java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label03_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 12:23:13,440 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 12:23:13,442 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 12:23:13,454 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 12:23:13,455 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 12:23:13,456 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 12:23:13,457 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 12:23:13,459 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 12:23:13,463 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 12:23:13,467 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 12:23:13,468 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 12:23:13,468 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 12:23:13,469 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 12:23:13,472 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 12:23:13,475 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 12:23:13,479 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 12:23:13,481 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 12:23:13,487 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 12:23:13,489 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 12:23:13,491 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 12:23:13,495 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 12:23:13,496 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 12:23:13,501 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 12:23:13,502 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 12:23:13,502 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 12:23:13,506 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 12:23:13,507 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 12:23:13,508 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 12:23:13,509 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 12:23:13,510 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 12:23:13,510 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 12:23:13,515 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 12:23:13,515 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 12:23:13,516 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 12:23:13,518 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 12:23:13,519 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 12:23:13,520 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 12:23:13,550 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 12:23:13,550 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 12:23:13,551 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 12:23:13,551 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 12:23:13,552 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 12:23:13,552 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 12:23:13,552 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 12:23:13,552 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 12:23:13,553 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 12:23:13,553 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 12:23:13,553 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 12:23:13,554 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 12:23:13,554 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 12:23:13,554 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 12:23:13,555 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 12:23:13,555 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 12:23:13,555 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 12:23:13,555 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 12:23:13,556 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 12:23:13,557 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 12:23:13,557 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 12:23:13,557 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 12:23:13,557 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 12:23:13,557 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:23:13,558 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 12:23:13,558 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 12:23:13,558 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 12:23:13,558 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 12:23:13,558 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 12:23:13,559 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 12:23:13,559 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 12:23:13,559 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 12:23:13,559 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 12:23:13,619 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 12:23:13,634 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 12:23:13,640 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 12:23:13,643 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 12:23:13,643 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 12:23:13,644 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label03_true-unreach-call.c [2018-09-10 12:23:13,983 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7cf34c82/be8df096410c464fa7acd3effd808f60/FLAG9fd3eee2d [2018-09-10 12:23:14,410 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 12:23:14,410 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label03_true-unreach-call.c [2018-09-10 12:23:14,453 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7cf34c82/be8df096410c464fa7acd3effd808f60/FLAG9fd3eee2d [2018-09-10 12:23:14,474 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7cf34c82/be8df096410c464fa7acd3effd808f60 [2018-09-10 12:23:14,488 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 12:23:14,491 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 12:23:14,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 12:23:14,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 12:23:14,500 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 12:23:14,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:23:14" (1/1) ... [2018-09-10 12:23:14,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@671b07c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:14, skipping insertion in model container [2018-09-10 12:23:14,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:23:14" (1/1) ... [2018-09-10 12:23:14,820 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 12:23:15,596 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:23:15,619 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 12:23:16,076 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:23:16,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:16 WrapperNode [2018-09-10 12:23:16,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 12:23:16,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 12:23:16,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 12:23:16,355 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 12:23:16,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:16" (1/1) ... [2018-09-10 12:23:16,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:16" (1/1) ... [2018-09-10 12:23:16,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 12:23:16,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 12:23:16,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 12:23:16,660 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 12:23:17,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:16" (1/1) ... [2018-09-10 12:23:17,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:16" (1/1) ... [2018-09-10 12:23:17,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:16" (1/1) ... [2018-09-10 12:23:17,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:16" (1/1) ... [2018-09-10 12:23:17,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:16" (1/1) ... [2018-09-10 12:23:17,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:16" (1/1) ... [2018-09-10 12:23:17,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:16" (1/1) ... [2018-09-10 12:23:17,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 12:23:17,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 12:23:17,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 12:23:17,561 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 12:23:17,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:23:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 12:23:17,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 12:23:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 12:23:17,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 12:23:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 12:23:17,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 12:23:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 12:23:17,638 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 12:23:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 12:23:17,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 12:23:28,681 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 12:23:28,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:23:28 BoogieIcfgContainer [2018-09-10 12:23:28,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 12:23:28,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 12:23:28,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 12:23:28,690 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 12:23:28,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 12:23:14" (1/3) ... [2018-09-10 12:23:28,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ae866d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:23:28, skipping insertion in model container [2018-09-10 12:23:28,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:23:16" (2/3) ... [2018-09-10 12:23:28,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ae866d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:23:28, skipping insertion in model container [2018-09-10 12:23:28,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:23:28" (3/3) ... [2018-09-10 12:23:28,694 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label03_true-unreach-call.c [2018-09-10 12:23:28,701 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 12:23:28,710 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 12:23:28,768 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 12:23:28,769 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 12:23:28,769 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 12:23:28,770 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 12:23:28,770 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 12:23:28,770 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 12:23:28,770 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 12:23:28,770 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 12:23:28,771 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 12:23:28,807 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-10 12:23:28,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-10 12:23:28,820 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:23:28,821 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:23:28,822 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:23:28,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1496598220, now seen corresponding path program 1 times [2018-09-10 12:23:28,829 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:23:28,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:23:28,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:23:28,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:23:28,876 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:23:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:23:29,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:23:29,357 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:23:29,357 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 12:23:29,357 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:23:29,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:23:29,380 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:23:29,381 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:23:29,383 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-09-10 12:23:41,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:23:41,744 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-09-10 12:23:41,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:23:41,748 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-09-10 12:23:41,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:23:41,792 INFO L225 Difference]: With dead ends: 2164 [2018-09-10 12:23:41,793 INFO L226 Difference]: Without dead ends: 1554 [2018-09-10 12:23:41,805 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:23:41,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-09-10 12:23:41,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-09-10 12:23:41,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-09-10 12:23:41,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-09-10 12:23:41,945 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 56 [2018-09-10 12:23:41,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:23:41,946 INFO L480 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-09-10 12:23:41,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:23:41,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-09-10 12:23:41,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-10 12:23:41,959 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:23:41,959 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:23:41,960 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:23:41,960 INFO L82 PathProgramCache]: Analyzing trace with hash 104544154, now seen corresponding path program 1 times [2018-09-10 12:23:41,961 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:23:41,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:23:41,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:23:41,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:23:41,966 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:23:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:23:42,250 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:23:42,250 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:23:42,250 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 12:23:42,250 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:23:42,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:23:42,253 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:23:42,253 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 12:23:42,253 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-09-10 12:23:51,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:23:51,036 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-09-10 12:23:51,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:23:51,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2018-09-10 12:23:51,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:23:51,056 INFO L225 Difference]: With dead ends: 3031 [2018-09-10 12:23:51,056 INFO L226 Difference]: Without dead ends: 1985 [2018-09-10 12:23:51,061 INFO L604 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 [2018-09-10 12:23:51,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-09-10 12:23:51,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-09-10 12:23:51,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-09-10 12:23:51,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-09-10 12:23:51,146 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 128 [2018-09-10 12:23:51,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:23:51,147 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-09-10 12:23:51,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:23:51,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-09-10 12:23:51,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-09-10 12:23:51,152 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:23:51,153 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:23:51,153 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:23:51,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1018957693, now seen corresponding path program 1 times [2018-09-10 12:23:51,153 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:23:51,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:23:51,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:23:51,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:23:51,155 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:23:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:23:51,546 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:23:51,547 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:23:51,547 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:23:51,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:23:51,556 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:23:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:23:51,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:23:55,511 WARN L175 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 32 [2018-09-10 12:23:55,811 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:23:55,811 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:23:56,129 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:23:56,157 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:23:56,157 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-09-10 12:23:56,157 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:23:56,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:23:56,158 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:23:56,158 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=78, Unknown=1, NotChecked=0, Total=110 [2018-09-10 12:23:56,159 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 3 states. [2018-09-10 12:24:02,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:24:02,895 INFO L93 Difference]: Finished difference Result 5689 states and 9646 transitions. [2018-09-10 12:24:02,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:24:02,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2018-09-10 12:24:02,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:24:02,923 INFO L225 Difference]: With dead ends: 5689 [2018-09-10 12:24:02,924 INFO L226 Difference]: Without dead ends: 3736 [2018-09-10 12:24:02,937 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 258 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=31, Invalid=78, Unknown=1, NotChecked=0, Total=110 [2018-09-10 12:24:02,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2018-09-10 12:24:03,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3733. [2018-09-10 12:24:03,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3733 states. [2018-09-10 12:24:03,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 5526 transitions. [2018-09-10 12:24:03,040 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 5526 transitions. Word has length 131 [2018-09-10 12:24:03,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:24:03,041 INFO L480 AbstractCegarLoop]: Abstraction has 3733 states and 5526 transitions. [2018-09-10 12:24:03,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:24:03,041 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 5526 transitions. [2018-09-10 12:24:03,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-10 12:24:03,047 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:24:03,047 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:24:03,048 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:24:03,048 INFO L82 PathProgramCache]: Analyzing trace with hash 647189726, now seen corresponding path program 1 times [2018-09-10 12:24:03,048 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:24:03,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:24:03,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:24:03,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:24:03,050 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:24:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:24:03,338 WARN L175 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:24:03,747 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:24:03,747 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:24:03,748 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:24:03,749 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:24:03,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:24:03,750 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:24:03,750 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:24:03,750 INFO L87 Difference]: Start difference. First operand 3733 states and 5526 transitions. Second operand 6 states. [2018-09-10 12:24:09,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:24:09,485 INFO L93 Difference]: Finished difference Result 9322 states and 13893 transitions. [2018-09-10 12:24:09,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:24:09,489 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-09-10 12:24:09,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:24:09,522 INFO L225 Difference]: With dead ends: 9322 [2018-09-10 12:24:09,523 INFO L226 Difference]: Without dead ends: 5595 [2018-09-10 12:24:09,541 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:24:09,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5595 states. [2018-09-10 12:24:09,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5595 to 5553. [2018-09-10 12:24:09,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5553 states. [2018-09-10 12:24:09,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5553 states to 5553 states and 7221 transitions. [2018-09-10 12:24:09,682 INFO L78 Accepts]: Start accepts. Automaton has 5553 states and 7221 transitions. Word has length 158 [2018-09-10 12:24:09,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:24:09,682 INFO L480 AbstractCegarLoop]: Abstraction has 5553 states and 7221 transitions. [2018-09-10 12:24:09,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:24:09,683 INFO L276 IsEmpty]: Start isEmpty. Operand 5553 states and 7221 transitions. [2018-09-10 12:24:09,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-09-10 12:24:09,690 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:24:09,690 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:24:09,690 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:24:09,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1272158000, now seen corresponding path program 1 times [2018-09-10 12:24:09,691 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:24:09,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:24:09,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:24:09,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:24:09,692 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:24:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:24:10,015 WARN L175 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:24:10,103 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 118 proven. 57 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-10 12:24:10,104 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:24:10,104 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:24:10,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:24:10,112 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:24:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:24:10,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:24:10,293 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-10 12:24:10,293 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:24:10,832 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-10 12:24:10,866 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 12:24:10,866 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-10 12:24:10,866 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:24:10,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:24:10,867 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:24:10,868 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:24:10,868 INFO L87 Difference]: Start difference. First operand 5553 states and 7221 transitions. Second operand 3 states. [2018-09-10 12:24:16,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:24:16,659 INFO L93 Difference]: Finished difference Result 11100 states and 14462 transitions. [2018-09-10 12:24:16,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:24:16,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 228 [2018-09-10 12:24:16,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:24:16,793 INFO L225 Difference]: With dead ends: 11100 [2018-09-10 12:24:16,793 INFO L226 Difference]: Without dead ends: 5553 [2018-09-10 12:24:16,815 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 456 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:24:16,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5553 states. [2018-09-10 12:24:16,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5553 to 5553. [2018-09-10 12:24:16,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5553 states. [2018-09-10 12:24:16,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5553 states to 5553 states and 6881 transitions. [2018-09-10 12:24:16,936 INFO L78 Accepts]: Start accepts. Automaton has 5553 states and 6881 transitions. Word has length 228 [2018-09-10 12:24:16,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:24:16,937 INFO L480 AbstractCegarLoop]: Abstraction has 5553 states and 6881 transitions. [2018-09-10 12:24:16,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:24:16,937 INFO L276 IsEmpty]: Start isEmpty. Operand 5553 states and 6881 transitions. [2018-09-10 12:24:16,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-09-10 12:24:16,942 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:24:16,943 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:24:16,943 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:24:16,943 INFO L82 PathProgramCache]: Analyzing trace with hash 940185557, now seen corresponding path program 1 times [2018-09-10 12:24:16,943 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:24:16,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:24:16,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:24:16,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:24:16,945 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:24:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:24:17,644 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 101 proven. 4 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-09-10 12:24:17,644 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:24:17,645 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:24:17,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:24:17,661 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:24:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:24:17,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:24:18,248 WARN L175 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 6 [2018-09-10 12:24:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-09-10 12:24:18,291 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:24:18,513 WARN L175 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-09-10 12:24:18,924 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 98 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:24:18,959 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:24:18,960 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-09-10 12:24:18,960 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:24:18,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:24:18,961 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:24:18,961 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:24:18,962 INFO L87 Difference]: Start difference. First operand 5553 states and 6881 transitions. Second operand 5 states. [2018-09-10 12:24:32,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:24:32,886 INFO L93 Difference]: Finished difference Result 13866 states and 16954 transitions. [2018-09-10 12:24:32,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:24:32,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 238 [2018-09-10 12:24:32,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:24:32,921 INFO L225 Difference]: With dead ends: 13866 [2018-09-10 12:24:32,921 INFO L226 Difference]: Without dead ends: 7881 [2018-09-10 12:24:32,942 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-09-10 12:24:32,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7881 states. [2018-09-10 12:24:33,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7881 to 7415. [2018-09-10 12:24:33,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7415 states. [2018-09-10 12:24:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7415 states to 7415 states and 8927 transitions. [2018-09-10 12:24:33,116 INFO L78 Accepts]: Start accepts. Automaton has 7415 states and 8927 transitions. Word has length 238 [2018-09-10 12:24:33,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:24:33,117 INFO L480 AbstractCegarLoop]: Abstraction has 7415 states and 8927 transitions. [2018-09-10 12:24:33,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:24:33,117 INFO L276 IsEmpty]: Start isEmpty. Operand 7415 states and 8927 transitions. [2018-09-10 12:24:33,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-09-10 12:24:33,127 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:24:33,128 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:24:33,128 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:24:33,128 INFO L82 PathProgramCache]: Analyzing trace with hash -357514242, now seen corresponding path program 1 times [2018-09-10 12:24:33,128 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:24:33,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:24:33,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:24:33,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:24:33,130 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:24:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:24:34,106 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 157 proven. 205 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-10 12:24:34,106 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:24:34,107 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:24:34,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:24:34,120 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:24:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:24:34,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:24:34,731 WARN L175 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-09-10 12:24:34,924 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 246 proven. 2 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-09-10 12:24:34,924 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:24:40,932 WARN L175 SmtUtils]: Spent 966.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 25 [2018-09-10 12:24:41,395 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 157 proven. 213 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:24:41,417 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:24:41,417 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-09-10 12:24:41,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:24:41,436 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:24:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:24:41,708 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:24:41,888 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 246 proven. 2 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-09-10 12:24:41,888 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:24:42,859 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 157 proven. 213 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:24:42,863 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:24:42,863 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8, 7, 8] total 15 [2018-09-10 12:24:42,864 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:24:42,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-10 12:24:42,865 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-10 12:24:42,865 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=147, Unknown=1, NotChecked=0, Total=210 [2018-09-10 12:24:42,865 INFO L87 Difference]: Start difference. First operand 7415 states and 8927 transitions. Second operand 10 states. [2018-09-10 12:25:07,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:25:07,488 INFO L93 Difference]: Finished difference Result 35010 states and 45320 transitions. [2018-09-10 12:25:07,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-10 12:25:07,489 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 300 [2018-09-10 12:25:07,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:25:07,574 INFO L225 Difference]: With dead ends: 35010 [2018-09-10 12:25:07,574 INFO L226 Difference]: Without dead ends: 27601 [2018-09-10 12:25:07,611 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1233 GetRequests, 1200 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=227, Invalid=528, Unknown=1, NotChecked=0, Total=756 [2018-09-10 12:25:07,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27601 states. [2018-09-10 12:25:08,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27601 to 26597. [2018-09-10 12:25:08,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26597 states. [2018-09-10 12:25:08,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26597 states to 26597 states and 32433 transitions. [2018-09-10 12:25:08,182 INFO L78 Accepts]: Start accepts. Automaton has 26597 states and 32433 transitions. Word has length 300 [2018-09-10 12:25:08,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:25:08,182 INFO L480 AbstractCegarLoop]: Abstraction has 26597 states and 32433 transitions. [2018-09-10 12:25:08,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-10 12:25:08,183 INFO L276 IsEmpty]: Start isEmpty. Operand 26597 states and 32433 transitions. [2018-09-10 12:25:08,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-09-10 12:25:08,195 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:25:08,195 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-10 12:25:08,196 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:25:08,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1102381058, now seen corresponding path program 1 times [2018-09-10 12:25:08,196 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:25:08,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:25:08,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:25:08,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:25:08,197 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:25:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:25:08,481 WARN L175 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-09-10 12:25:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-10 12:25:08,853 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:25:08,853 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 12:25:08,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:25:08,867 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:25:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:25:08,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:25:09,278 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-10 12:25:09,278 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:25:09,580 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-10 12:25:09,601 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:25:09,601 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:25:09,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:25:09,620 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:25:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:25:09,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:25:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-10 12:25:10,051 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:25:10,211 WARN L175 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-10 12:25:10,704 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-10 12:25:10,707 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:25:10,708 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 9 [2018-09-10 12:25:10,708 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:25:10,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-10 12:25:10,709 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-10 12:25:10,709 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:25:10,710 INFO L87 Difference]: Start difference. First operand 26597 states and 32433 transitions. Second operand 7 states. [2018-09-10 12:25:29,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:25:29,406 INFO L93 Difference]: Finished difference Result 71858 states and 91706 transitions. [2018-09-10 12:25:29,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-10 12:25:29,406 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 303 [2018-09-10 12:25:29,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:25:29,591 INFO L225 Difference]: With dead ends: 71858 [2018-09-10 12:25:29,591 INFO L226 Difference]: Without dead ends: 44391 [2018-09-10 12:25:29,688 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1228 GetRequests, 1211 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-09-10 12:25:29,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44391 states. [2018-09-10 12:25:30,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44391 to 42381. [2018-09-10 12:25:30,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42381 states. [2018-09-10 12:25:30,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42381 states to 42381 states and 53124 transitions. [2018-09-10 12:25:30,661 INFO L78 Accepts]: Start accepts. Automaton has 42381 states and 53124 transitions. Word has length 303 [2018-09-10 12:25:30,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:25:30,663 INFO L480 AbstractCegarLoop]: Abstraction has 42381 states and 53124 transitions. [2018-09-10 12:25:30,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-10 12:25:30,663 INFO L276 IsEmpty]: Start isEmpty. Operand 42381 states and 53124 transitions. [2018-09-10 12:25:30,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-09-10 12:25:30,678 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:25:30,678 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-10 12:25:30,679 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:25:30,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1469398586, now seen corresponding path program 1 times [2018-09-10 12:25:30,679 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:25:30,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:25:30,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:25:30,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:25:30,683 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:25:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:25:31,304 WARN L175 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-09-10 12:25:31,679 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 151 proven. 17 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-09-10 12:25:31,679 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:25:31,679 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:25:31,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:25:31,687 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:25:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:25:31,798 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:25:31,904 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-09-10 12:25:31,905 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:25:32,062 WARN L175 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-09-10 12:25:32,465 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 225 proven. 71 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-10 12:25:32,487 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:25:32,488 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:25:32,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:25:32,505 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:25:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:25:32,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:25:33,196 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 242 proven. 2 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-09-10 12:25:33,196 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:25:33,378 WARN L175 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-09-10 12:25:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 155 proven. 134 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-10 12:25:33,775 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:25:33,776 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5, 5, 5] total 18 [2018-09-10 12:25:33,776 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:25:33,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-10 12:25:33,777 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-10 12:25:33,777 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2018-09-10 12:25:33,778 INFO L87 Difference]: Start difference. First operand 42381 states and 53124 transitions. Second operand 12 states. [2018-09-10 12:26:05,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:26:05,001 INFO L93 Difference]: Finished difference Result 106292 states and 136055 transitions. [2018-09-10 12:26:05,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-10 12:26:05,002 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 313 [2018-09-10 12:26:05,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:26:05,152 INFO L225 Difference]: With dead ends: 106292 [2018-09-10 12:26:05,152 INFO L226 Difference]: Without dead ends: 45085 [2018-09-10 12:26:05,362 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1314 GetRequests, 1258 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=587, Invalid=2493, Unknown=0, NotChecked=0, Total=3080 [2018-09-10 12:26:05,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45085 states. [2018-09-10 12:26:06,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45085 to 39759. [2018-09-10 12:26:06,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39759 states. [2018-09-10 12:26:06,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39759 states to 39759 states and 48346 transitions. [2018-09-10 12:26:06,082 INFO L78 Accepts]: Start accepts. Automaton has 39759 states and 48346 transitions. Word has length 313 [2018-09-10 12:26:06,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:26:06,082 INFO L480 AbstractCegarLoop]: Abstraction has 39759 states and 48346 transitions. [2018-09-10 12:26:06,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-10 12:26:06,082 INFO L276 IsEmpty]: Start isEmpty. Operand 39759 states and 48346 transitions. [2018-09-10 12:26:06,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-09-10 12:26:06,091 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:26:06,092 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:26:06,092 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:26:06,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1634677840, now seen corresponding path program 1 times [2018-09-10 12:26:06,092 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:26:06,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:26:06,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:26:06,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:26:06,094 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:26:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:26:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 159 proven. 225 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:26:06,721 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:26:06,721 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 12:26:06,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:26:06,729 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:26:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:26:06,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:26:07,474 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 284 proven. 55 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-09-10 12:26:07,475 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:26:07,640 WARN L175 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-09-10 12:26:08,389 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 12:26:08,433 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 18 [2018-09-10 12:26:09,586 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 153 proven. 231 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:26:09,608 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:26:09,608 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-09-10 12:26:09,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:26:09,625 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:26:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:26:09,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:26:10,212 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 337 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-09-10 12:26:10,212 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:26:10,360 WARN L175 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-09-10 12:26:19,178 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 12:26:19,841 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 153 proven. 231 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:26:19,843 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:26:19,844 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9, 8, 8] total 32 [2018-09-10 12:26:19,844 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:26:19,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-10 12:26:19,845 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-10 12:26:19,845 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=858, Unknown=4, NotChecked=0, Total=992 [2018-09-10 12:26:19,845 INFO L87 Difference]: Start difference. First operand 39759 states and 48346 transitions. Second operand 17 states. [2018-09-10 12:26:29,951 WARN L175 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2018-09-10 12:26:42,970 WARN L175 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2018-09-10 12:26:53,825 WARN L175 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2018-09-10 12:26:58,335 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2018-09-10 12:26:59,203 WARN L175 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-09-10 12:27:11,169 WARN L175 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 Received shutdown request... [2018-09-10 12:27:13,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-09-10 12:27:13,710 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:27:13,717 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:27:13,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:27:13 BoogieIcfgContainer [2018-09-10 12:27:13,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:27:13,718 INFO L168 Benchmark]: Toolchain (without parser) took 239229.86 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 364.1 MB. Max. memory is 7.1 GB. [2018-09-10 12:27:13,720 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 12:27:13,720 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1861.36 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: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-09-10 12:27:13,721 INFO L168 Benchmark]: Boogie Procedure Inliner took 305.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-10 12:27:13,723 INFO L168 Benchmark]: Boogie Preprocessor took 900.57 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 859.3 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. [2018-09-10 12:27:13,724 INFO L168 Benchmark]: RCFGBuilder took 11121.57 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 500.7 MB). Peak memory consumption was 500.7 MB. Max. memory is 7.1 GB. [2018-09-10 12:27:13,724 INFO L168 Benchmark]: TraceAbstraction took 225034.13 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 3.2 GB in the end (delta: -1.5 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 12:27:13,730 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1861.36 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: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 305.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 900.57 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 859.3 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11121.57 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 500.7 MB). Peak memory consumption was 500.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225034.13 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 3.2 GB in the end (delta: -1.5 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 155]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 155). Cancelled while BasicCegarLoop was constructing difference of abstraction (39759states) and FLOYD_HOARE automaton (currently 123 states, 17 states before enhancement), while ReachableStatesComputation was computing reachable states (88853 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 224.9s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 182.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3447 SDtfs, 42014 SDslu, 4726 SDs, 0 SdLazy, 58415 SolverSat, 13370 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 153.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6583 GetRequests, 6271 SyntacticMatches, 29 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8707 ImplicationChecksByTransitivity, 35.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42381occurred in iteration=8, 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: 3.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 9379 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 35.0s InterpolantComputationTime, 5277 NumberOfCodeBlocks, 5277 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 8336 ConstructedInterpolants, 429 QuantifiedInterpolants, 14156843 SizeOfPredicates, 32 NumberOfNonLiveVariables, 5479 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 32 InterpolantComputations, 7 PerfectInterpolantSequences, 7004/8841 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/Problem17_label03_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-27-13-747.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label03_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-27-13-747.csv Completed graceful shutdown