2193 states and 3677 transitions. [2018-07-24 12:34:08,920 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:34:08,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3677 transitions. [2018-07-24 12:34:08,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-24 12:34:08,937 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:34:08,938 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:34:08,938 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:34:08,939 INFO L82 PathProgramCache]: Analyzing trace with hash -968296830, now seen corresponding path program 1 times [2018-07-24 12:34:08,940 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:34:08,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:08,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:08,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:08,941 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:34:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:09,204 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:34:09,204 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:34:09,204 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 12:34:09,205 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:34:09,206 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:34:09,207 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:34:09,207 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 12:34:09,207 INFO L87 Difference]: Start difference. First operand 2193 states and 3677 transitions. Second operand 5 states. [2018-07-24 12:34:18,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:34:18,839 INFO L93 Difference]: Finished difference Result 6600 states and 11248 transitions. [2018-07-24 12:34:18,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:34:18,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2018-07-24 12:34:18,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:34:18,878 INFO L225 Difference]: With dead ends: 6600 [2018-07-24 12:34:18,878 INFO L226 Difference]: Without dead ends: 4413 [2018-07-24 12:34:18,887 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:34:18,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-07-24 12:34:19,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4378. [2018-07-24 12:34:19,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2018-07-24 12:34:19,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6986 transitions. [2018-07-24 12:34:19,070 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6986 transitions. Word has length 104 [2018-07-24 12:34:19,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:34:19,071 INFO L471 AbstractCegarLoop]: Abstraction has 4378 states and 6986 transitions. [2018-07-24 12:34:19,071 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:34:19,072 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6986 transitions. [2018-07-24 12:34:19,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-24 12:34:19,085 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:34:19,085 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:34:19,085 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:34:19,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1955877923, now seen corresponding path program 1 times [2018-07-24 12:34:19,086 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:34:19,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:19,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:19,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:19,088 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:34:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:19,501 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:34:19,502 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:34:19,502 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:34:19,502 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:34:19,503 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:34:19,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:34:19,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:34:19,504 INFO L87 Difference]: Start difference. First operand 4378 states and 6986 transitions. Second operand 6 states. [2018-07-24 12:34:25,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:34:25,120 INFO L93 Difference]: Finished difference Result 11002 states and 17598 transitions. [2018-07-24 12:34:25,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:34:25,121 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-07-24 12:34:25,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:34:25,159 INFO L225 Difference]: With dead ends: 11002 [2018-07-24 12:34:25,160 INFO L226 Difference]: Without dead ends: 6630 [2018-07-24 12:34:25,176 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:34:25,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2018-07-24 12:34:25,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6590. [2018-07-24 12:34:25,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-07-24 12:34:25,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 9022 transitions. [2018-07-24 12:34:25,350 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 9022 transitions. Word has length 131 [2018-07-24 12:34:25,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:34:25,351 INFO L471 AbstractCegarLoop]: Abstraction has 6590 states and 9022 transitions. [2018-07-24 12:34:25,351 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:34:25,351 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 9022 transitions. [2018-07-24 12:34:25,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-07-24 12:34:25,357 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:34:25,357 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:34:25,358 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:34:25,358 INFO L82 PathProgramCache]: Analyzing trace with hash 45045597, now seen corresponding path program 1 times [2018-07-24 12:34:25,358 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:34:25,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:25,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:25,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:25,359 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:34:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 33 proven. 86 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:34:25,690 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:34:25,691 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:34:25,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:25,799 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:34:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:25,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:34:26,123 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 12:34:26,124 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:34:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 12:34:26,418 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:34:26,418 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-07-24 12:34:26,418 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:34:26,419 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:34:26,422 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:34:26,422 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:34:26,422 INFO L87 Difference]: Start difference. First operand 6590 states and 9022 transitions. Second operand 3 states. [2018-07-24 12:34:31,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:34:31,943 INFO L93 Difference]: Finished difference Result 19582 states and 27376 transitions. [2018-07-24 12:34:31,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:34:31,944 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2018-07-24 12:34:31,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:34:32,028 INFO L225 Difference]: With dead ends: 19582 [2018-07-24 12:34:32,031 INFO L226 Difference]: Without dead ends: 12998 [2018-07-24 12:34:32,067 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 423 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:34:32,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12998 states. [2018-07-24 12:34:32,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12998 to 12998. [2018-07-24 12:34:32,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12998 states. [2018-07-24 12:34:32,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12998 states to 12998 states and 16981 transitions. [2018-07-24 12:34:32,380 INFO L78 Accepts]: Start accepts. Automaton has 12998 states and 16981 transitions. Word has length 211 [2018-07-24 12:34:32,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:34:32,381 INFO L471 AbstractCegarLoop]: Abstraction has 12998 states and 16981 transitions. [2018-07-24 12:34:32,381 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:34:32,381 INFO L276 IsEmpty]: Start isEmpty. Operand 12998 states and 16981 transitions. [2018-07-24 12:34:32,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-24 12:34:32,389 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:34:32,389 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:34:32,389 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:34:32,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1027197680, now seen corresponding path program 1 times [2018-07-24 12:34:32,390 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:34:32,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:32,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:32,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:32,391 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:34:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:32,978 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:34:32,978 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:34:32,979 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:34:32,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:32,996 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:34:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:33,147 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:34:33,617 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:34:33,618 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:34:33,981 WARN L169 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2018-07-24 12:34:34,140 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:34:34,183 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:34:34,183 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 12:34:34,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:34,218 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:34:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:34,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:34:34,684 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:34:34,684 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:34:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 159 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:34:35,063 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:34:35,063 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-07-24 12:34:35,064 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:34:35,065 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:34:35,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:34:35,065 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-07-24 12:34:35,065 INFO L87 Difference]: Start difference. First operand 12998 states and 16981 transitions. Second operand 9 states. [2018-07-24 12:34:45,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:34:45,495 INFO L93 Difference]: Finished difference Result 30708 states and 40755 transitions. [2018-07-24 12:34:45,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 12:34:45,501 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 250 [2018-07-24 12:34:45,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:34:45,567 INFO L225 Difference]: With dead ends: 30708 [2018-07-24 12:34:45,567 INFO L226 Difference]: Without dead ends: 17716 [2018-07-24 12:34:45,611 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1015 GetRequests, 993 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2018-07-24 12:34:45,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17716 states. [2018-07-24 12:34:45,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17716 to 17603. [2018-07-24 12:34:45,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17603 states. [2018-07-24 12:34:45,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17603 states to 17603 states and 21695 transitions. [2018-07-24 12:34:45,956 INFO L78 Accepts]: Start accepts. Automaton has 17603 states and 21695 transitions. Word has length 250 [2018-07-24 12:34:45,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:34:45,956 INFO L471 AbstractCegarLoop]: Abstraction has 17603 states and 21695 transitions. [2018-07-24 12:34:45,956 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:34:45,956 INFO L276 IsEmpty]: Start isEmpty. Operand 17603 states and 21695 transitions. [2018-07-24 12:34:45,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-07-24 12:34:45,965 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:34:45,966 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:34:45,966 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:34:45,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1755816693, now seen corresponding path program 1 times [2018-07-24 12:34:45,966 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:34:45,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:45,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:45,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:34:45,968 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:34:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:46,529 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 158 proven. 73 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-07-24 12:34:46,530 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:34:46,530 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 12:34:46,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:46,543 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:34:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:46,647 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:34:46,852 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 281 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-07-24 12:34:46,853 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:34:47,000 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 158 proven. 73 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-07-24 12:34:47,021 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:34:47,021 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:34:47,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:34:47,038 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:34:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:34:47,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:34:47,301 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 281 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-07-24 12:34:47,301 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:34:47,443 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 158 proven. 73 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-07-24 12:34:47,445 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:34:47,445 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 12:34:47,445 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:34:47,446 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:34:47,447 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:34:47,447 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:34:47,447 INFO L87 Difference]: Start difference. First operand 17603 states and 21695 transitions. Second operand 9 states. [2018-07-24 12:35:02,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:35:02,785 INFO L93 Difference]: Finished difference Result 51410 states and 67456 transitions. [2018-07-24 12:35:02,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-24 12:35:02,785 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 313 [2018-07-24 12:35:02,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:35:02,948 INFO L225 Difference]: With dead ends: 51410 [2018-07-24 12:35:02,949 INFO L226 Difference]: Without dead ends: 33799 [2018-07-24 12:35:03,042 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1274 GetRequests, 1253 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-07-24 12:35:03,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33799 states. [2018-07-24 12:35:03,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33799 to 33705. [2018-07-24 12:35:03,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33705 states. [2018-07-24 12:35:03,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33705 states to 33705 states and 41067 transitions. [2018-07-24 12:35:03,799 INFO L78 Accepts]: Start accepts. Automaton has 33705 states and 41067 transitions. Word has length 313 [2018-07-24 12:35:03,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:35:03,799 INFO L471 AbstractCegarLoop]: Abstraction has 33705 states and 41067 transitions. [2018-07-24 12:35:03,800 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:35:03,800 INFO L276 IsEmpty]: Start isEmpty. Operand 33705 states and 41067 transitions. [2018-07-24 12:35:03,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-07-24 12:35:03,815 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:35:03,816 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:35:03,816 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:35:03,816 INFO L82 PathProgramCache]: Analyzing trace with hash -76355566, now seen corresponding path program 1 times [2018-07-24 12:35:03,816 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:35:03,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:03,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:03,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:03,817 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:35:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:04,265 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 12:35:04,580 WARN L169 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-07-24 12:35:05,041 WARN L169 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-07-24 12:35:05,673 WARN L169 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-07-24 12:35:06,446 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 182 proven. 106 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-07-24 12:35:06,446 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:35:06,446 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:35:06,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:06,456 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:35:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:06,584 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:35:06,907 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-07-24 12:35:06,907 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:35:07,132 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-07-24 12:35:07,153 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:35:07,154 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [12] total 14 [2018-07-24 12:35:07,154 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:35:07,154 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:35:07,154 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:35:07,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-07-24 12:35:07,155 INFO L87 Difference]: Start difference. First operand 33705 states and 41067 transitions. Second operand 3 states. [2018-07-24 12:35:12,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:35:12,520 INFO L93 Difference]: Finished difference Result 90027 states and 113202 transitions. [2018-07-24 12:35:12,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:35:12,521 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 390 [2018-07-24 12:35:12,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:35:12,751 INFO L225 Difference]: With dead ends: 90027 [2018-07-24 12:35:12,751 INFO L226 Difference]: Without dead ends: 56350 [2018-07-24 12:35:12,898 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 791 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-07-24 12:35:12,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56350 states. [2018-07-24 12:35:14,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56350 to 56350. [2018-07-24 12:35:14,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56350 states. [2018-07-24 12:35:14,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56350 states to 56350 states and 68085 transitions. [2018-07-24 12:35:14,447 INFO L78 Accepts]: Start accepts. Automaton has 56350 states and 68085 transitions. Word has length 390 [2018-07-24 12:35:14,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:35:14,448 INFO L471 AbstractCegarLoop]: Abstraction has 56350 states and 68085 transitions. [2018-07-24 12:35:14,448 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:35:14,448 INFO L276 IsEmpty]: Start isEmpty. Operand 56350 states and 68085 transitions. [2018-07-24 12:35:14,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2018-07-24 12:35:14,476 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:35:14,476 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:35:14,476 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:35:14,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1868519659, now seen corresponding path program 1 times [2018-07-24 12:35:14,477 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:35:14,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:14,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:14,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:14,478 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:35:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:14,798 WARN L169 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 12:35:15,235 WARN L169 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-07-24 12:35:15,663 WARN L169 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-07-24 12:35:16,222 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 214 proven. 194 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2018-07-24 12:35:16,222 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:35:16,222 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:35:16,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:16,230 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:35:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:16,375 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:35:16,605 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 559 proven. 2 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-07-24 12:35:16,605 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:35:16,857 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 301 proven. 90 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2018-07-24 12:35:16,879 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:35:16,879 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:35:16,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:16,896 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:35:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:17,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:35:17,335 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 559 proven. 2 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-07-24 12:35:17,335 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:35:17,814 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 301 proven. 90 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2018-07-24 12:35:17,816 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:35:17,817 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 5, 5] total 24 [2018-07-24 12:35:17,817 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:35:17,818 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-24 12:35:17,818 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-24 12:35:17,818 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2018-07-24 12:35:17,818 INFO L87 Difference]: Start difference. First operand 56350 states and 68085 transitions. Second operand 15 states. [2018-07-24 12:35:43,739 WARN L169 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-07-24 12:35:44,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:35:44,398 INFO L93 Difference]: Finished difference Result 130855 states and 162074 transitions. [2018-07-24 12:35:44,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-24 12:35:44,399 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 439 [2018-07-24 12:35:44,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:35:44,571 INFO L225 Difference]: With dead ends: 130855 [2018-07-24 12:35:44,571 INFO L226 Difference]: Without dead ends: 71529 [2018-07-24 12:35:44,712 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1825 GetRequests, 1766 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=621, Invalid=3039, Unknown=0, NotChecked=0, Total=3660 [2018-07-24 12:35:44,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71529 states. [2018-07-24 12:35:45,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71529 to 68994. [2018-07-24 12:35:45,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68994 states. [2018-07-24 12:35:45,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68994 states to 68994 states and 78431 transitions. [2018-07-24 12:35:45,699 INFO L78 Accepts]: Start accepts. Automaton has 68994 states and 78431 transitions. Word has length 439 [2018-07-24 12:35:45,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:35:45,699 INFO L471 AbstractCegarLoop]: Abstraction has 68994 states and 78431 transitions. [2018-07-24 12:35:45,699 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-24 12:35:45,699 INFO L276 IsEmpty]: Start isEmpty. Operand 68994 states and 78431 transitions. [2018-07-24 12:35:45,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2018-07-24 12:35:45,737 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:35:45,738 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 12:35:45,738 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:35:45,739 INFO L82 PathProgramCache]: Analyzing trace with hash 550945246, now seen corresponding path program 1 times [2018-07-24 12:35:45,739 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:35:45,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:45,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:45,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:45,740 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:35:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:46,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1011 backedges. 179 proven. 529 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2018-07-24 12:35:46,409 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:35:46,410 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:35:46,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:46,419 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:35:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:46,592 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:35:46,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1011 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 864 trivial. 0 not checked. [2018-07-24 12:35:46,885 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:35:47,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1011 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 864 trivial. 0 not checked. [2018-07-24 12:35:47,057 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:35:47,057 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 11 [2018-07-24 12:35:47,057 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:35:47,058 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:35:47,058 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:35:47,058 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:35:47,058 INFO L87 Difference]: Start difference. First operand 68994 states and 78431 transitions. Second operand 3 states. [2018-07-24 12:35:51,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:35:51,286 INFO L93 Difference]: Finished difference Result 132129 states and 150283 transitions. [2018-07-24 12:35:51,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:35:51,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 534 [2018-07-24 12:35:51,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:35:51,432 INFO L225 Difference]: With dead ends: 132129 [2018-07-24 12:35:51,433 INFO L226 Difference]: Without dead ends: 64628 [2018-07-24 12:35:51,586 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1083 GetRequests, 1070 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:35:51,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64628 states. [2018-07-24 12:35:52,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64628 to 64372. [2018-07-24 12:35:52,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64372 states. [2018-07-24 12:35:52,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64372 states to 64372 states and 70525 transitions. [2018-07-24 12:35:52,574 INFO L78 Accepts]: Start accepts. Automaton has 64372 states and 70525 transitions. Word has length 534 [2018-07-24 12:35:52,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:35:52,575 INFO L471 AbstractCegarLoop]: Abstraction has 64372 states and 70525 transitions. [2018-07-24 12:35:52,575 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:35:52,578 INFO L276 IsEmpty]: Start isEmpty. Operand 64372 states and 70525 transitions. [2018-07-24 12:35:52,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2018-07-24 12:35:52,624 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:35:52,625 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:35:52,625 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:35:52,626 INFO L82 PathProgramCache]: Analyzing trace with hash -603302961, now seen corresponding path program 1 times [2018-07-24 12:35:52,626 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:35:52,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:52,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:52,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:35:52,627 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:35:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:53,341 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 207 proven. 194 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-07-24 12:35:53,342 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:35:53,342 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:35:53,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:53,350 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:35:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:53,525 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:35:54,953 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 492 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-07-24 12:35:54,953 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:35:55,857 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 207 proven. 194 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-07-24 12:35:55,879 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:35:55,880 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 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 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:35:55,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:35:55,896 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:35:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:35:56,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:35:56,438 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 492 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-07-24 12:35:56,439 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:35:56,720 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 207 proven. 194 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-07-24 12:35:56,722 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:35:56,723 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 12:35:56,723 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:35:56,724 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:35:56,724 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:35:56,725 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:35:56,725 INFO L87 Difference]: Start difference. First operand 64372 states and 70525 transitions. Second operand 9 states. [2018-07-24 12:36:10,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:36:10,506 INFO L93 Difference]: Finished difference Result 212316 states and 252700 transitions. [2018-07-24 12:36:10,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-24 12:36:10,506 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 563 [2018-07-24 12:36:10,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:36:11,060 INFO L225 Difference]: With dead ends: 212316 [2018-07-24 12:36:11,060 INFO L226 Difference]: Without dead ends: 143063 [2018-07-24 12:36:11,299 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2274 GetRequests, 2253 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-07-24 12:36:11,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143063 states. [2018-07-24 12:36:13,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143063 to 141551. [2018-07-24 12:36:13,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141551 states. [2018-07-24 12:36:14,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141551 states to 141551 states and 165881 transitions. [2018-07-24 12:36:14,348 INFO L78 Accepts]: Start accepts. Automaton has 141551 states and 165881 transitions. Word has length 563 [2018-07-24 12:36:14,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:36:14,349 INFO L471 AbstractCegarLoop]: Abstraction has 141551 states and 165881 transitions. [2018-07-24 12:36:14,349 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:36:14,349 INFO L276 IsEmpty]: Start isEmpty. Operand 141551 states and 165881 transitions. [2018-07-24 12:36:14,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2018-07-24 12:36:14,390 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:36:14,391 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:36:14,391 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:36:14,391 INFO L82 PathProgramCache]: Analyzing trace with hash -287789213, now seen corresponding path program 1 times [2018-07-24 12:36:14,392 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:36:14,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:36:14,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:36:14,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:36:14,392 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:36:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:36:14,947 WARN L169 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-07-24 12:36:16,123 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 505 proven. 205 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-07-24 12:36:16,123 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:36:16,123 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:36:16,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:36:16,131 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:36:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:36:16,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:36:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 507 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-07-24 12:36:16,637 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:36:17,035 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 507 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-07-24 12:36:17,057 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:36:17,057 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 14 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 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:36:17,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:36:17,072 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:36:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:36:17,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:36:18,385 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 507 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-07-24 12:36:18,385 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:36:18,869 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 507 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-07-24 12:36:18,871 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:36:18,872 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 16 [2018-07-24 12:36:18,872 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:36:18,875 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 12:36:18,875 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 12:36:18,875 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-07-24 12:36:18,876 INFO L87 Difference]: Start difference. First operand 141551 states and 165881 transitions. Second operand 14 states. [2018-07-24 12:36:44,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:36:44,453 INFO L93 Difference]: Finished difference Result 291840 states and 354901 transitions. [2018-07-24 12:36:44,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-24 12:36:44,453 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 737 [2018-07-24 12:36:44,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:36:45,642 INFO L225 Difference]: With dead ends: 291840 [2018-07-24 12:36:45,642 INFO L226 Difference]: Without dead ends: 164587 [2018-07-24 12:36:45,916 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3035 GetRequests, 2976 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=633, Invalid=2229, Unknown=0, NotChecked=0, Total=2862 [2018-07-24 12:36:46,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164587 states. [2018-07-24 12:36:47,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164587 to 163766. [2018-07-24 12:36:47,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163766 states. [2018-07-24 12:36:49,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163766 states to 163766 states and 191457 transitions. [2018-07-24 12:36:49,169 INFO L78 Accepts]: Start accepts. Automaton has 163766 states and 191457 transitions. Word has length 737 [2018-07-24 12:36:49,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:36:49,170 INFO L471 AbstractCegarLoop]: Abstraction has 163766 states and 191457 transitions. [2018-07-24 12:36:49,170 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 12:36:49,170 INFO L276 IsEmpty]: Start isEmpty. Operand 163766 states and 191457 transitions. [2018-07-24 12:36:49,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2018-07-24 12:36:49,191 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:36:49,192 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:36:49,192 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:36:49,192 INFO L82 PathProgramCache]: Analyzing trace with hash -2050636028, now seen corresponding path program 1 times [2018-07-24 12:36:49,192 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:36:49,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:36:49,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:36:49,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:36:49,193 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:36:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:36:49,729 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2018-07-24 12:36:49,729 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:36:49,729 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:36:49,730 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:36:49,730 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:36:49,730 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:36:49,730 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:36:49,731 INFO L87 Difference]: Start difference. First operand 163766 states and 191457 transitions. Second operand 4 states. [2018-07-24 12:37:00,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:37:00,603 INFO L93 Difference]: Finished difference Result 334999 states and 395939 transitions. [2018-07-24 12:37:00,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:37:00,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 740 [2018-07-24 12:37:00,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:37:01,102 INFO L225 Difference]: With dead ends: 334999 [2018-07-24 12:37:01,102 INFO L226 Difference]: Without dead ends: 169871 [2018-07-24 12:37:01,503 INFO L573 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 [2018-07-24 12:37:01,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169871 states. [2018-07-24 12:37:03,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169871 to 169138. [2018-07-24 12:37:03,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169138 states. [2018-07-24 12:37:04,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169138 states to 169138 states and 197410 transitions. [2018-07-24 12:37:04,565 INFO L78 Accepts]: Start accepts. Automaton has 169138 states and 197410 transitions. Word has length 740 [2018-07-24 12:37:04,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:37:04,566 INFO L471 AbstractCegarLoop]: Abstraction has 169138 states and 197410 transitions. [2018-07-24 12:37:04,566 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:37:04,566 INFO L276 IsEmpty]: Start isEmpty. Operand 169138 states and 197410 transitions. [2018-07-24 12:37:04,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1005 [2018-07-24 12:37:04,738 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:37:04,739 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:37:04,739 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:37:04,739 INFO L82 PathProgramCache]: Analyzing trace with hash -2107546126, now seen corresponding path program 1 times [2018-07-24 12:37:04,739 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:37:04,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:37:04,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:37:04,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:37:04,740 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:37:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:37:05,576 WARN L169 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-07-24 12:37:05,793 WARN L169 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 7 [2018-07-24 12:37:07,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 238 proven. 973 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 12:37:07,939 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:37:07,939 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:37:07,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:37:07,947 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:37:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:37:08,269 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:37:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 601 proven. 0 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2018-07-24 12:37:09,225 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:37:10,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 135 proven. 558 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2018-07-24 12:37:10,217 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:37:10,217 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [22, 6] total 27 [2018-07-24 12:37:10,217 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:37:10,218 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:37:10,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:37:10,219 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2018-07-24 12:37:10,219 INFO L87 Difference]: Start difference. First operand 169138 states and 197410 transitions. Second operand 5 states. [2018-07-24 12:37:17,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:37:17,647 INFO L93 Difference]: Finished difference Result 332720 states and 389152 transitions. [2018-07-24 12:37:17,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:37:17,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1004 [2018-07-24 12:37:17,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:37:18,135 INFO L225 Difference]: With dead ends: 332720 [2018-07-24 12:37:18,135 INFO L226 Difference]: Without dead ends: 165040 [2018-07-24 12:37:18,512 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2033 GetRequests, 2000 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2018-07-24 12:37:18,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165040 states. [2018-07-24 12:37:20,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165040 to 165034. [2018-07-24 12:37:20,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165034 states. [2018-07-24 12:37:21,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165034 states to 165034 states and 190017 transitions. [2018-07-24 12:37:21,398 INFO L78 Accepts]: Start accepts. Automaton has 165034 states and 190017 transitions. Word has length 1004 [2018-07-24 12:37:21,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:37:21,398 INFO L471 AbstractCegarLoop]: Abstraction has 165034 states and 190017 transitions. [2018-07-24 12:37:21,399 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:37:21,399 INFO L276 IsEmpty]: Start isEmpty. Operand 165034 states and 190017 transitions. [2018-07-24 12:37:21,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1045 [2018-07-24 12:37:21,484 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:37:21,485 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:37:21,485 INFO L414 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:37:21,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1766764900, now seen corresponding path program 1 times [2018-07-24 12:37:21,486 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:37:21,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:37:21,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:37:21,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:37:21,487 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:37:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:37:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1063 backedges. 730 proven. 2 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-07-24 12:37:23,640 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:37:23,640 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:37:23,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:37:23,652 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:37:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:37:23,959 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:37:25,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1063 backedges. 377 proven. 0 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2018-07-24 12:37:25,169 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:37:26,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1063 backedges. 108 proven. 338 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2018-07-24 12:37:26,574 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:37:26,575 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 12:37:26,575 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:37:26,576 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:37:26,576 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:37:26,576 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:37:26,576 INFO L87 Difference]: Start difference. First operand 165034 states and 190017 transitions. Second operand 5 states. Received shutdown request... [2018-07-24 12:37:32,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:37:32,382 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:37:32,387 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:37:32,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:37:32 BoogieIcfgContainer [2018-07-24 12:37:32,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:37:32,389 INFO L168 Benchmark]: Toolchain (without parser) took 225818.20 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 266.5 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-07-24 12:37:32,390 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. [2018-07-24 12:37:32,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1888.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 182.3 MB). Peak memory consumption was 182.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:37:32,391 INFO L168 Benchmark]: Boogie Procedure Inliner took 175.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-24 12:37:32,391 INFO L168 Benchmark]: Boogie Preprocessor took 606.95 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 870.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2018-07-24 12:37:32,392 INFO L168 Benchmark]: RCFGBuilder took 7986.50 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 546.4 MB). Peak memory consumption was 546.4 MB. Max. memory is 7.1 GB. [2018-07-24 12:37:32,393 INFO L168 Benchmark]: TraceAbstraction took 215152.71 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 1.8 GB in the beginning and 1.2 GB in the end (delta: 603.5 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-07-24 12:37:32,397 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 1888.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 182.3 MB). Peak memory consumption was 182.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 175.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 606.95 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 870.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7986.50 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 546.4 MB). Peak memory consumption was 546.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215152.71 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 1.8 GB in the beginning and 1.2 GB in the end (delta: 603.5 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 90). Cancelled while BasicCegarLoop was constructing difference of abstraction (165034states) and interpolant automaton (currently 8 states, 5 states before enhancement), while ReachableStatesComputation was computing reachable states (265348 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 215.0s OverallTime, 14 OverallIterations, 6 TraceHistogramMax, 162.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4741 SDtfs, 49906 SDslu, 3349 SDs, 0 SdLazy, 102875 SolverSat, 16109 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 116.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15890 GetRequests, 15609 SyntacticMatches, 28 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2329 ImplicationChecksByTransitivity, 13.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169138occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 17.6s AutomataMinimizationTime, 13 MinimizatonAttempts, 6145 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 3.6s SatisfiabilityAnalysisTime, 23.5s InterpolantComputationTime, 14281 NumberOfCodeBlocks, 14281 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 22024 ConstructedInterpolants, 0 QuantifiedInterpolants, 38848215 SizeOfPredicates, 12 NumberOfNonLiveVariables, 11523 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 44 InterpolantComputations, 12 PerfectInterpolantSequences, 20334/24336 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label36_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-37-32-411.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label36_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-37-32-411.csv Completed graceful shutdown